Re: Since when is adding DASD so difficult?

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Pam,

In a message dated 6/6/02 11:44:53 AM Eastern Daylight Time,
pam@medisense.com writes:


> We have a Model 720 on V4R4. All the bays in both the system unit and the
> expansion unit are filled with 8 GB drives, giving us a total capacity of
> about 300 GB. We need to add about 100 GB. I had thought the obvious
> solution
> would be to add another expansion unit and add in some 17 GB drives.
> Simple,
> right?
>
> I am told that the current technology for expansion, a PCI tower, requires
> V4R5.
> The next option is swapping 8 GB for 17 GB drives in place. This means a
> lot
> of planning to cover the risks.
> Another possibility would be to get a used SPD tower, which may need to be
> discarded when we finally do upgrade our OS.
>
> What's your feeling on these options? Do you have any other suggestions?
>

Sorry to be so late to the game, but I've been busy working on a variation of
your problem this week.  My current primary client is running V4R5.  With all
due respect to those that want V5R1 or 2, upgrading a P30 or 40 system is a
bit pricey and requires a great deal of testing -- especially in the
pharmaceutical industry.

What we are doing is installing a new 830 as a production machine to replace
the current production 830 -- 4 processor P40 as opposed to the current 2
processor P30.  Once we've verified that the new machine is working properly,
the current development 720 will have its processor yanked and become an
expansion cabinet to the current production 830 in order to support SPD
devices (this SPD's for you!) already in house.  All systems will be running
V4R5 until we come up with the time in our busy schedule to test V5R1 on our
development box.  The "new" 830/720 hybrid will be partitioned so that
development will be in its own LPAR with HA in the primary, thus allowing
testing of the new OS without impacting our high availability system which is
currently running to the unpartitioned 720.  No solution to your V4R4
problem, but...

HTH,

Dean Asmussen
Enterprise Systems Consulting, Inc.
Fuquay-Varina, NC  USA
E-mail:  DAsmussen@aol.com

"Beware of programmers bearing screwdrivers."  -- Old CrossTalk Saying