The storage folks have been pushing fibre channel gear for years, and it does have its uses. But it's also more complex, more management, more expensive, and (in current I/O terms) it's not all that fast.
Here? For a couple of vintage EV56-class Alpha boxes?
Boatloads of used SCSI gear are available on the market.
I've been tossing used DEC and Compaq SCSI gear onto these boxes for years, and it's (given the vintage and the relatively low storage capacity) a cheap upgrade. An old 4354R shelf with six or fourteen 76 gigabyte drives or later, or whatever... (The '54R series can get you dual-host, if your existing SCSI controllers will permit that, too.)
Or you go with an old in-board or out-board RAID controller, if you need that capability with your storage.
This is (all) fossil-vintage gear, servers and storage.
Or swap out the old StorageWorks bricks that tend to be in the shelves of these old servers for some "larger" drives.
HP has (had?) at least one MSA-class SCSI box available, too. MSA30, IIRC. That's a shelf. I'd be tempted to try the MSA500, if I had one spare; that's a SCSI connection, and VMS deals pretty well with that even if it's officially unsupported.
If you wanted to roll your own "newer" storage, there are SCSI to SATA disk adapters ("bridges" or "converters" or other such terms are used, too) available for small cost. That'll require some testing, and carefully staying below the one tebibyte addressing limit of OpenVMS V8.2.
The ither usual wrinkle with these boxes and remote storage is the comparatively glacial speed of the typical Alpha network controller. The 100 Mbps Ethernet just isn't that fast. (Compared with that, even the 2 Gb FC HBAs look good, but...)
