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xen-users
Re: [Xen-users] Opinion on best way to use network storage
On Friday 12 November 2010 04:28:46 VPS Lime wrote:
> I need the community's opinion on the best way to use my storage SAN to
> host xen images. The SAN itself is running iSCSI and NFS. My goal is to
> keep all my xen images on the SAN device, and to be able to easily move
> images from one host to another as needed while minimizing storage
> requirements and maximizing performance.
>
> What I see are my options:
>
> 1) Export a directory through NFS. Create image files on the NFS mount and
> have each zen guest use the image off the NFS mount. This has the benefit
> of all images being visible to all hosts (on the NFS mount), but I'm not
> sure about the performance.
> 2) Create an image on the SAN server for each XEN host and export it to the
> XEN servers through iSCSI. The XEN server will see it as a VolumeGroup.
> Create Logical Volumes in the VolumeGroup for each XEN guest. Has the
> advantage of using LVM for the guest instead of an image file (which is
> rumored to be faster). Disadvantage is individual images are not easily
> moved to other hosts
> 3) Create a image on the SAN server for each XEN guest and export it
> through iSCSI. Attach XEN guests directly to the iSCSI image. Has the
> advantage of being portable to other hosts, maybe more efficient?
>
> Thanks in advance
Do you want to snapshot your Xen guest storage by means of LVM?
B.
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