PRESENTATION TITLE GOES HERE

DAS to SAN -- iSCSI Offers a

Compelling Solution

Presented by:Jason Blosil, NetApp and

Gary Gumanow, Dell

Ethernet Storage Forum Members

CompellentDellEMCHPIntelJuniper NetworksMicrosoftNetAppPanasasSun

The SNIA Ethernet Storage Forum (ESF) focuses on educating end-users about Ethernet-connected storage networking technologies.

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Webcast Presenter

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Jason has over 13 years of Finance and Marketing

experience with manufacturing and technology firms. For

the last 9 years, he has worked in product management

and product marketing for companies within the data

storage industry. His expertise includes server based

storage and RAID, as well as external storage solutions.

Jason currently works for NetApp in Product Marketing,

specializing in iSCSI based solutions.

Jason BlosilProduct Marketing,

NetApp

Gary GumanowProduct Line Manager,

Dell

Gary Gumanow has over 25 years of experience in IT

management, systems integration, product management,

and strategic product planning.

Gary is currently responsible for product marketing of Dell’s

EqualLogic storage arrays. Prior to Dell he spent ten years

at Intel where he brought over 20 Ethernet products to

market. Gary holds two patents and has authored many

papers on networking and server platform architecture.

Today’s Webinar

What we’ll cover today…Describe characteristics and components of Direct Attached Storage (DAS) vs Storage Area Networks (SAN) and why iSCSI SANs are an ideal first step to greater data center efficiency through Ethernet based SANs

You are an…IT managers looking to deploy SANs for the first timeIT managers rethinking their existing SAN infrastructure in favor of IP SAN

We hope you enjoy this webinarWe hope you enjoy this webinar4

Future Events

Two upcoming iSCSI SIG webinars:March 3rd – Optimized Storage EnvironmentsApril 7th - Disaster Recovery/Cloud/Backup

Storage Networking World – Spring 2010 OrlandoSign up for these tutorials when attending:

iSCSI SANs - Ideal Applications, Large and SmalliSCSI - A lossless Ethernet Fabric with DCB

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Agenda

Characteristics & Limitations of DAS

Characteristics & Benefits of SANs

Why iSCSI for SANs

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Buying Storage with DAS

Storage purchase includes server hardware with disk capacityCapacity requirement is a guess – so is the right serverTypical use is for a single applicationAs capacity requirements increase, so do the number of servers

“I need more storage...

…I’ll buy another server.”

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Server Components

MotherboardDisk driveNetwork interfaceRAID controllerI/O cableFan *Power supply *

* Commonly redundant in high-end server platforms

Single Points of Failure

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DAS Options - JBOD

Advantages Greater expandability / higher density storageRedundant components at the JBODPossible server cluster & failover

DisadvantagesServer clustering is complicatedServer & I/O path still not redundant

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Additional Challenges with DAS

Limited capacity in server chassisStorage inefficiency - islandsSoftware / firmware updatesBackup and restoreSite to site failoverLimited server virtualization capabilities

Tape Drive

VM1 VM2 VM2

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VOTE #1 – DAS USAGE

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Storage Comparison

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DAS NAS SAN

Application Server

File SystemFile System

RAIDRAID

File SystemFile System

RAIDRAID

Application Server

Application Server

Application Server

Application Server

RAIDRAID

File SystemFile System File SystemFile System

SAN Storage Components

Storage network adaptersSAN switchStorage system

Redundant controllersRedundant hot-swap power & cooling unitsExpandable I/O portsIntegrated disk bays or separate disk shelf (JBOD)

Controller 1

Controller 2

PS1 PS2 PS3

Passive Midplan

e

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What SANs Deliver

Value of Storage Area Networks

Improved reliability and reduced cost of backupImproved scalability of storage capacity and performanceSimplified storage provisioningImproved data availability

Top reasons for deploying a SAN

Back-upStorage consolidation Server virtualizationSatisfy demands for additional capacityPerformanceDisaster recoveryNew project or application deployment

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SAN Benefits - Reliability

Redundant components No single point of failure

RAID and redundancyMore spindles with SANRedundant RAID and cablesBackup and recovery is universal

Multi-pathing (MPIO)Fault-toleranceLoad balancing

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SAN Benefits - Serviceability

Modular designHot swap of componentsSoftware updates are non-disruptiveRedundant data paths across network

