Large SAS array and High-availability setup

[papirov]

Hi all,

I currently have an Unraid server running on HP DL380G9 with a large (220TB) SAS array that is connected to my Unraid server through an LSI SAS adapter. (In fact it's 2 SAS enclosures, with 15 8TB disks each).
This Unraid server runs a bunch of different docker containers, some of which utilize the array and the GPU card onboard (Plex, Home Assistant, etc).

I'd like to introduce some resiliency into my setup, and already have a spare DL360G9 server with a GPU and can procure another set rather cheaply.

I'd like to understand if I am able to run an Unraid VM on a Proxmox HA cluster and no matter what server it runs on, have it control the SAS array, so that SAS array does not go down in case of primary server outage, as well as obviously non of my dockers go down?

Appreciate any advise

 

[bbgeek17]

If you can connect two servers to the SAS array at the same time, then you will get shared physical storage.
However, it is very likely that your current volume/filesystem layout is NOT compatible with shared storage and will need to be re-done.
Rather than repeating myself, see my responses in this thread that is only a few hours old:
https://forum.proxmox.com/threads/shared-sas-storage-for-proxmox-cluster-2023.123822/

Also, if I am not mistaken, there is no live migration of LXC - the container will be restarted cold, unlike the VM where its state is transferred.

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Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[papirov]

Appreciate the reply. I was hoping to just utilize the same Unraid just in a VM that should recognize the array, no matter what physical node it runs on and pass the controller/gpu to this VM, no matter the physical node. Is this possible?

 

[bbgeek17]

Ah, so you are passing through the PCI SAS? I dont believe anything has changed radically since this was posted:
https://forum.proxmox.com/threads/ha-migration-of-vms-using-local-devices.55261/

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Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox