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ZFS on Nextenta vm, configuration ... slow performance
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.
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.
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.
VMware
Last Comment
Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)
what's the performance? can you give us some values?
ASKER
Where should I get the values from? Please advise.
Benchmark and test.
ASKER
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.
ASKER
Btw, does it (ZFS Nextenta) get faster when you use it longer, even without cache configured? Seems to be so ....
ASKER
Loading nextenta volume with vm's now.
Note: could configuring ISCSI bring improvement versus NFS?
Note: could configuring ISCSI bring improvement versus NFS?
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iSCSI could be faster than NFS, again benchmark and test, check with Jumbo Frames enabled and disabled.
ASKER
Nappit? Its not installed, should I?
if you are going to run Bonnie and DD tests.
what benchmarks do you have for you existing NAS?
what benchmarks do you have for you existing NAS?
ASKER
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.
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.
ASKER
Fyi: performance overview OpenIndiana, Solaris & Nexenta: http://blog.b3n.org/2011/12/solaris-11-openindiana-and-nexentastor.html
Yes, as I've maintained ZFS in Oracle Solaris has always been the best for performance.