Managing Access to Existing Data when Upgrading to LTO- …docshare01.docshare.tips/files/296/2969516.pdf · 2016. 7. 12. · HP Omniback II Legato NetWorker Yosemite TapeWare Windows

whitepaper

Managing Access to Existing Data when Upgrading to LTO-

Ultrium Tape Format

Contents Background 1111 Benefits of Migrating to Ultrium Benefits of Migrating to Ultrium Benefits of Migrating to Ultrium Benefits of Migrating to Ultrium 1111 Migrating Data to the Ultrium Format 2222 Option 1 Option 1 Option 1 Option 1 ---- HP Library & Tape Tools 2.7 Media Migration Utility HP Library & Tape Tools 2.7 Media Migration Utility HP Library & Tape Tools 2.7 Media Migration Utility HP Library & Tape Tools 2.7 Media Migration Utility 4444 Installation of HP Library & Tape Tools v2.7 Installation of HP Library & Tape Tools v2.7 Installation of HP Library & Tape Tools v2.7 Installation of HP Library & Tape Tools v2.7 4444 installation from h installation from h installation from h installation from hp.comp.comp.comp.com 5555 installation from SureStore CD installation from SureStore CD installation from SureStore CD installation from SureStore CD----ROMROMROMROM 5555 Data Migration from DLTtape Format to LTO Data Migration from DLTtape Format to LTO Data Migration from DLTtape Format to LTO Data Migration from DLTtape Format to LTO----Ultrium FormatUltrium FormatUltrium FormatUltrium Format 5555 time and cost time and cost time and cost time and cost 7777 recommendations recommendations recommendations recommendations 7777 Option 2 Option 2 Option 2 Option 2 –––– Commercial Data Conversion Programs Commercial Data Conversion Programs Commercial Data Conversion Programs Commercial Data Conversion Programs 7777 recommendations recommendations recommendations recommendations 8888 Option 3 Option 3 Option 3 Option 3 –––– T T T Tape to Disk to Tapeape to Disk to Tapeape to Disk to Tapeape to Disk to Tape 8888 recommendations recommendations recommendations recommendations 8888 Option 4 Option 4 Option 4 Option 4 –––– Recommended Bureau Service Recommended Bureau Service Recommended Bureau Service Recommended Bureau Service –––– Vogon International Vogon International Vogon International Vogon International 9999 recommendations recommendations recommendations recommendations 9999 Option 5 Option 5 Option 5 Option 5 –––– Other Bureau Services Other Bureau Services Other Bureau Services Other Bureau Services 9999 recommendations recommendations recommendations recommendations 9999 Option 6 Option 6 Option 6 Option 6 –––– Operate a Mixed Media Library Operate a Mixed Media Library Operate a Mixed Media Library Operate a Mixed Media Library 10101010 pe pe pe performing the upgraderforming the upgraderforming the upgraderforming the upgrade 10101010 recommendations recommendations recommendations recommendations 11111111 Option 7 Option 7 Option 7 Option 7 –––– Retain Legacy Tape Drives to Read Legacy Data Cartridges Retain Legacy Tape Drives to Read Legacy Data Cartridges Retain Legacy Tape Drives to Read Legacy Data Cartridges Retain Legacy Tape Drives to Read Legacy Data Cartridges 12121212 recommendations recommendations recommendations recommendations 12121212 Option 8 Option 8 Option 8 Option 8 –––– Move to a SAN Topology Move to a SAN Topology Move to a SAN Topology Move to a SAN Topology 12121212 recommendations recommendations recommendations recommendations 13131313 Upgrading Existing HP Tape Automation Hardware 14141414 Can I upgrade my HP Racked Tape Storage? Can I upgrade my HP Racked Tape Storage? Can I upgrade my HP Racked Tape Storage? Can I upgrade my HP Racked Tape Storage? 14141414 Can I upgrade my HP Racked Tape Storage? Can I upgrade my HP Racked Tape Storage? Can I upgrade my HP Racked Tape Storage? Can I upgrade my HP Racked Tape Storage? 14141414 Can I Upgrade my HP Tape Automation Product? Can I Upgrade my HP Tape Automation Product? Can I Upgrade my HP Tape Automation Product? Can I Upgrade my HP Tape Automation Product? 14141414 Performing the Upgrade Performing the Upgrade Performing the Upgrade Performing the Upgrade 15151515 If You Have a HP SureStore 1/9 Autoloader If You Have a HP SureStore 1/9 Autoloader If You Have a HP SureStore 1/9 Autoloader If You Have a HP SureStore 1/9 Autoloader 16161616 If You H If You H If You H If You Have a HP SureStore x/40, x/60, x/80, x/100, x/120 or x/140 Tape Libraryave a HP SureStore x/40, x/60, x/80, x/100, x/120 or x/140 Tape Libraryave a HP SureStore x/40, x/60, x/80, x/100, x/120 or x/140 Tape Libraryave a HP SureStore x/40, x/60, x/80, x/100, x/120 or x/140 Tape Library 17171717 If You Have a HP SureStore E x/40, x/60, x/100, x/120 or x/140 Tape Library If You Have a HP SureStore E x/40, x/60, x/100, x/120 or x/140 Tape Library If You Have a HP SureStore E x/40, x/60, x/100, x/120 or x/140 Tape Library If You Have a HP SureStore E x/40, x/60, x/100, x/120 or x/140 Tape Library 18181818 If You Have a HP SureStore E x/180 or x/700 Tape Library If You Have a HP SureStore E x/180 or x/700 Tape Library If You Have a HP SureStore E x/180 or x/700 Tape Library If You Have a HP SureStore E x/180 or x/700 Tape Library 19191919 Case Study 1 Case Study 1 Case Study 1 Case Study 1 –––– Tape Format Tape Format Tape Format Tape Format Conversion Using A Bureau ServiceConversion Using A Bureau ServiceConversion Using A Bureau ServiceConversion Using A Bureau Service 20202020 Case Study 2 Case Study 2 Case Study 2 Case Study 2 –––– DIY Migration with HP L&TT DIY Migration with HP L&TT DIY Migration with HP L&TT DIY Migration with HP L&TT 21212121 Case Study 3 Case Study 3 Case Study 3 Case Study 3 –––– Operating a Mixed Media Format Library Operating a Mixed Media Format Library Operating a Mixed Media Format Library Operating a Mixed Media Format Library 22222222 In Conclusion 24242424

May 2001 page 1

Background

This whitepaper is a guide to the steps needed to upgrade from your existing tape device to a higher performance LTO-Ultrium tape format device. The whitepaper concentrates on upgrading from DLTtape format devices to LTO-Ultrium format devices. However, much of the content is applicable to users planning to migrate from other tape formats (Exabyte Mammoth, Sony AIT, SLR, DDS, etc.) Migrating to the LTO-Ultrium tape format involves two components. The first is dealing with the existing media pool and determining how data in it will be accessed. The second is the actual hardware upgrade. Benefits of Migrating to Ultrium The advantages for organizations of migrating to and standardizing on the Ultrium tape format are covered in many publications from HP and others. For this reason they are only briefly covered here:

• = Performance – 200GB(1) capacity and 30MB/sec(1) data throughput make LTO-Ultrium the highest performance computer tape drive.

