I'm glad you had a good experience, but it greatly depends on the system,
which controller card is in there and which disk it controls. If it happens
to be the card where the battery slides out the back, (and the battery has
not bloated so far that it can get out without being manhandled) then your
experience might happen, but I'll bet against it.

We don't know from the OP which controller card it is, if it's even
accessible from the back of the unit or the shape of the batteries. From
the description I'm strongly guessing it's an older card (which has the
batteries on the card not in the little bay at the back) so the card must be
removed to change it out.

The CE would not require a console if the batteries could be replaced
concurrently. Besides that it's really bad practice to have a system
without a console anyway so bite the bullet and get it done.


--
Jim Oberholtzer
Agile Technology Architects


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Justin Taylor
Sent: Friday, August 25, 2017 8:40 AM
To: Midrange Systems Technical Discussion
Subject: RE: Cache Battery

That disagrees with my experience six days ago.


-----Original Message-----
From: Jim Oberholtzer [mailto:midrangel@xxxxxxxxxxxxxxxxx]
Sent: Friday, August 25, 2017 8:02 AM
To: 'Midrange Systems Technical Discussion' <midrange-l@xxxxxxxxxxxx>
Subject: RE: Cache Battery

Jerry:

The CE needs to take the system to a restricted state, and will most likely
power down the system, that's the reason for needing the console. That's
to be sure the cache is cleared before the batteries are changed. Besides
that I'll bet that card controls all the DASD (or at least the load source)
so, when the card is pulled to change the battery, the system will go down
hard anyway if it's not brought down nicely.

Yes, a console is a requirement.

DEGRADED most likely means the cache is turned off due to the days count on
the batteries. System runs but very slowly.
--
Jim Oberholtzer
Agile Technology Architects



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