Need advice: iSCSI + 3 node cluster

[newbx]

Hi,
I need advice whats best scenario to connect 3 node Proxmox cluster to PowerVault ME5024. NAS has 2x iSCSI connectors, and each Proxmox node has 2x10GB.
I used to have 10GB switch between NAS and cluster but now I decided to connect cluster directly to NAS. So far I connected each node to NAS like NIC1:Controller_A, NIC2:Controller_B. SO I have used 3/4 ports on each controller. I am planning to use 4th port on each controller to also connect Proxmox Backup Server.
Now I am at creating volumes and hosts on NAS and I wonder:
1) Should I create 1 host with 3 initiators for cluster and 2nd host with 1 initiator for backups server

2) or should I create 3 separate hosts with 1 initiator each for each node separetly ?

3) or I messed all up and should do it different, and how?

 

[bbgeek17]

Hi @newbx , welcome to the forum.

With a 3 node Proxmox cluster, assuming all 3 nodes need access to the shared storage and each node has 2 network ports, you should:
a) Have a network switch, preferably two with MLAG connectivity
b) connect each client to both switches and use LACP
c) each client will have a unique IQN
d) your NAS host group (or whatever it is called for your particular vendor) will contain 3 unique IQNs, one from each host
e) if your PBS needs access to a separate LUN - it can be physically connected the same way as your PVE hosts. It needs to be in a separate "host group" with access to a dedicated LUN

These are best practices. Whether they are suitable for you will depend on your business requirements.

Good luck

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