• = Open standard – Products (drives, libraries and media) available from multiple vendors giving the widest product range of any tape format.

• = Consolidation – The wide product range means that a single tape format can be used from the data center to the desktop with obvious benefits in media interchangeability and manageability.

• = Commitments – HP, IBM, Seagate (and 25 other storage vendors) endorse the Ultrium format and promise a doubling of capacity and throughput each 2 years.

HP Whitepaper - Managing Access to Existing Data when Upgrading to LTO-Ultrium Tape Format

May 2001 page 2

Migrating Data to the Ultrium Format

This section of the whitepaper covers managing access to data that is stored on the existing DLTtape format (or other tape format) data cartridges and when wanted how to migrate this data onto LTO-Ultrium format data cartridges.

The decision on managing access to data on existing data cartridges should be based on: • = How regularly does the data need to be accessed? • = When data is accessed what is the maximum time that can pass from request to data being

available?• = How long must backup / archive be kept for legal or commercial reasons?• = What resources are available to manage the media pool and/or perform a data migration.

The options are shown in Figure 1 below and guidelines for choosing each option in Table 1 below.

Figure 1 - The decision on how to manage data on existing DLTtape format data cartridges should depend upon the organisation's requirements for that data.


May 2001 page 3

Table 1 - Recommended data management and conversion methods for different situations.

OptionOptionOptionOption

IT IT IT IT resource resource resource resource neededneededneededneeded(1)(1)(1)(1)

external external external external costcostcostcost(1)(1)(1)(1) Recommended WhenRecommended WhenRecommended WhenRecommended When

1 - HP Library & Tape Tools Utility high none

Data on a small number of DLTtape data cartridges needs to be converted to Ultrium format. IT Resources are available to perform the data conversion.

2 – Commercial data conversion program high low

Data on a small number of non-DLTtape data cartridges needs to be converted to Ultrium format. IT Resources are available to perform the data conversion.

3 - Write to disk and read back

very high none

There is a large amount of free disk capacity. Many backup data cartridges are consolidated onto fewer Ultrium data cartridges. IT Resources are available to perform the data conversion.

4 - Vogon International Bureau Service very low high

Many DLTtape (or other format) data cartridges need to be converted to Ultrium format. A rapid conversion is required. No IT Resources are available to perform the data conversion.

5 - Other bureau services very low very high Not recommended. 6 - Mixed tape format library

medium medium A staged upgrade from DLT tape devices to Ultrium tape devices is being implimented.

7 - Maintain a legacy DLT drive at each site low low

Data on DLTtape (or other format) data cartridges will be accessed infrequently and has a limited archive life (< 1 year). IT Resources are available on site to perform data recovery from legacy media

8 – Access data on DLTtape data cartridges through a SAN.

very low low

A SAN is implemented to manage backup operations and data storage. The upgrade includes LTO-Ultrium tape devices or tape libraries. Data on DLTtape data cartridges will not be converted to LTO-Ultrium format, it is accessed by adding legacy DLTtape format device to the SAN.

(1) These are the resources and costs to manage the data conversion or implement access to data on the legacy tape format.


May 2001 page 4

Option 1 - HP Library & Tape Tools 2.7 Media Migration Utility HP Library and Tape Tools (L&TT) is a diagnostic, troubleshooting and management program written for users of HP tape devices, tape automation products, optical automation products and some FC to SCSI bridges. It is a compact program, available as a free self-extracting download from HP’s web site. More information is available at:

http://www.hp.com/support/tapetools

A feature introduced in HP L&TT v2.6, is a utility to migrate media formats. This has been written to allow easy translation of data on DLT data cartridges to LTO-Ultrium data cartridges. Key features of this utility are:

• = Currently only supports DLTtape to LTO-Ultrium format conversion. • = All leading backup software applications supported (see table below). • = Converts data on single data cartridge to data on another data cartridge. (Appending

of subsequent backups is possible.) • = Target media takes the backup application’s label from source media. • = HP L&TT 2.6 runs on Windows NT 4.0, 2000, 98 and ME.

The currently supported applications are shown in the table below. These are all tested applications. It is likely that data written using other applications will also be successfully migrated, however, the user prior to starting the format conversion process should test these cases.

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Table 2 - Data written by most popular backup applications has been tested to successfully convert from DLTtape (all formats) data cartridges to LTO-Ultrium data cartridges.

Installation of HP Library & Tape Tools v2.7 If you already have HP L&TT v2.7 or HP L&TT v2.6 on your computer ignore this section and go to the section on performing the data migration. If you have an earlier version of HP L&TT, it is recommended that you uninstall it, then install version 2.7 downloaded from hp.com. HP L&TT can be installed via a download from www.hp.com/ or from the HP SureStore CD-ROM that ships with HP tape devices and tape libraries. The following assumes that the host computer is running Windows NT4.0/2000/98 and meets the minimum system requirements for HP L&TT.


May 2001 page 5

installation from hp.com • = Locate the HP L&TT download page on hp.com. From the home page, enter the Support

section, select the “tape backup” link, choose the “hp ultrium tape drives” link, select your product link, then select “drivers and downloads” from this page. Alternatively, type “Library & Tape Tools” into the site search engine. The necessary page should appear on the first page of results.

• = At the downloads page select “HP Library and Tape Tools (95/98/NT/2000/ME)“. Save the program to disk”.

• = Locate the downloaded program file (ltt_eng.exe) in Windows Explorer. Double click to start the auto-extraction and run the InstallShield program. Select the location for the program files. It is worth installing all components, in total they are less than 5MB. Proceed through the windows to install the program. At the last window, there is the option to open HP L&TT.

• = You may be required to reboot to your computer to complete the installation. If the current processes on the computer mean you cannot reboot the computer refer to http://www.hp.com/support/tapetools for advice on how to avoid this requirement.

installation from SureStore CD-ROM It is recommended to download L&TT from hp.com to ensure that you get the newest version. Use the version on the SureStore CD-ROM only if you are not connected to the web. • = From the HP Ultrium SureStore CD-ROM choose your language. From the “software utilities”

select “HP Library & Tape Tools”.

• = Follow the on-screen instructions. The installation process is the same as described above for installation from a web download.

