Hi All. I wanted to comment on this performance thread. I've worked on a
benchmark in a NetBackup 7 and vSphere 4 environment. During this testing I
was able to achieve a backup performance of several hundred MB/sec. The paper
that describes this testing can be found here:
http://www.symantec.com/en/nz/business/products/whitepapers.jsp?pcid=2244&pvid=2_1
The name of it is:
"Symantec NetBackup, Cisco UCS, and VMware vSphere Joint Backup Performance
Benchmark"
The paper provides suggestions on how to test backup performance in VMware
environments. During the configuration phase of this testing I found a number
of performance issues that were hardware related. Using the testing
methodology outlined in the paper I was able to improve performance
significantly.
I just mention this as you might find it helpful as you try to determine what
is causing your backup performance issues.
George Winter
Symantec
-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Crowey
Sent: Tuesday, February 08, 2011 6:29 PM
To: VERITAS-BU AT MAILMAN.ENG.AUBURN DOT EDU
Subject: [Veritas-bu] Vmware backups under 7.0
>>On 02/08/2011 11:25 AM, Rusty.Major < at > sungard.com wrote:
>>The only thing I am having concerns with are the speeds that we're seeing
>>so far. We are getting about 35MB/s from each VM. What speeds are others
>>seeing?
>>Same here. I did some preliminary tests and we were getting around 20 to
>>25 MB/s. The backup-host had a 1Gbps HBA and our tape-drives are LTO4
>>(connected thru a 8Gbps Fabric). This was my first time doing backups
>>thru the SAN and couldn't believe how slow the backups were compared to
>>LAN-based backups.
>>I'm doing a hardware refresh (new server) in the next couple of days.
>>This server has two 8Gbps HBAs (one will be zoned to the storage-array
>>and the other one to the robot-library). Each HBA goes to a different
>>Fabric (8Gbps) and I'm expecting , at least, getting around 100 MBps
>>which I think is reasonable. Is anyone out there reaching these speeds?
I wish I was getting a mere 25/35MB/s, currently I'm getting a 10th of that (if
lucky).
I take it that these are flashbackup-windows backups? And is your VCentre
server virtual or physical - mine is virtual.
I'm getting woeful backup performance, and it doesn't seem to matter if to disc
or tape. And I'm not sure how to troubleshoot - for example, I can do a full
backup inside a Guest of say a notes database at significantly faster speeds
than our flashbackup backups. And that's using either disc and/or tape. And
obviously that's all going through the vSphere infrastructure to the
master/media server (a RHEL 4.8 64bit box). So I'm not convinced its as simple
as saying bandwidth is being saturated - especially as I've timed the backups
when there is no/little activity on the network (and no other backups running).
Are you using a SAN backup, or is it over the network? (I tried a SAN backup,
but it failed)
Cheers
Crowey
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