Network backup slow on vSphere ESX 4.0

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Re: Network backup slow on vSphere ESX 4.0

Veeam Logoby bbeavis » Wed Nov 04, 2009 9:28 pm

Has anyone tried replacing scp with a recompiled binary in order to remove the limits?
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Re: Network backup slow on vSphere ESX 4.0

Veeam Logoby tsightler » Wed Nov 04, 2009 10:42 pm

The limit is not with SCP. It appears even when using other methods like agentless mode, and VMware's own VCB NBD mode and can even be seen simply copy files around with the service console. Basically, it appears that VMware didn't realize that there were actually good reasons you might need a decent performance out of the service console and, when they redesigned that environment to access the underlying hardware via the VMkernel they just didn't take performance into consideration. I've wondered if you could simply increase the resources to the service console to get some performance back but I haven't tried because I've decided vStorage API is the way to go.
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Re: Network backup slow on vSphere ESX 4.0

Veeam Logoby albertwt » Wed Nov 11, 2009 5:34 am

Yes, that's true, using the NBD with the current separate subnet of VB4.0 physical backup server and the SAN, I've got like:

22 of 22 VMs processed (0 warnings)Details
Total size:792.0 GB Processed size:712.0 GB
Processing rate:15 MB/s Total time:13 hours 54 minutes

so in this case you're all not alone in this matter.

Next time I'll try to use with vStorage API and make the backup server in the same subnet as the iSCSI SAN.
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Re: Network backup slow on vSphere ESX 4.0

Veeam Logoby vmbackupuser » Tue Dec 01, 2009 8:15 pm

VMware's official stance on the the slower network speed via the service console in ESX 4 (Updated: Nov 19, 2009)
http://kb.vmware.com/selfservice/micros ... Id=1012159
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Re: Network backup slow on vSphere ESX 4.0

Veeam Logoby Eriontec » Wed Jan 06, 2010 7:18 pm

Any info on this subject?

I have several small scale customers with directly attached disks who replicate their vm's between servers.

I've upgrade from 3.5 => 4 with performance downgrades on the replication (15 - 20 mb/s max)

Now i've upgrade to 4 U1 and still it doesn't seem to be fixed by Vmware the speeds my customers are getting are still the same.
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Re: Network backup slow on vSphere ESX 4.0

Veeam Logoby Gostev » Wed Jan 06, 2010 7:58 pm

Erik, no news, but your customers should really be getting better incremental replication performance than on ESX 3.5 due to the ESX4 changed block tracking, despite service console disk read slowness. Have they switched their jobs to the vStorage API processing mode?
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Re: Network backup slow on vSphere ESX 4.0

Veeam Logoby Gostev » Fri Jan 08, 2010 11:11 am

Reportedly, the latest patch from VMware somewhat fixes the issue:
New ESX Patch ESX400-200912401-BG
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Re: Network backup slow on vSphere ESX 4.0

Veeam Logoby Gostev » Mon Jan 11, 2010 1:42 pm

Confirmed the patch to improve the service console agent based backup speed on ESX4 in about 2 times for me compared to ESX4 RTM.
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Re: Network backup slow on vSphere ESX 4.0

Veeam Logoby deebsr » Tue Jul 06, 2010 11:44 pm

Is this patch part of the vSphere Update1? what about Update2?
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Re: Network backup slow on vSphere ESX 4.0

Veeam Logoby Vitaliy S. » Wed Jul 07, 2010 9:31 am

Hi Shaun,

As far as I know this patch didn't make it to vSphere Update 1 release. Also there is no information about the patch if you look at the release notes for Update 2 either. So I believe you should still install it separately.

Thanks!
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