A storage analysis based on a VMware P2V project. This analysis looks at the necessary storage infrastructure required to support a 500 VM environment on EMC LUNs and NetApp NFS volumes.

1. VM WARE S TORAGE
N ETA PP VS EMC
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2. S TORAGE L AYOUT
A SSUMPTIONS
Common Assumptions
Total Virtual Machines = 500
Avg Data & OS size = 96GB per VM (Based on P2V Scenario)
Double Disk Failure Protection
FC disks only
Growth Rate = 15% & Fudge Factor = 10%
No data protection – No NetApp Snapshot or EMC BCV
30 ESX servers
EMC Assumptions
LUN should < 2TB
RAID-10 technology (20 drives per RAID group) + 40:1 hotspare ratio
FC LUNs are thick provisioned by default
NetApp Assumptions
30% Deduplication (Due to P2V process, OS and Data drives will be mixed thus reducing dedup to an estimated 30%)
100 VMs per NFS datastore
RAID-DP technology (16 drives per RAID group) + 2 hotspare for every 100 drives
NFS is thin provisioned by default
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3. VM WARE S TORAGE – EMC
Number of Datastores = 38
Allocated Space = 70TB
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4. VM WARE S TORAGE – N ETA PP
Number of Datastores = 8
Allocated Space = 41TB
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5. C OMPARISON – EMC VS
N ETA PP
EMC NetApp Advantage
Number of Datastores 38 8 79% (less is better)
Allocated Capacity 70TB 41TB 42% (less is better)
Number of Disks 360 x 450GB 140 x 450GB 63% (less is better)
(including RAID + Hot Spares)
EMC NetApp Advantage
Datacenter Space 72RU 30RU 58% (less is better)
(does not including controllers – only diskshelves)
Datacenter Cooling 34,800 BTUs 14,140 BTUs 59% (less is better)
(does not including controllers – only diskshelves)
Datacenter Power 10.32 kW 4.43 kW 57% (less is better)
(does not including controllers – only diskshelves)
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6. C OMPARISON – V ISUAL
• 42% less storage
• 58% less space
• 57% less power
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7. N ETA PP –
S TORAGE E FFICIENCY
Thin Provisioning of VMs via NFS
Provision based on space used by physical server, not by the allocated drive
space.
Deduplication Technology
We anticipate 30% deduplication per datastore based on elimination of
duplication data within OS drives.
Save
18% Save
70TB 57TB 42% 41TB
Thin Provisioning Thin Provisioning + Dedup
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