Data Migration from DLTtape Format to LTO-Ultrium Format This utility currently only works for single drives attached to the same computer. It does not support use in a tape library. A typical set up is shown in Figure 2 below. The following are prerequisites to performing the data conversion:

➼➼➼➼ A DLT (source) tape device and an Ultrium (target) tape device are attached to the host computer. These can be on the same or separate SCSI buses.

➼➼➼➼ The (source) DLT data cartridge is write protected. ➼➼➼➼ The (target) Ultrium data cartridge is blank or contains data that you can afford to lose. ➼➼➼➼ HP Library & Tape Tools v2.6 or v2.7 is installed on the computer.


May 2001 page 6

Figure 2 - HP Library and Tape Tools includes a utility to migrate data written onto DLTtape IV (DLT 40, DLT 70, DLT 80 format) data cartridges to Ultrium-1 format data cartridges.

• = If it is not already open, launch HP L&TT. Use the desktop icon or open it from the Windows start menu. It will be in the Programs group (if default location was chosen during installation). HP L&TT will automatically scan all peripheral busses when it has loaded. Ensure that the DLT and Ultrium tape devices are picked up by the scan. Figure 3 - HP L&TT Automatically scans the peripheral busses when it has loaded. The DLT and Ultrium tape drives should be detected.

• = Click on the 'Utilities' menu and then select 'Migrate Backup Media....'

• = In the Media Migration Utility window select the Source Drive and Destination Drive from the pull-down menus. Start the migration process by clicking the Start Migration button.

• = Progress will be shown in the Status field at the bottom of the window.

Figure 4 - Estimated time to complete the data migration is

shown as the job executes.


May 2001 page 7

time and cost The program is free but the operator time and new Ultrium data cartridges must be budgeted for.

The set up is relatively simple, as described above. The actual time to migrate data from the DLTtape IV data cartridges to the LTO-Ultrium data cartridges will depend upon the amount and type of data on the data cartridge, the generation of DLT data cartridge and the generation of the source DLT drive used. As a guide, the table below shows typical times to migrate data on full DLT data cartridges to LTO-Ultrium-1 data cartridges.

data cartridge / DLT drive (format)data cartridge / DLT drive (format)data cartridge / DLT drive (format)data cartridge / DLT drive (format) datdatdatdata capacitya capacitya capacitya capacity(1)(1)(1)(1) / transfer rate / transfer rate / transfer rate / transfer rate(1)(1)(1)(1) / time taken / time taken / time taken / time taken DLTtape III / DLT 20 20GB / 2.5MBps / 2.3hours2.3hours2.3hours2.3hours

DLTtape IIIXT / DLT 20XT 30GB / 2.5MBps / 2.8hours2.8hours2.8hours2.8hours DLT tapeIV / DLT 40 40GB / 3.0MBps / 3.8hours3.8hours3.8hours3.8hours DLT tapeIV / DLT 70 70GB / 10.0MBps / 2.0hours2.0hours2.0hours2.0hours DLT tapeIV / DLT 80 80GB / 12.0MBps / 1.9hours1.9hours1.9hours1.9hours

(1) Assumes 2:1 compressible data

Table 3 - The time to convert to LTO-Ultrium-1 format is determined by the read rate from the DLTtape device.

recommendations • = Consider using lower capacity LTO-Ultrium data cartridges to match the data capacity of the

source DLTtape format (or other format) data cartridges. • = Perform media migration on a computer with no other applications running. Option 2 – Commercial Data Conversion Programs Several vendors sell software to perform data conversion between tape formats. Of possible use are programs from CHI Corp, DTSNX Software, Flatironsolutions, Novastor, MDE, Overland Data and Shaftstall. Of these the most widely known is Novastor’s (www.novastor.com/) TapeCopy program. The current shipping version is TapeCopy 1.5, with TapeCopy 2.0 in beta testing. TapeCopy works through a simple graphical interface or via a command line. Novastor claims that TapeCopy 1.5 supports most tape formats. This means that using TapeCopy 1.5 will allow data to be migrated from many tape formats to LTO-Ultrium as shown in Table 4 below. TapeCopy does not deal with tape labels or attempt to interpret the tape format in any way. Labels are processed the same as any other data file. The result is a bit for bit copy of the source data cartridge to the target LTO-Ultrium data cartridge. Prerequisites are that the source and target tape devices must be attached to the same computer with a supported operating system via a SCSI or EIDE interface. Current supported operating systems are Windows 9x, Windows ME, Windows NT and Windows 2000. It is recommended that the device drivers for the tape devices are disabled before using TapeCopy because they can conflict with the device drivers in TapeCopy resulting in a failed copy. The block size for both tape devices should be set to variable. Novastor is planning to address these issues in release 2.0. Other enhancements planned for TapeCopy 2.0 are a new user interface, autoloader and library support, and an integrated Internet browser


May 2001 page 8

Compaq DDS1, DDS2, DDS3, DDS4, AIT-1, AIT-2, DLT4000, DLT7000, DLT8000 Ecrix VXA-1

Exabyte Mammoth, Mammoth 2 HP DDS1, DDS2, DDS3, DDS4, Travan, DLT 40, DLT 70, DLT 80

IBM 34xx (SCSI), 35xx (SCSI) Onstream ADR50

Quantum DLT4000, DLT7000, DLT8000 Seagate DDS1, DDS2, DDS3, DDS4, AIT-1, AIT-2, Travan NS

Sony DDS1, DDS2, DDS3, DDS4, AIT-1, AIT-2 Tandberg MLR / SLR

Tecmar Travan NS + + + many other formats

HP Ultrium 230HP Ultrium 230HP Ultrium 230HP Ultrium 230

or HP Ultrium 215HP Ultrium 215HP Ultrium 215HP Ultrium 215

Table 4 - Using a commercial data migration program such as Novastor TapeCopy allows data stored in most tape formats to be migrated to LTO-Ultrium data cartridges.

recommendations • = Consider using lower capacity Ultrium data cartridges to match the data capacity of the source

DLTtape format (or other format) data cartridges. • = Disable tape device drivers before running TapeCopy. • = Set device properties for both source and target tape devices to “variable block size”. • = Investigate other tape format conversion programs. Option 3 – Tape to Disk to Tape This option appears as the lowest cost route to migrate data between tape formats. However it can be a false economy because of the time that it takes to perform the copying and the potential for unplanned results. If, having understood these caveats, this is the chosen method of data conversion the following steps are necessary. • = Ensure that the computer that will be used has enough available disk space to store all the data

on the fullest data cartridge.

• = Plan how the data cartridges will be labeled or directories on disk will be named to identify dates of the original backups.

• = Restore all selected data from tape to disk.

• = Backup data to new LTO-Ultrium data cartridge. recommendations • = Consider the real costs, especially time, before choosing this option. • = Plan carefully how the dates of backups will be identified.


