[Info-vax] The Future of Server Hardware?

[Stephen Hoffman]

On 2012-10-03 14:18:35 +0000, Jan-Erik Soderholm said:

> Stephen Hoffman wrote 2012-10-03 15:44:
> ...
> ...
> 
>> IBM offers flash-based SSD caches in their XIV, and
>> probably in the DS8000 storage controllers.
> 
> We are currently moving VMS storage at a customer site to an
> all-DS8000 solution. This summer this site upgraded (or rather
> replaced) their DS8000 with a newer modell. When I talked to the
> DS8000 manager and got our 24 and 48 GB discs configured, he said
> that they was so small that he had thought of putting them 100 %
> on the SSD part of the DS8000. But we decided that that was
> not needed, we get enought I/O anyway using old-style disk.
> We get something like 2.000 I/O per sec when hammering on one
> of the allocated disks. 4-5 time more then the old HSZ/HSG
> controllers.

Massively faster than a 'Z or 'G is typical of these upgrades.
It wouldn't be particularly surprising to learn that your current 
DS20E-fossil is now HBA-limited, too; that the DS8000 is waiting for 
your HBA.

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