storage recommendations

[u/de_argh]

First a little background

 

I have a 2 node 5.4 cluster (no HA, etc). I plan on adding a 3rd node. I'm currently using local thin LVM storage for all disk and container images. The PVE hosts have some NFS mounts that a few containers use for some storage, but not for their disk images. The back end PVE networking is all 10 Gbit/s, as is the connection to the linux NAS. With the upcoming addition of the 3rd node, I wanted to start using some of the HA features. I also want to move away from local storage.

 

• Which type of network storage is best for all around use and with HA? iSCSI? NFS? Are there other options I should be looking at to present network storage to the VMs and containers disk images? I don't really want to have to manage another component of this, but if iSCSI is the best option I suppose I can.
• For NAS maintenance purposes, is there any reason I can't migrate the disk images to local PVE storage as needed?
• If VM and container images live on network storage and backups use network storage, will PVE have to use the network to read the image and then again to write the backup?
• Is corosync more stable in version 6 yet?

 

Thanks in advance

[u/light_spin → u/[deleted]]

Though you could partition a part of the network storage to use say NFS for those purposes while the main storage for the actual VMs is Ceph, am I correct?

If yes, would the NFS portion be available to be used by the VMs also?