May 2001 page 9

Option 4 – Recommended Bureau Service HP has negotiated preferential rates and improved service for customers that use Vogon International’s data migration services to convert data from their existing data cartridges to LTO-Ultrium data cartridges. Vogon is a leading provider of data migration, data recovery and forensic services. There are currently offices in the UK, Germany and the USA with locations planned for Asia very soon. The preferential data migration service for HP customers gives a 15% discount off standard prices and provides the fast track service at no incremental cost. It is available to end-users, reseller and OEM customers. To take advantage of this service you need to quote the following codes when contacting Vogon International.

End Users: HP/EU/DC/500 OEM accounts: VOG/DC/400 HP Channel partners: HP/DR/600 (this will give an extra 25% discount)

The fast track service time depends on the type and quantity of work involved but is generally 50% quicker than the standard service and typically takes 2 to 3 days. The contact details for Vogon International are: UKUKUKUK Vogon-International, Talisman Business Centre, Talisman road, Bicester, Oxfordshire, OX6 OJX, England. Tel : +44 (0) 1869 355255 Fax : +44 (0) 1869 355256 GermanyGermanyGermanyGermany [email protected] Tel: +49 (0) 89 3235030 USA USA USA USA [email protected] Tel: +1 405 321 2585 website: www : vogon-international.com recommendations • = Use this option for large numbers of data cartridges. • = Use this option to reduce the number of data cartridges that you have to manage. • = Make sure that you quote the HP code numbers for the preferential service. Option 5 – Other Bureau Services Although Vogon-International is the recommended bureau service for the conversions of all tape media formats to LTO-Ultrium it is not the only company offering this service. For completeness other companies that offer this service or may offer this service are mentioned below: Ontrack Data - http://www.ontrack.com/conversion/ Duplication System Inc. - http://www.duplicationsystems.com/ Shaffstall Corporation - http://www.convertmedia.com/formats.htm tapeconversion.com - http://www.tapeconversions.com/ recommendations • = Use Vogon-International for tape data conversion services from your current tape format to LTO-

Ultrium.


May 2001 page 10

Option 6 – Operate a Mixed Media Library Operating a HP Tape Library in a mixed media configuration means that the backup administrator has the capability to backup and restore using two or more different tape formats using the same physical tape library. All the features available in a single tape format library, work in a mixed tape format library Owners of HP DLT Tape Libraries that want to increase the library’s data capacity or reduce the time taken for backup operations can upgrade the library by purchasing LTO-Ultrium tape drive modules. Depending upon the reason for the upgrade the new LTO-Ultrium tape drive modules can replace DLTtape drive modules or they can be added to the library to work alongside the DLTtape drive modules. Operating a mixed tape format tape library brings several benefits: • = Drive (and drive cost) tailored to usage - use existing DLTtape drive modules and data

cartridges for non-time critical backup and restore jobs. Use higher performance LTO-Ultrium drive modules and data cartridges for time critical backups, HSM and other near line applications.

• = Protects investment in existing hardware. • = Low disruption to current backup process. • = Facilitates data migration from DLTtape to LTO-Ultrium tape formats. All HP midrange tape libraries, except the 1/20 and 2/20, can be configured to operate in a mixed media format configuration. Currently DLT 80 and LTO-Ultrium tape formats are supported with SuperDLT supported when available. The enterprise class tape libraries, HP 10/180 and HP 20/700, can also operate in a mixed tape format configuration. Currently DLT 80, HP 9840 and LTO-Ultrium are supported with SuperDLT supported when available. All current shipping HP Tape Libraries can be configured to operate in mixed media mode as can many existing HP Tape Libraries in use. For more on this see the section below. The slot requirement for mail slots and cleaning cartridges increase with multiple tape formats in the library. For a mixed DLT 80 and LTO-Ultrium format library this would increase the slots allocated to mail slots from a minimum of 2 to 10 data cartridge slots. Note the cartridge magazines each hold 5 cartridges. Adding the slots required for cleaning cartridges this means 12 slots are now unavailable to data cartridges:

• = DLT 80 mail slots – 5 • = LTO-Ultrium mail slots – 5 • = DLT cleaning cartridge –1 • = LTO-Ultrium cleaning cartridge – 1

Different tape rotation methods may use more mail slots. Thus a mixed tape format configuration is best suited to larger tape libraries. performing the upgrade If the day to day backup operations are going to be performed using the LTO-Ultrium tape drive modules then most of the DLTtape drive modules should be replaced. One or two DLTtape drive modules would be kept to facilitate data restore from the existing pool of DLTtape data cartridges. This upgrade requires new library firmware to be loaded and the backup application to be configured to see two logical libraries.


May 2001 page 11

An alternative approach is to purchase LTO-Ultrium tape drive modules to back up new network storage while keeping the existing DLTtape drive modules to continue the current backup operations. This upgrade incurs lower hardware costs and is less disruptive to the current backup operations. This upgrade requires new library firmware to be loaded and the backup application to be configured to see two logical libraries. HP sells LTO-Ultrium tape drive upgrade kits for its upgradeable libraries. These kits come with instructions how to perform the upgrade. It is a straightforward operation for HP trained personnel or an experienced technician. The steps involved for the HP mid-range libraries include: • = Decide how to arrange the drive modules and cartridge magazines. For fastest access time

install the LTO-Ultrium tape drive modules and cartridge magazines on the lowest level of the tape library. The same type of drive module per level is highly recommended, as it will be a lot easier to keep track of your library’s configuration.

• = Use HP Library Tape Tools to upgrade the tape library firmware (Windows hosts only) because this will ensure that the library and tape drive modules both have their firmware updated. This is available at http://www.hp.com/cposupport/swindexes/hpsurestor19251_swen.html Select the Firmware Bundle for the appropriate operating system. For libraries with their Remote Management Cards, attached to UNIX hosts, the library firmware can be updated using a web browser.

• = Perform the physical upgrade. Instructions come with the new hardware.

• = Via the front panel, select at least 10 mail slots, more if the tape rotation scheme requires more data cartridges to be taken away from the tape library. Verify that there is one DLTtape magazine and one LTO-Ultrium magazine in the upper right hand drawer of the HP Tape Library.

• = Configure the backup software to view the library as two logical libraries, one with the DLTtape cartridge slots and drive modules, the other with the LTO-Ultrium cartridge slots and tape drive modules. Update the mail slot configuration.

The upgrade to mixed media configuration for the enterprise class libraries, 10/180 and 20/700, is similar. The upgrade to mixed tape format library should take under 2 hours. It is possible to perform data migration in a mixed media library. However there is no software currently available to automate the task for bulk media migration. The technique is to treat the drive modules as individual tape drives. Several companies are writing software to enable bulk media migration in a tape library. recommendations • = Use a mixed media library for a staged upgrade to higher performance backups with LTO-

Ultrium tape drive modules. • = Verify that your backup software can support a mixed media format library. • = Plan the physical layout of the library to locate the LTO-Ultrium drive modules and cartridge slots

at the bottom of the tape library for fastest file access. Allocate sufficient mail slots in the top layer of the library, in multiples of 5, for your cartridge rotation strategy.


