[Info-vax] VMS Storage options

[Robert A. Brooks]

On 10/23/2020 3:07 PM, Mark Berryman wrote:
> To those VSI folks who sometimes respond here:
> 
> Are you aware of any requests from your customers for iSCSI support?

In six years, I've heard of a single customer who asked about it.

> I could also provide SSD based storage via Fibre Channel if VMS did not require 
> a UDID.

We have several customers using non-HP arrays that are backed with SSD's for the
virtual disks.  These arrays have been qualified by us for VSI VMS.

> Here's a thought:
> Since tape devices do not support UDID, their WWID is placed in 
> SYS$SYSTEM:SYS$DEVICES.DAT and their VMS device name is defined there. Could the 
> same be done for disks?

I'll have to check on that.

My initial thought is yeah, we could probably make that work, but there are 
enough differences between disks and tapes that we'd wind up with a lot of
device type-specific code that it would be a maintenance mess for marginal gain.

Add in the concern about breaking the fibre channel multipath stuff that's been 
stable for 20+ years . . .

-- 
                  -- Rob