Re: Running AS/400 with cover off and care of Drives -- MIDRANGE-L

Hi,
I use to work for am IBM business Partner in Central America who replaces
completely IBM (They left CA in 1992) as an AS/400 SE.    As I recall, there
was a batch of 6606's that had serious problems.  IBM sent us a batch a new
6606's to replace the ones that they had installed in Guatemalan machines.
We had to change 25 of them.  I don't have the information anymore but it
was a batch of disk produced on Rochester in 2 months period.  Maybe you can
contact your IBM representative and ask for a list of serial numbers of this
disk's and replace them ASAP.

Emilio Padilla

----- Original Message -----
From: "DAVID BULOG" <d2ba@xtra.co.nz>
To: <MIDRANGE-L@midrange.com>
Sent: Domingo 4 de Junio de 2000 04:57 AM
Subject: Re: Running AS/400 with cover off and care of Drives


> Thanks Adam,
> Obviously there is a serious problem with a batch of the 6606s.
> I suspect only went out in your local US Market.What you described to me
was
> a production fault--a failure on first ever powerdown quite different from
a
> normal wear and tear cold start problem.
>
> --I would be tempted to get IBM to change all the 6606 disks as clearly
you
> have been sold a bad batch
> I have left my Model 500 powered down for 2  weeks once  and touch wood no
> problems yet!
>
> cheers Dave
>
> -----Original Message-----
> From: Adam Driver <adam_driver@yahoo.com.au>
> To: MIDRANGE-L@midrange.com <MIDRANGE-L@midrange.com>
> Date: Wednesday, 7 June 2000 17:22
> Subject: Re: Running AS/400 with cover off and care of Drives
>
>
> >David,
> >
> >We have model 6606 and 6607 disks, and yes, we've had
> >problems with extended power down time. We generally
> >do a scheduled IPL with RESTART(*YES), so the disks
> >don't stop spinning. However, a couple of months ago
> >we had to power down for a couple of hours due to a
> >combination of a mains power failure and our backup
> >generator also failing. After being off for about 4
> >hours we powered up the machine and 3 disks wouldn't
> >start. We got an IBM hardware tech out and he fixed 2
> >of them by blowing on them and tapping them on the
> >floor. The third had to be replaced. The one replaced
> >was a 6606. Can't remember whether the other 2 were
> >6606's or 6607's. The IBM tech pretty much said the
> >same to me that your friend did. We have a test AS/400
> >with 6714 disks that has been powered down for days at
> >a time sometimes. We've never had a problem with these
> >disks when it's restarted.
> >
> >Thanks
> >
> >
> >--- DAVID BULOG <d2ba@xtra.co.nz> wrote: > Hi list,
> >> I was wondering if you can advise me as to whether I
> >> should
> >> be running my Model500 with the rounded rear cover
> >> on or off.
> >> I could find no specific IBM reference as to what is
> >> the correct way but am
> >> I correct in assuming that I should run with the
> >> rear cover attached as this
> >> acts as a shield to circulate the air back towards
> >> the cards etc.
> >>
> >> Another question is Harddrive care--my model 500 has
> >> 18gig total
> >> 2 x 6606, 2 x6607, 1x 6713.Are any of these models
> >> prone to sticking after
> >> long powerdwn periods.
> >> Since I have the machine at home for the purpose of
> >> playing with the project
> >> lightening toolkit I only powerup one day a week for
> >> aboubt 4 hours at a
> >> time--How much of a risk Im I taking--I know
> >> Quantem SCSIdrives on PCs are really bad,but IBM
> >> drives are
> >> much more reliable(I only use SCSI Ultrastars on my
> >> PCs and have
> >> never had a failure--they get a real thrashing to!
> >> What I dont know is how good the AS/400 drives are
> >> compared
> >> to the IBM ultrastar PC drives,I have heard a rumor
> >> that the AS/400s are top
> >> end Ultrastars with a special logic board??
> >>
> >> My friend Andree says you should never
> >> powerdown because spinning the drives does not cause
> >> the wear and tear its
> >> the cold starts--in fact he almost guarentied in
> >> theory that if you left a
> >> brand new or near new IBM drive in its box for years
> >> it would be useless as the bearings would be
> >> stuck--stranglely
> >> enough he has recovered data for clients by carefuly
> >> taking apart and
> >> spinning by hand to give a quick start and then
> >> transfering the data on to
> >> another drive and throwing the damaged one away
> >>
> >> Dave
> >>
> >> +---
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> >> +---
> >
> >
> >=====
> >Adam Driver
> >AS/400 Systems Support Specialist
> >
>
>___________________________________________________________________________
> __
> >http://movies.yahoo.com.au - Yahoo! Australia & NZ Movies
> >- Find out what's on at the local cinema with Yahoo! Movies
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+---
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