May 2001 page 12

Option 7 – Retain Legacy Tape Drives to Read Legacy Data Cartridges This is a practical option when standalone tape devices or non-upgradeable tape libraries are replaced. Maintaining the replaced DLTtape (or other format) tape device on-line provides access to data on the legacy data cartridges. This is a low cost option that is applicable when the business requirements are that the IT department must access this data infrequently and has a reasonable lead-time to restore the data. For long term archiving where more frequent access is forecast, it may be preferable to migrate the data from the legacy data cartridges to an optical storage server. For businesses with minimal requirements to access legacy data, it is sensible to maintain at least one legacy tape device on-line to facilitate possible future requirements to restore old data or versions. recommendations • = Use this option when the business requires that there must be access to legacy data but this is

likely to be infrequent and the QOSS (quality of storage service) agreement allows enough time to locate and load data cartridges.

• = Consider an optical storage server for long term data archiving with a high requirement for user access.


May 2001 page 13

Option 8 – Move to a SAN Topology The upgrade from DLTtape format tape devices to LTO-Ultrium format tape devices may be part of a bigger change to the data storage and backup infrastructure that involves implementing a storage area network (SAN). In this case a new LTO-Ultrium tape library or LTO-Ultrium tape device and existing DLTtape library and/or DLTtape device can be part of the same shared storage pool. This has similar benefits to a mixed media format tape library because it allows a staged upgrade to the higher performance of LTO-Ultrium devices and libraries while allowing the existing DLTtape media pool to continue in operation.

Figure 5 - When a SAN is implemented an Ultrium Tape Library increases backup and data recovery performance. An existing library can be added to the SAN to allow access to data on old data cartridges.

recommendations • = When a SAN is implemented to manage data storage and access, consider upgrading to HP

Ultrium Tape Libraries for improved backup and data recovery performance. If the existing tape library or tape device is integrated into the SAN data on the existing tape cartridges can be accessed.


May 2001 page 14

Upgrading Existing HP Tape Automation Hardware

Upgrading an existing HP tape library to use LTO-Ultrium tape drive modules allows the existing library chassis and robotics to be re-used and protect the end-users’ investment. This section of the whitepaper describes how to perform the upgrade to using LTO-Ultrium tape modules. This can be a straight replacement of the existing drive modules or to build a mixed tape format library. The upgrade may be done at the same time as a data cartridge capacity (slot) increase and/or upgrade to Fibre Channel interface.

Can I upgrade my HP Racked Tape Storage? The HP Tape Array 5500 can be upgraded fully or partially to HP Ultrium 230 drive modules. Compared to DLT 80 modules this increase the maximum native backup capacity from 200GB to 500GB and the native data throughput from 105GB/hour to 264GB/hour. The HP Tape Array 5300 can be upgraded fully or partially to HP Ultrium 230 drive modules or HP Ultrium 215 drive modules. Compared to DLT 80 modules this increase the maximum native backup capacity from 80GB to 200GB and the native data throughput from 42GB/hour to 105GB/hour. The older HP Tape Array products cannot be upgraded to LTO-Ultrium. Can I Upgrade my HP Tape Automation Product? Many of the HP tape automation products can be upgraded to use Ultrium tape drive modules. These libraries will currently use DLT 80, DLT 70, DLT 40, DLT 1 or 9840 tape drives. All the currently available tape automation products are upgradable to Ultrium tape drives. Older products are not easily upgradable. Users of these older products are recommended to upgrade their automation products to new autoloaders or libraries, that incorporate Ultrium tape drives, in order to benefit from the increased performance of HP Ultrium tape drives. It is possible with the larger automation products to add Ultrium tape drives to the tape library while keeping one or more DLT or 9840 format drives. The advantages and disadvantages of upgrading to a mixed format library are discussed below. The table below shows the HP tape autoloaders and tape libraries that can be upgraded to use Ultrium tape drive modules. If your HP autoloader or library is not in this table it is not easily upgradable.

product nameproduct nameproduct nameproduct name Upgrade to Ultrium?Upgrade to Ultrium?Upgrade to Ultrium?Upgrade to Ultrium? Mixed FormatMixed FormatMixed FormatMixed Format 1-9 autoloader yes no 1/20 2/20 libraries yes no 2/40 4/40 libraries yes yes 2/60 4/60 6/60 libraries yes yes 2/100 4/100 6/100 6/120 6/140 libraries yes yes 1-10/84 1-10 /180 libraries yes yes 1-20/228 1-20/396 1-20/700 libraries yes yes

Table 5 – The HP automation products shown in this table can be upgraded to use Ultrium tape drives. The larger libraries, 40+ slots, can operate using mixed tape formats.


May 2001 page 15

Performing the Upgrade

The parts needed for an upgrade must be ordered through an HP reseller or direct from HP. The x/40, x/60 and x/140 libraries are designed to be upgradeable by users. However, experience has shown that unless the user is experienced in this operation this can be a false economy. It is recommended that a HP Customer Engineer or Certified Reseller perform the upgrade at the customer’s site. For older libraries the library firmware must be upgraded.


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If You Have a HP SureStore 1/9 Autoloader An upgrade kit (C7768A or C7768C) facilitates this upgrade. The kit includes:

• = Ultrium 230 tape drive module • = replacement removable magazine (6 slots) • = replacement fixed magazine (3 slots) • = Ultrium data cartridge • = Ultrium cleaning cartridge.

Additional 50/100GB Ultrium data cartridges (C7971A) or 100/200GB Ultrium data cartridges (C7970A) and Ultrium bar code labels (C7970B) also need to be ordered. To store data cartridges remote from the 1/9 Autoloader in the magazines, additional 6 slot magazines need to be ordered. These are available without data cartridges (C7743A) or with data cartridges (C7744R). The parts that are needed are included in the table below. Part Description Comment

C7768A HP SureStore 1/9 Autoloader HVD SCSI upgrade kit from DLTx to Ultrium 230 tape drive

Includes 1 HVD SCSI Ultrium 230 tape drive, 1 magazine, 1 data cartridge, 1 cleaning cartridge and FRU guide.

C7768C HP SureStore 1/9 Autoloader LVD SCSI upgrade kit from DLTx to Ultrium 230 tape drive

Includes 1 LVD SCSI Ultrium 230 tape drive, 1 magazine, 1 data cartridge, 1 cleaning cartridge and FRU guide.

C7743A Empty magazine for HP SureStore Ultrium 1/9 Autoloader

Empty, contains no media.

