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Re: [Xen-users] iscsi vs nfs for xen VMs

  • To: Christopher Chen <muffaleta@xxxxxxxxx>
  • From: Jia Rao <rickenrao@xxxxxxxxx>
  • Date: Fri, 7 Aug 2009 10:11:47 -0400
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 07 Aug 2009 07:12:34 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Thank you very much for the prompt replies.

My intention of moving to iscsi is due to pure performance purpose.
The physical hosts and the storage server are connected through a 1G switch. The storage server uses raid-5 disk array.
My current testing using iozone within VMs on both iscsi and nfs produced similar performance results for sequential and random read.

I was told it will make a big difference if there are 10-15 VMs sharing the storage server. In my case, I have 8-10 VMs.

Any experience with a larger number of VMs in both nfs and iscsi?

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