Virtualization What’s Next
Now that you've virtualized you Core, Image, and Domain Systems;
• Types of Backups– Remote?– Local?
• Paravirtualization?• System Requirements?• Benefits & Drawbacks
What’s Next?
Types of Backups
• Local; best for file recovery over multiple days– Tape– Disk-NAS Replication– NAS-NAS Replication
• Remote; best for whole system disaster recovery– System-System replication– File Replication – Virtual Drive Replication (bit level)
Specifics – PC-Core
New Configuration w\ Linux• Two Drives – System & Archive\Backup• System Drive = System• Archive\Backup (all replicated to
backup):– Archive Reports (COLD) Storage– 10 day backup files (tape rotation)– Monthly/Yearly backup
• Virtualization requires in-depth system knowledge (RHCA/RHCE)
Specifics - CheckImage
• Non-Archived files replicated daily– Quick rebuild of recent data
• Other Data Archive to DVD & Yearly Databases
• Databases manually moved
yearly; due to size• Requires Para-Virtualization
– Physical DVD-Burner attached to Virtual Machine
• Bandwidth Intensive for bit-level replication used in virtualization (5-20Mbps required)
System Requirements - Typical
• Core/Image/Domain virtualized on single Hypervisor w\ NAS; Local & Remote– 2 Hypervisor, 2 Large NAS’s– Decreased Hardware Cost– Increased Software Cost– Single point of Failure for all– Disk Access (speed) Issues– More negatives over single
systems than positive
System Requirements - Recommended• Recommended – Core/Image/Domain
virtualized on dual Hypervisor w\ dual NAS; Local & Remote– 2 Hypervisor, 2 Large NAS; Local– 1 Hypervisor, 1 Large NAS; Remote– Fast Recovery– Same Hardware Cost– Increased Software Cost– Increased Complexity– Disk Access (speed) Issues– More negatives over single systems than
positive
System Requirements - Advanced
• Core/Image/Domain virtualized on dual Hypervisor w\ dual NAS; Local & Remote; with Failover– 2 Hypervisor, 2 Large NAS; Local
• 1 Additional VM Manager\Replicator– 1 Hypervisor, 1 Large NAS; Remote– Immediate Recovery– Increased Hardware Cost– Increased Software Cost– Increased Complexity– Disk Access (speed) Issues
Benefits & Drawbacks of Virtualizationat the System Level• Faster Local Recovery w\ Failover• Large file changes = Large amount of
data replication• Increased Cost• Decreased System Speed• Increased Complexity
Virtualization Recommendations
• Cost Benefit Analysis• Implement In-house for 10+ Systems• Outsource <10• Fully Implement!• Fully Document & Test!• Dedicated IT Staff or Qualified
Outsourced• Patch Management