C7744R Full magazine for HP SureStore Ultrium 1/9 Autoloader

Includes 6 data cartridges.

C7971A Ultrium 100/200GB data cartridge C7970A Ultrium 50/100GB data cartridge C7979A Ultrium cleaning cartridge C7970B Ultrium bar code labels – 100 pack


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If You Have a HP SureStore x/40, x/60, x/80, x/100, x/120 or x/140 Tape Library The number of Ultrium tape drive modules (C9555A or C9555C) that you need to will depend upon the number of levels in your library and whether it will be completely upgraded or one or more existing DLTx tape drives will be maintained in the library. If existing DLT 80 tape drives are being maintained note that Ultrium and DLT 80 tape drives must not be installed on the same level (see Option 6 above). The existing DLT cartridge magazines need to be replaced with Ultrium cartridge magazines. These are available without data cartridges (C9553A) or with data cartridges (C9554A). To store data cartridges remote from the tape library in the 5 slot magazines, additional Ultrium cartridge magazines need to be ordered. Additional Ultrium data cartridges (C7971A or C7970A) and Ultrium bar code labels (C7970B) also need to be ordered. If the DLTx library has a Fibre Channel interface this also needs to be upgraded in order to benefit from the faster data throughput of the Ultrium 230 tape drive. Order part C9558A or C9558C. If the DLTx library has a SCSI interface this can be upgraded to a Fibre Channel interface by ordering the same parts. The parts that are needed are included in the table below. Part Description Comment

C9555A HP SureStore Ultrium 230 tape drive HVD SCSI

Includes pre-installed HVD SCSI Ultrium 230 tape drive in hot swap drive module, hardware and learning products.

C9555C HP SureStore Ultrium 230 tape drive LVD SCSI

Includes pre-installed LVD SCSI Ultrium 230 tape drive in hot swap drive module, hardware and learning products.

C9553A Empty magazine for HP Ultrium mid-range libraries


C9554A Full magazine for HP Ultrium mid-range libraries


C7971A Ultrium 100/200GB data cartridge C7970A Ultrium 50/100GB data cartridge C7979A Ultrium cleaning cartridge C7970B Ultrium bar code labels – 100 pack C7970C Ultrium bar code labels – 200 pack

C9560A 20 slot capacity increase for x/20 C9561A 20 slot capacity increase for x/40

Tape drive modules, FC interface and data cartridges not included.

C9558A HVD SCSI to Fibre Channel adapter kit for HVD SCSI Ultrium tape drive

C9558C LVD SCSI to Fibre Channel adapter kit for LVD SCSI Ultrium tape drive

This is to upgrade to a Fibre Channel library interface. Includes FC bridge interface card, 2 GBICs, 16m optical cable, 2 SCSI cables, 2 SCSI terminators and learning products for upgrading HVD or LVD SCSI interface to FC interface. One adapter supports one or two LTO-Ultrium tape drive modules.


May 2001 page 18

If You Have a HP SureStore E x/40, x/60, x/100, x/120 or x/140 Tape Library The number of Ultrium tape drive modules (A6306A or A6307A) that you need will depend upon the number of levels in your library and whether it will be completely upgraded or one or more existing DLTx tape drives will be maintained in the library. If existing DLT 80 tape drives are being maintained note that Ultrium and DLT 80 tape drives must not be installed on the same level (see Option 6 above). The existing DLT magazines need to be replaced with Ultrium magazines. These are available without cartridges (C9553A) or with cartridges (C9554A). To store data cartridges remote from the tape library in the 5 slot magazines, additional Ultrium magazines need to be ordered. Additional Ultrium data cartridges (C7971A or C7970A) and Ultrium bar code labels (C7970B or C7970C) also need to be ordered. If the DLTx library has a Fibre Channel interface it also needs to be upgraded in order to benefit from the faster data throughput of the Ultrium 230 tape drive. Order part A4673A or A4674A. If the DLTx library has a SCSI interface this can be upgraded to a Fibre Channel interface by ordering the same parts. The parts that are needed are included in the table below. PartPartPartPart DescriptionDescriptionDescriptionDescription CommentCommentCommentComment

A6306A HP SureStore E Ultrium tape drive HVD SCSI

Includes pre-installed HVD SCSI Ultrium 230 tape drive in hot swap drive module, HVD SCSI terminator, jumper cable, HVD SCSI cable and learning products.

A6307A HP SureStore E Ultrium tape drive LVD SCSI

Includes pre-installed LVD SCSI Ultrium 230 tape drive in hot swap drive module, LVD SCSI terminator, jumper cable, LVD SCSI cable and learning products.

C9553A Empty magazine for HP Ultrium mid-range libraries


C9554A Full magazine for HP Ultrium mid-range libraries



A6325A 20 slot capacity increase for x/20 A6326A 20 slot capacity increase for x/20

Tape drive modules, FC interface and data cartridges not included.

A4674A HVD SCSI to Fibre Channel adapter kit for HVD SCSI Ultrium tape drive

A4673A LVD SCSI to Fibre Channel adapter kit for LVD SCSI Ultrium tape drive

This is to upgrade to a Fibre Channel library interface. Includes Fibre Channel bridge interface card, 2 GBICs, 16m optical cable, 2 SCSI cables, 2 SCSI terminators and learning products for upgrading HVD or LVD SCSI interface to FC interface. One adapter supports one or two Ultrium tape drives.


May 2001 page 19

If You Have a HP SureStore E x/180 or x/700 Tape Library The number of Ultrium tape drives (A6322A or A6323A) that you need to will depend upon the tape drive capacity of your library, whether it will be fully populated and whether it will be completely upgraded or one or more existing DLTx or 9840 tape drives will be maintained in the library. The x/180 can house up to 10 Ultrium tape drives. The x/700 can house up to 20 Ultrium tape drives. The existing DLT and 9840 cartridge magazines also accommodate Ultrium cartridges. Additional Ultrium data cartridges (C7971A or C7970A) and Ultrium bar code labels (C7970B or C7970C) also need to be ordered. If the DLT 80 drives in the library have a Fibre Channel interface this also needs to be upgraded in order to benefit from the faster data throughput of the Ultrium 230 tape drive. Order part A4673A or A4674A. If the DLT 80 library has a SCSI interface this can be upgraded to a Fibre Channel interface by ordering the same parts. If the x/180 or x/700 library has HVD SCSI tape drives and the upgrade will add LVD SCSI Ultrium tape drives then a HVD SCSI to LVD SCSI converter is needed to convert the library robotics interface from HVD SCSI to LVD SCSI. The parts that are needed are included in the table below. PartPartPartPart DescriptionDescriptionDescriptionDescription CommentCommentCommentComment

A6322A HP SureStore E Ultrium tape drive LVD SCSI

For x/180 & x/700 tape libraries. Includes LVD SCSI terminator, cables and guide.

