For SBD configuration, can we use three different disks from three different tiers, with different speed and with different size?
OS is SUSE 15 SP1
I am not sure what you mean by different tiers, but speed and size should not matter.
Here tiers means emc or other vendor's storage level tier1, tier2 like this.
I don't see why that wouldn't work.
my only question is about the performance impact on cluster.