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

[Dustin Black <vantage@xxxxxxxxxxxx>]

We are using iSCSI with CLVM and GFS2 very successfully with 10 physical Xen servers and 80 to 100 VMs running across them.  We use file-based disk images, all stored on a single GFS2 file system on a single iSCSI LUN accessible by all 10 Xen servers.

On Fri, Aug 7, 2009 at 10:11 AM, Jia Rao <rickenrao@xxxxxxxxx> wrote:

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?

Jia.

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users