Hardware-Raid 5 and VM Replication

[Demigod]

Hi,

I bought a new server with a hardware raid (LSI 9361-8i) with 2GB Cache to host differnt Windows-VMs on it, for DC, Fileserver, VPN and so on.

My distributor suggests to use proxmox as most of his customers use it. So I'm now going to evaluate it.
The installation was very simple at the first moment. but then I wanted to replicate a test vm to another proxmox instance on a testcomputer.
The idea is, to have the opportunity to manually start the VMs on another machine, if the original host fails.

I've created a cluster with both servers and then wanted to replicate the vm to the second proxmox instance.
Then I got an error, that seems to occur due to the chosen filesystem. I tried ext4 and xfs and the outcome is the same. I can't add the replication.
I found serveral threads here but nothing tells me what my options are.
As far as I understand it would only be possible by using btrfs or zfs. Which causes a Software Raid on a Hardware Raid.
Are there any other ideas?

The opportunity to do snapshots would be fine too.

Thanks in Advance!

 

[mira]

If you want to use replication, your only option is ZFS [0]. We don't recommend it on top of a RAID controller though.
If you can flash it to IT mode, it should be fine.

Replication still needs manual intervention when the host the VM was last on, is down. You then have to copy the config file to the right folder before you can start it. And you should use a quorum device [1] if you only have 2 nodes.


[0] https://pve.proxmox.com/pve-docs/pve-admin-guide.html#chapter_pvesr
[1] https://pve.proxmox.com/pve-docs/pve-admin-guide.html#_corosync_external_vote_support

 

[Demigod]

Are there any reservations of using drbd partition to replicate the LVMs to another machine?

 

[mira]

It requires a third party plugin and we don't offer any kind of support for it.
Other than that, nothing from our side.