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I was hoping you may be able to help me diagnose a potential bottle neck in our backup throughput.
Currently we are averaging around 8MB/s differential backups using Veeam Backup v3.0. We are looking to migrate the ESX and Veeam storage to a new EVA 4400 SAN however I am keen to get the most out of the current setup prior to moving the backend storage. We have updates the Qlogic HBA drivers to the latest available, and I am also using defrag/zero wipe scripts to optimise any white space that is present in the VMs.
What I would like to know, is what metrics or measurements can I monitor to help identify where the bottleneck may be? You may just say that the disk subsystem needs to be upgraded to improve the performance. However I am keen to know what performance I should expect to be seeing. Can anyone offer real world stats of systems on HP EVA or MSA SANs?
What if anything else can be done to tune throughput?
Good product, I have thoroughly enjoyed working with it so far!
OS Name: Microsoft(R) Windows(R) Server 2003, Standard Edition
OS Version: 5.2.3790 Service Pack 2 Build 3790
System Model: HP ProLiant BL25p G1
Processor(s): Dual core 1.8Ghz Mhz
HBA: QLogic v188.8.131.52
SAN storage MSA 1500cs 2Gbps 7 x 146GB RAID5 Array
4 x VMware Server Cluster
OS Name: ESX 3.5
System Model: HP ProLiant DL380 G5
Processor(s): 2x Quad Core 2.7Ghz
HBA: QLogic QLA2432
SAN storage MSA 1500cs 2Gbps 6 x 300GB RAID5 Array
Using Optimal compression and VCB SAN backups the following is a typical performance.
30 of 30 VMs processed (4 failed, 0 warnings)
Total size of VMs to backup: 597.68 GB
Processed size: 563.02 GB
Avg. performance rate: 8 MB/s
Start time: 13/04/2009 00:00:14
End time: 13/04/2009 19:00:57
The fastest of the VMs that backed up was the following. This VM includes around 30GB whitespace so I expected it to be a faster backup.
15 of 15 files processed
Total VM size: 40.00 GB
Processed size: 40.00 GB
Avg. performance rate: 56 MB/s
Backup mode: VCB SAN
Start time: 15/04/2009 18:01:40
End time: 15/04/2009 18:13:54
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If it appears that you are getting great VCB data retrieval performance, then the only thing left to suspect is your target storage performance, or connection speed between Veeam Backup console and your target storage.
As for real-world stats, I am collecting those in the following thread:
Veeam Backup 3.0 : Feedback From The Field
Hope this helps!
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