[PVE-User] Recovery Disaster - What is the best practice...?

Thomas Lamprecht t.lamprecht at proxmox.com
Thu Jan 26 13:10:08 CET 2017


On 01/26/2017 10:25 AM, Yannis Milios wrote:
> Your question is quite generic because it depends how you have configured
> your PVE, what will be the storage backends etc.
> I will assume that you have one PVE server with VMs stored in a local
> storage like LVM or ZFS. You have a NAS as well where you store the backups
> of these VMs (full backups).NAS is configured on PVE as a  NFS target.
> So if your PVE server dies, the only thing needed is to mount NAS as NFS
> target on the new PVE server and just retore the backups there. That could
> take some time depending on the size of VMs.

If you have a reliable redundant backing storage for PVE which hosts the 
VM disks another option could work also:
As the safeness of the VM disks gets guaranteed by your backing storage 
just backup the VM configurations.

If a PVE server fails (hardware failure, or other reasons) you may just 
setup a new one,
setup the storage the same way you had on the old failed PVE and restore 
the respective VM configs.
Now you can just start them, no waiting for restoring a full backup.
As said this works only if the backing storage is reliable and redundant 
(i.e a good ceph setup).

And more important: full off-site backups (Tape or external reliable 
storage) should be made nonetheless.
For the case when the Datacenter burns down, gets hit by an avalanche.
Disasters can and do happen.


cheers,
Thomas

>
> Yannis
>
>
> On Thu, 26 Jan 2017 at 00:09, Leonardo Dourado <
> leonardo.dourado at itrace.com.br> wrote:
>
>> Hi All!
>>
>> Can someone please advise what is the best procedure in case of recovery
>> disaster?
>>
>> My scenario is:
>> I have a PVE Server running a few machines, I also have a NAS with some
>> disks... I wanna point to that NAS the backup of these machines (in a way I
>> can recover them in another server in case of hardware failure).
>>
>> I see on PVE the Backup service, I am not sure if I have to recover a
>> whole VM to another server that is the proper service, it looks too simple
>> (mostly snapshots).
>> My plan is have Proxmox as a main server for VMs so, I have to think about
>> "if my hardware fails", what can I do to move the machines to another
>> server...
>>
>> Much appreciated,
>> Leonardo D.
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