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PaulVM
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NFS or iSCSI

Post by PaulVM » Apr 10, 2012 3:20 pm

I have a NetApp 2240 and have to dedide whether to use NFS or iSCSI. Normally I'd choose NFS but I've not deployed Veeam before.

Will Veeam directly read the NFS storage for backups or will it utilise the ESXi hosts?

I guess what I'm really asking which has the best performance backup wise. Note I can Etherchannel the NFS storage to give 2GB from the Veeam server and the NetApp

Gostev
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Re: NFS or iSCSI

Post by Gostev » Apr 10, 2012 3:33 pm

Personally, I would go with iSCSI and direct SAN access mode. Your question is covered in great details in the sticky FAQ topic. Thanks.

PaulVM
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Re: NFS or iSCSI

Post by PaulVM » Apr 10, 2012 4:07 pm

Do I need the Enterprise Version of vSphere for the Hot Add mode if using NFS with Virtual Applicance Mode?

What sort of times would you expect to be able to backup 1TB of data using:
a) iSCSI and Direct SAN Attach
b) NFS and Virtual Applicance Mode

Thanks

Gostev
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Re: NFS or iSCSI

Post by Gostev » Apr 10, 2012 4:12 pm

Hot Add processing mode will work with any vSphere edition.

Performance depends heavily on storage and backup infrastructure, and may vary up to 10 times from environment to environment. NFS and VA mode is generally limited to 30-60 MB/s (most typically reported numbers), while iSCSI and direct SAN can go as fast as the line speed if the storage allows (with proper iSCSI traffic tuning).

PaulVM
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Re: NFS or iSCSI

Post by PaulVM » Apr 10, 2012 4:22 pm

Assuming 30MB/s then I could back up 1TB in just under 10 hours.

Even with 1GB NICs and iSCSI SAN direct access I cannot see throughput being above 50MB/s due to networking limitations or am I being daft?

dellock6
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Re: NFS or iSCSI

Post by dellock6 » Apr 10, 2012 6:53 pm

To further increase the confidence in Virtual Appliance mode, I can say I've seen even better numbers using our LeftHand cluster, tipically around 80 MBs, with some spikes at 90. Not as fast as Direct SAN (110-120 MBs) but really usable.
Luca Dell'Oca
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