[pve-devel] Add functionalities

[Michael Rasmussen]

On Wed, 15 Oct 2014 17:02:25 +0200
Serge NOEL <serge.noel2008 at gmail.com> wrote:

> Exactly, we are working on disaster scenarii and we want to find quick
> solution in case of SAN failure.
> In this case, we imagine that SAN will be unavailable, and we hope to be
> able to restart with NAS (iSCSI) as replacement target, if we are able to
> make copy of all VM, (it seems OK, i tried to copy lvm volume group with dd
> : it's works) during normal operations. Doing so, in case of failure, all
> we have to do is : to say to Proxmox to use disk from different iSCI (or
> NFS) target.
Isn't that dangerous? I mean your approach will surely cause the loss
of data since all changes between the time of creation of the fall-back
disk an the incident will be lost!

If you need uptime like 99.999% you should drop you single point of
failure SAN an move on to clustered storage since clustered storage is
the only viable solution to your high demand on uptime.

-- 
Hilsen/Regards
Michael Rasmussen

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