I got some good information, thanks to repliesse,
Alan_at_nabeth and Joe Fletcher
Their replies follow:
--- alan_at_nabeth.cxo.cpqcorp.net wrote:
>
> The corporate Alpha web page is:
>
> http://www.compaq.com/alphaserver/platform.html
>
> The problem is that Compaq has been particularly
> good
> at forgetting that anything it sold more than one
> generation ago ever existed. Information for
> anything
> older than a ES40 class system is likely to be
> sparse.
>
> Storage information will be probably be hanging off
> www.compaq.com/storage.
>
> Briefly. The first generation DEC 4000,
> AlphaServers 2100
> and 2100A, AlphaServer 4000/4100 and ES40 are
> approximately
> the same class of system. As the systems have
> gotten faster,
> they've moved up from being "Departmental" to
> "Enterprise".
> Our progression of class seems to go:
>
> Workgroup -> Departmental -> Enterprise -> Global
> DS... ES... GS...
>
> Keeping in the same general class but allowing for
> reasonable
> expectations in increased performance, memory
> capacity, storage
> capacity, etc., the growth path from an AlphaServer
> 4100 is
> some model of ES40 or ES45. I haven't read the
> QuickSpecs
> for the family closely, but I think that have
> similar model
> tradeoffs like the 4100/4000 did; more I/O capacity
> with
> some loss of memory/CPU capacity.
>
> On the storage side, they have transitioned from
> supporting
> parallel SCSI to Fibre Channel. The direct path
> from the
> HSZ70 is considered the HSG80. There may still be
> a direct
> upgrade part offered. The back-end storage doesn't
> need
> to change. We may still sell the HSZ80 which is
> the parallel
> SCSI version of the HSG80.
>
> Within the last couple of years we've also offered
> new
> packaging options; the Modular storage system.
> These
> MSA and MA subsystems support use of the Compaq
> "Universal"
> drives (*). Converting to MA/MSA based subsystem
> will
> mean getting new drives and packaging. It is worth
> noting
> that the largest drive offered for the RA/ESA
> subsystems
> is a 36 GB drive, while the MA/MSA subsystems are
> up to
> 72 GB.
>
> We recently announced a new family of Storage
> products that
> use Fibre Channel for the host side connection and
> the back-
> end device connection. These also use the MA/MSA
> drive
> packaging, though for Fibre Channel drives instead
> of
> parallel SCSI. These are the Enterprise Virtual
> Array
> subsystems (EVA).
>
> (*) Apparently "Universal" in the sense that the
> packaging
> is shared among classic Compaq storage designs,
> inherited
> Digital Storage designs, classic Compaq CPU
> packaging and
> inherited Digital Alpha packaging.
Fletcher, Joe Wrote:
In your case the direct path upwards is probably the
ES40 and DS20
systems.
In effect from lowest to highest
it goes DS10, DS20, ES40, ES45, GS80, GS160 and GS320.
See
www.compaq.com/alphaserver/index.html for the outline
and startpoint.
As I recall you should have no problems using HSZ70s
with ES40s.
=====
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Received on Mon Jan 07 2002 - 01:11:41 NZDT