A6323A HP SureStore E Ultrium tape drive HVD SCSI

For x/180 & x/700 tape libraries. Includes HVD SCSI terminator, cables and guide.


A6324A HVD SCSI to LVD SCSI converter 1 required per library for LVD SCSI bridge support of robotics interface.

A4688A FC to SCSI Bridge - 1 FC port, 4 HVD SCSI ports

Up to 5 bridges fit in library accessory bin, rackmount. Maximum of 4 DLT 80, 3 9840 or 4 LTO-Ultrium drives per bridge.

option 001

4 pack of 2.5m SCSI cables Cables connect FC to SCSI bridge to HVD SCSI drives. Highly recommended but optional.

option 002 PDU and FC Accessories Package

Supports 1 to 5 FC to SCSI bridges (A4688A). Includes hardware for rackmount or standalone operation, 5m SCSI cable (bridge to library controller) and a power cord.

A4689A FC to SCSI Bridge - 1 FC port, 2 LVD SCSI ports

Includes rackmount hardware, 1 GBIC, fibre optic cables, serial cable and Ethernet cable. Maximum of 2 LTO-Ultrium drives per bridge.

option 001

2 pack of 2.5m SCSI cables Cables connect FC bridge to up to 2 LVD SCSI drives. Highly recommended but optional.

option 002

PDU and FC Accessories Package

Supports 1 to 10 FC to SCSI bridges (A4689A). Includes hardware for rackmount or standalone operation, 5m SCSI cable (bridge to library controller), power cord and Installation & Configuration Guide.


May 2001 page 20

Case Study 1 –Tape Format Conversion Using A Bureau Service A major telecommunications company contacted Vogon-International in December 2000 when they were caught in a tape technology trap. The problem, due to the nature of their business, was that all of their data had to be retained for many years - data that had been stored for up to 9 years. In fact, the IT department had long wanted to simplify their data archives. It was decided to migrate all the archive and business data to HP LTO-Ultrium data cartridges and to manage the media sets using Veritas NetBackup software. Their existing storage system used approximately 5,000 5GB Exabyte data cartridges to store 25TB of data. Simply getting someone to copy the data from each of these data cartridges to LTO-Ultrium data cartridges would not satisfy their requirements as they would have been unable to then access the data using the Veritas application. Also the IT department wanted to reduce the number of pieces of media it managed by taking advantage of the 100GB native capacity of the LTO-Ultrium data cartridges. A one for one copy would have ended up with 5,000 LTO-Ultrium data cartridges that were each only 5% full. Nor was it practical for them to restore each of the 5,000 tapes and then write the files to LTO-Ultrium cartridges using the Veritas software - the processing would have taken months and tied up valuable personnel and computer resources. A further problem was that the information on the data cartridges had to be held as near-line storage, and so could not be unavailable for long. The client needed the transfer to be complete, and the data back to their offices, by the time their offices opened on 6th January 2001. December 15th 2000 A sample of ten of the Exabyte data cartridges was delivered to Vogon at 08.00 and the programming commenced. The objective was to develop a program that would read the 8mm Exabyte data cartridges and write the data to disk as Veritas NBU data sets. It took 3 days to create and test the process. December 18th 2000 By 14.00 Vogon provided sample output on HP LTO-Ultrium cartridges and returned the 10 sample Exabyte data cartridges to the client’s IT department for testing. December 20th 2000 With testing successfully completed by the client, the 5,000 Exabyte 8mm data cartridges were delivered to Vogon's offices 2 days later. Having already set up 20 high performance HP NetServer computer systems, each with 5 Exabyte 8500 drives and one HP Ultrium 230 drive connected, and within excess of 200GB of disk storage, the engineers commenced work immediately. The Exabyte 5GB data cartridges took up to 3 hours to read and a LTO-Ultrium data cartridge took approximately 2 hours to fill. One LTO-Ultrium data cartridge held the contents of 40 Exabyte 5GB data cartridges. One system could process 40 x 8mm cartridges in 24 hours and transfer the data to a LTO-Ultrium data cartridge in 2 hours. Using 20 systems, the engineers were able to process 800 cartridges each 24 hours. December 28th 2000 Having worked over Christmas to meet the client's 6 January deadline and having processed all 5,000 Exabyte 5GB data cartridges, 125 LTO-Ultrium data cartridges were dispatched by special courier. The whole job was completed 9 days prior to the deadline date and at preferential rates due to the special deal for HP customers.


May 2001 page 21

Case Study 2 – DIY Migration with HP L&TT

A product design consultancy with customers in the worldwide aerospace industry upgraded to a HP Ultrium tape drive because the nightly backup was exceeding the capacity of its existing DLT data cartridges. The business is located in France and currently employs 15 engineers and 6 support staff.

One of these support staff is responsible for the computing infrastructure. She currently manages 14 HP-UX workstations running CAD and CAE applications and 11 Windows NT 4.0 PCs running Microsoft Office. She is also responsible for the printers, plotter, two HP NetServers that act as a shared file server and email server and an appliance for Internet accesses. These are connected with a 100Base-T switched Ethernet network.

As well as acting a file server, one of the HP NetServers acts as the backup server. The IT administrator uses CA ARCserve 6.61 to manage the backups and media. ARCserve agents are installed on all the HP-UX workstations. The PC users are encouraged to use keep important work on logical drives mapped onto the file server. A single tape drive is attached to the file / backup server. This has been recently upgraded to an HP Ultrium 230, external drive replacing the HP DLT 70.

The backup regime is based on the Grandfather-Father-Son media rotation scheme. A full backup is started at 20:00 each Monday to Friday. The size of the backup increased from 40GB to almost 55GB over the past 12 months despite the IT administrator asking staff to delete out of date drawings and files. The main reason that it was decided to upgrade the backup device from HP DLT 70 to HP Ultrium 230 was that the backup would no longer fit on a single data cartridge. Before the upgrade the IT administrator had to find a way of taking out the full data cartridge and putting a second data cartridge into the tape drive after about two hours (22:00). Since there was often nobody in the office at this time she had to return to work or come in early in the morning so that the backup could complete before the other staff came into work.

After the full Friday backup at the end of each 4-week month the 2 DLTtape IV data cartridges were put into the safe as the monthly backup. Next Friday 2 new data cartridges were used. At the end of each 13-month year, the 2 data cartridges were put into the safe as the yearly backup. Seven years worth of backups are held because some customers requested drawing from past projects often years after project was completed. The data cartridges for the daily backups were recycled each week. After one year (52 uses) they were replaced. The data cartridges with the monthly backups are recycled after 12 months. The yearly backups are archived.

