Hi,
Looking for some clarification on something pls folks!
I'm trying to fully understand disk groups and their interaction with HBAs. I understand a diskgroup can contain up to 7 SSDs for capacity and 1 cache device (nvme device most likely).
Can a single HBA have multiple diskgroups? I want to use a 24 bay chassis, with a sas expander, initially 7 bays populated for the capacity tier, 2 bays populated with nvme ssds for caching. For future storage growth I want to be able to drop in additional capacity drives and cache drives, will this work with a single HBA? Or is it a case of it will work, but advisable to have another HBA, as it creates another fault domain and presumably could impact performance if all drives are on one HBA? The nvme devices will be directly connected to the mobo from the sas expander.
From what I can tell the sas expander can be connected to two HBAs, splitting the drives between controllers.
