Best Practise with iSCSI and LVM

[ohaeuser_fhcon]

Hello there,

I am about to setup a proxmox installation with 2 server and one RAID system.

Right now we are using vservers but we want to migrate to OpenVZ and of course KVM.

The main server has a RAID-1 SAS setup for the system. So no suprises there.

For the LVM setup I have a couple of ideas.

Does it make sense to create one big Volume Group which I use for the VMs and the Backups ?
Or do I need two Volumegroups for this ?
I tried this on a little test server but unfortunately it's not the real thing ...

Would it make sense to create 3 groups - one for the vm, one for customer data and one for backups ?

And another thing I am not entirely sure of: KVM - LVM or Filebased ?
Does Proxmox create the necessary Logical Volumes ? Or is it better to use qow2 images for this and mount an lvm share as data volume ?

Thanks a lot for your ideas.

Ah and in the second stage I would like to add another server to this who should also access the RAID. Anyone has a setup like this using iSCSI & LVM ?

I will anyway document this maybe this is helpful for new Proxmox users

Thanks a lot -

Oliver

 

[ohaeuser_fhcon]

Ah ok - I found this guide: http://pve.proxmox.com/wiki/Storage_Model#LVM_Groups_with_Network_Backing

Sounds pretty straight forward.

I will report how it turns out.

#But still ideas and recommendations ae appreciated

Cheers -

Oliver

 

[udo]

Hi,
i have san and lvm - work's very good.
For backup you need an own raid-slice because you need an filesystem and select them as backup-space.

Udo