It was decided to migrate all the backups so the DLT 70 tape device could be scrapped. The backup administrator was worried about its future reliability, after 2 years of service, and wanted to manage just one type of data cartridge. This required that 34 DLTtape IV data cartridges would have to be copied to LTO-Ultrium format.

The upgrade was planned for a holiday weekend to give three days. After the full Friday backup, HP Library and Tape Tools (L&TT) was installed onto the backup server. The HP Ultrium 230 was attached to the same SCSI bus as the DLT 70. Correct installation was verified using HP L&TT. The write protect tab was moved to the write protect position on all the DLTtape IV cartridges. Using the Migrate Media utility in HP L&TT the source (DLT) data cartridges were copied to the target (LTO-Ultrium) data cartridges.


May 2001 page 22

Before Monday lunchtime, all 34 DLT data cartridges were copied to LTO-Ultrium data cartridges. The DLT 70 tape drive was removed from the SCSI bus. One by one the newly copied LTO-Ultrium data cartridges were imported into the ARCserve 6.61 media database.

On Tuesday evening the appropriate LTO-Ultrium data cartridge was inserted into the HP Ultrium 230. The backup completed successfully on one data cartridge. This allowed 5 data cartridges to be recycled to the scratch media pool at the end of the next week because the nightly backup took just one LTO-Ultrium data cartridge instead of two DLTtape IV data cartridges.

Using HP Library and Tape Tools allowed this customer to move all its data to the LTO-Ultrium tape format from DLT quickly and cost effectively. The IT administrator sacrificed her holiday weekend but now goes home each evening without worrying about incomplete backups because of full DLT data cartridges.

Case Study 3 – Operating a Mixed Media Format Library A growing manufacturing business has protected its investment in a HP Tape Library by upgrading its capacity and configuring it to operate with DLT and LTO-Ultrium tape formats. The business now has nearly 300 people at its main office, compared to 220 a year ago. As the business and staff numbers expand so does the amount of data that the IT department has to manage and protect. Currently there are 4 application servers running under Windows 2000 for Microsoft Back Office applications and file serving and two servers running under HP-UX for ERP and Oracle databases. There is a total of 160GB on all these servers that is backed up each weekday evening. It is projected that there will be 400GB in 2 years time if the business meets its growth targets. For business and legal reasons much data has to be accessible for 3 years after it is created. Last year the IT department decided to centralize the backup process to improve management of the backup process and media. Instead of each server having a tape drive attached, a HP 1/40 DLT 80 tape library was acquired along with a HP LH4 as a backup server. HP Omniback II 3.5 is installed on the backup server to manage the backup and restores. A full backup was run each weekday night at 10.00pm. To back up the 160GB on the application servers ended up taking over 8 hours. This became unacceptable because the network was saturated with backup traffic when the early starters arrived for work at 6:00am. To reduce the backup time and to allow for future data capacity increases, the IT department has just completed an upgrade to the backup infrastructure. The 1/40 tape library was upgraded to a 3/60. Another 20 slot module was added to increase cartridge capacity and two Ultrium 230 tape modules were installed into the lower level of the library. The DLT 80 tape module was moved to the new module at the top of the library. The library firmware was upgraded to allow mixed media format operation. In order to get data off the application servers faster a dedicated Gigabit Ethernet network was installed between these and the backup server. This required installing Gigabit Ethernet NICs in each server and purchasing a Gigabit Ethernet switch. Rather than using a single very powerful backup server, it was decided to upgrade the existing dual processor HP LH4 to have a 1GB of RAM and purchase a similar specification machine for the second backup server. Each backup server was connected to an Ultrium tape drive module in the library. The DLT 80 tape module was connected to the first backup server. The new backup server also has HP Omniback II 3.5 installed on it with the database synchronized across both backup servers. The full nightly backup is now scheduled to start a 1am. Each backup


May 2001 page 23

server and Ultrium tape drive module backs up 3 application servers. The full backup now takes less than two hours and requires two Ultrium 100/200GB data cartridges. A Grandfather-Father-Son media rotation is used with the Friday backup removed from the tape library and each fourth Friday's backup archived. There are nearly 100 legacy DLTtape IV data cartridges that have to be kept for up to three years so user requests for historic data can be met. To read these, the top module of the library contains the DLT 80 tape drive module and 19 of the DLTtape IV data cartridges that contain the most frequently restored data. Mail slots are configured in the top left drawer to add DLTtapeIV data cartridges when the required data is not on a data cartridge in the library and to add/remove LTO-Ultrium data cartridges. The legacy DLTtape IV data cartridges are stored in a fireproof safe on-site. This upgrade to the backup infrastructure has allowed the IT department to reduce the backup time to less than two hours and remove backup traffic off the production network. There is capacity to protect the projected 400GB of data that will reside on the application servers in two years time. The use of the mixed media format library allows file restores in less than thirty minutes from the legacy DLTtape IV data cartridges.


May 2001 page 24

In Conclusion The launch of the HP LTO-Ultrium format tape devices and tape automation products gives IT departments the opportunity to reduce backup times, speed up data recovery and simplify media management. LTO-Ultrium is a new tape format that means that there is no read or write compatibility with any existing tape format. Therefore, when upgrading backup devices to LTO-Ultrium delivers a plan is needed to manage access to data stored on the existing tape data cartridges. As this whitepaper has illustrated, there are many ways to manage access to data stored on the existing tape data cartridges. This method chosen must be determined by the business requirements and service level agreements (SLAs) that the IT department must meet. If it is decided to migrate data from the existing tape data cartridges to LTO-Ultrium tape data cartridges several programs are available. For current DLT users there is a media migration utility in the free HP Library & Tape Tools program. For current users of formats other than DLT, commercial data migration programs are available. To migrate the data on large numbers of data cartridges it is recommended that a bureau service is used. Of the companies offering this service, HP recommends Vogon-International, who offer a preferential service and prices for HP customers. For users upgrading to LTO-Ultrium, but deciding there is no requirement to migrate data from the current tape format to LTO-Ultrium the simplest option is to maintain a ‘legacy’ tape device to read data from ‘legacy’ data cartridges. For users of HP DLT tape libraries there are many advantages to upgrading their existing hardware. As well as protecting the investment in the library chassis and robotics, it is also possible to operate a mixed (DLT and LTO-Ultrium) tape format library. There are many advantages to a mixed tape format but you must ensure that your backup software supports this configuration. As the case studies in this whitepaper illustrate the way to manage the access to data on the old tape format depends upon the business needs. Whatever the business situation, the benefits of upgrading tape format to LTO-Ultrium far outweigh the challenge of managing access to the data on the old tape format.

Documents

Managing Access to Existing Data when Upgrading to LTO- …docshare01.docshare.tips/files/296/2969516.pdf · 2016. 7. 12. · HP Omniback II Legato NetWorker Yosemite TapeWare Windows