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ZFS on Nextenta vm, configuration ... slow performance

Posted on 2012-12-20
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Last Modified: 2012-12-21
Hi,

So I configured a Nextenta vm on my ESXi 5.1, it runs on a local SSD of the ESXi.
Added 3 of 4 ssd's in Sharkoon via raw mapping to the vm (4th is not seen, probably esata cable loosened, have to check that).

Created a NFS zraid with these 3 SSD's and put 1 vm on it.
nextenta
Not what I expected, honestly. Ok, it's a vm (Nextenta) but still disks are mapped directly, memory is not used heavily .... Performance of 1 SSD is faster then this ZFS ZRAID.

Shouldn't I use ISCSI or caching, or logs ...?

Am I missing something?

Please advise.
J.
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Question by:janhoedt
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LVL 120
ID: 38710040
what's the performance? can you give us some values?
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by:janhoedt
ID: 38710048
Where should I get the values from? Please advise.
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LVL 120
ID: 38710063
Benchmark and test.
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Author Comment

by:janhoedt
ID: 38710076
You mentioned some tools to do this (portable ones I think), could you mention them again? I'll then run these and paste the results here.
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Author Comment

by:janhoedt
ID: 38710082
Btw, does it (ZFS Nextenta) get faster when you use it longer, even without cache configured? Seems to be so ....
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Author Comment

by:janhoedt
ID: 38710217
Loading nextenta volume with vm's now.
Note: could configuring ISCSI bring improvement versus NFS?
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LVL 120

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 38710376
Napp-it contains Bonnie and DD benchmark tests, which will perform the tests actually on the NAS.

Others include I/O Meter, CrystaldiskMark, HD Tach
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LVL 120
ID: 38710378
iSCSI could be faster than NFS, again benchmark and test, check with Jumbo Frames enabled and disabled.
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Author Comment

by:janhoedt
ID: 38710466
Nappit? Its not installed, should I?
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LVL 120
ID: 38710506
if you are going to run Bonnie and DD tests.

what benchmarks do you have for you existing NAS?
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Author Comment

by:janhoedt
ID: 38712223
I cannot use jumbo frames since not all my devices support it. Afain, I just needed a blackbox fast nas, nothing more, nothing less.
I ll follow the config you made and tested. Don t need or want to spend to much time anymore testing/configuring.
My lsi should arrive soon, I ll order 3 2tb disks and will install solaris with nappit on bare metal then. Can you share your config/help me further configuring then? When finished I hope not to need to touch anymore and focus again on vms/windows no storage anymore.
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Author Comment

by:janhoedt
ID: 38712304
Fyi: performance overview OpenIndiana, Solaris & Nexenta: http://blog.b3n.org/2011/12/solaris-11-openindiana-and-nexentastor.html
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LVL 120
ID: 38712364
Yes, as I've maintained ZFS in Oracle Solaris has always been the best for performance.
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