Storage Model with Proxmox 2. iSCSI + LVM vs NFS

J

joelserrano

Renowned Member
Mar 16, 2011
33
0
71
Hi everybody,

I'm planning to migrate to Proxmox v2.

Right now we have a QNAP with RAID6 (8TB) shared over iSCSI + LVM to the Proxmox nodes. (1 master + 3 nodes, aprox 150VMs total)

iSCSI + LVM gives me the ability to do live snapshots, but I've never used them.

If I change to NFS, the QNAP has a replication option I can enable and have all VM's on a second QNAP. (Although I'm not quite sure if this would actually work as a dissaster recovery solution.)

Said this, are there any special recommendations on why I should use iSCSI + LVM over NFS? (both allow live-migration).


Maybe I should use Proxmox + QNAP with "iSCSI + LVM" and leave snapshot backups in the second QNAP with a normal NFS share?


Thanks in advanced.


Best regards,
Joel.
 
What model of QNAP do you have? We are thinking to buy a SAN/NAS solution to use iSCSI but we have fear about the performance.

Any special switch o have the servers directly attached to the SAN using a second (or third) NIC?

Thanks in advance
 
I'm also thinking about a QNAP for this very purpose. Any info would be very helpful in deciding what choice to make.

/b
 
Hi,

We have 2x TS-809U-RP (http://www.qnap.com/es/pro_detail_feature.asp?p_id=111) with no special switch.

The truth is that our VMs are mostly SIP Servers and don't require high disk performance and so far we've had 0 problems. (Our current max is 70 VMs running on the same proxmox node with iSCSI + LVM)

One thing I do have to point out, I'm not sure in Proxmox v2 but in v1.X you can't delay the start up time between servers, and If you even try to start 70 VMs at the same time you'll never finish the boot up process.

I had to implement this: http://forum.proxmox.com/threads/5575-HACK-KVM-only-Control-order-and-delay-starting-VMs-in-proxmox and that did the trick.

I suppose (& hope) in v2 this is already included :-)

PS: If you need extra info just ask me!


Hope it helps.

Regards,
Joel.
 
I'm one of the founding members of the FreeSWITCH Project. I used to be a heavy Asterisk user and contributor.

/b
 
You must log in or register to reply here.
Top Bottom