Advice on how to set up a cluster with different storages

[Mogaba]

Hello,

I have four servers and two SANs. Server 1 and 2 are connected to the first SAN, servers 3 and 4 are connected to the second SAN.
I'm new to Proxmox and I'm not sure how I should set up a cluster: should I make a single cluster of four servers or two clusters of two servers connected to the same storage?
Are there any benefits of a single cluster if servers are connected to different storages?
If I set up two clusters though I will be able to use shared storage, right?
Can someone give me an advice?

 

[LnxBil]

If I set up two clusters though I will be able to use shared storage, right?

No, not directly via the SAN.

Are there any benefits of a single cluster if servers are connected to different storages?

Cluster of two-nodes is nonfunctional. You need another node or qdevice to have a quorum device. This could be a VM running on the other cluster.

should I make a single cluster of four servers or two clusters of two servers connected to the same storage?

2 or 4 is not a good number to create a cluster. There should be 3 or 5 nodes in order to have quorum. Having two distinct storages is doable, yet hard. You need to define exactly where VMs can run or failover in case of an error.