CLR 1 CLR 2

PS1 PS2 PS3

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SAN Benefits – Resource Mobility

Virtual Machines (VMs) stored as filesHypervisors aware of VMs on other serversPermit movement of VM for load balancing or server to server and site failover

VM Files

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VM1 VM2 VM3

Hypervisor Hypervisor

VM2

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SAN Benefits - NetBoot

Network drive appears to server as a local driveBenefits:

No special purpose hardwareBroad OS supportLowers server costsBoot volumes protectedImproved performanceSimplified OS updates / managementImproved disk efficiencyEasy to scale

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Boot Volumes

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Network Boot w/ Rapid Cloning

LUN cloning reduces capacity required for common boot imagesMaster boot image is replicated with space efficient copiesClones created in seconds/minutesBenefits:

Reduced storage capacity requirementsRapid server deploymentRapid server scaling and redeployment

Master Boot LUN

Cloned Boot LUNs

SAN Benefits – Backup and Restore

Reduce complexity and increase efficiency

Important in virtual server environments

Single point backupReduces network congestion to host

Snapshot and disk to disk replication

Tape Drive

SAN Storage

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SAN Benefits – Performance & Scalability

Service multiple applications with single storage poolMore spindles for better IOP performanceHigh performance networks with multiple paths

Port bonding for IP traffic – increase overall bandwidth

Easily add capacity onlineCapacity allocation and resizing of LUNs in increments less than a drive

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VOTE #2 – SAN OBSTACLES

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Perceived Obstacles to Deploying SANs

ComplexityDifficult to setup and configure

FootprintSANs can require more equipment

ManagementRequires high touch administration

CostAll of that redundancy comes with a price

iSCSI Simplifies the Environment

iSCSI Simplifies the Environment

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iSCSI SAN Reduces Complexity

Tape Drive

VM1 VM2 VM2

Tape Drive

VM1 VM2 VM2

DAS iSCSI SAN

iSCSI Storage 24

Setup - DAS vs iSCSI SAN

Install RAID DriverInstall RAID management software (optional)Create volumeFormat volume

Install iSCSI DriverInstall storage management software (optional)Create LUN on storageMap drive letter to storage LUN IP addressFormat LUN

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DAS iSCSI SAN

iSCSI OS Network Boot Support

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OS Initiator Boot

MicrosoftNative S/W,

3rd Party HBAHBA, S/W

Red HatNative S/W,

3rd Party HBAHBA, S/W

OracleNative S/W,

3rd Party HBAHBA, S/W

SUSENative S/W,

3rd Party HBAHBA, S/W

IBM (AIX)Native S/W,

Native HBAHBA, S/W

Sun (Solaris)Native S/W,

3rd Party HBAHBA

HP (HPUX) Native S/W No

VMwareNative S/W,

3rd Party HBAHBA

Novell (Netware) Native S/W No

iSCSI Performance Options

Software Initiator + Standard NICSoftware initiator runs on host CPULow cost (Free download)May offer highest performance, but highest CPU overheadAbout 85% of iSCSI deployments

TCP/IP Offload AdapterLower host CPU overheadAdded cost for adapter, but uses OS iSCSI initiator

iSCSI HBACPU overhead similar to FC adapterHighest cost solution

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DAS vs SAN – Cost Compare (6TB capacity)

Storage Server - $8,000 est. (tower) / $13,000 est. (rack)

2 Intel Xeon Processors / 8GB memory eachRedundant power suppliesRAID Controller / cables / disksNetwork Adapter (4 port)Microsoft Server 2003 / Symantec backup

JBOD - $7,000 est.Redundant powerDisks

iSCSI Storage System - $13,000 est.Redundant controllers & powerDisks

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Why IP SAN (iSCSI)?

Mature standard (2004)

Looks like a local SCSI disk

Leverages IP Expertise

Economies of scale

Scalability / Performance

Improved TCO vs DAS

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IP SAN

VOTE #3 – ISCSI USAGE

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Questions & Answers

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To download this Webcast

after the presentation, go to

http://www.snia.org/about/socialmedia

/

Ethernet Storage Forum Members

CompellentDellEMCHPIntelJuniper NetworksMicrosoftNetAppPanasasSun

The SNIA Ethernet Storage Forum (ESF) focuses on educating end-users about Ethernet-connected storage networking technologies.

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