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