I always found snaprestore nearly instant to revert an entire volume but slow for a single file and always use ndmp for single dike /folder restores. From peters comments , maybe I will revisit snsprestore for files as I have bed using ndmp for several releases ________________________________________ From: toasters-bounces@teaparty.net [toasters-bounces@teaparty.net] on behalf of Learmonth, Peter [Peter.Learmonth@netapp.com] Sent: Friday, August 01, 2014 1:58 PM To: Markus.Schlegel@roto-frank.com; toasters@teaparty.net Subject: RE: SnapRestore very slow
Hi Markus What version of ONTAP is this? In 8.1, we changed single file SnapRestore to use SIS clone as the underlying engine to revert the object – way faster, and makes the object immediately available as it does the clone in the background. I don’t remember if it requires a FlexClone license or just SnapRestore. Which of those licenses do you have?
Peter
From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Markus.Schlegel@roto-frank.com Sent: Friday, August 01, 2014 4:19 AM To: toasters@teaparty.net Subject: SnapRestore very slow
Hello,
i played a bit with VMware + NetApp VSC Backup/Restore and was very surprised by the bad performance of SnapRestore on a NFS Storage.
It took SnapRestore 24 hours to restore a 1TB vmdk! Looking at the filer usage (sysstat) it looked like the filer just copied the files out of the Snapshot into the live filesystem with terrible slow 12MB/s. I always thought that SnapRestore restores in a few seconds because if just copies the pointers and not the data itself.
I tried the same again (copying out of the Snapshot), this time with ndmpcopy and got ~350GB/h, which is around 100MB/s and an expected result
Currently we don't own the SnapManager License for VSC - maybe thats the problem? A short test using the cmdline wasn't faster...
Best Regards,
Markus Schlegel
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