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

Thanks Emilio, I'll do that.



--- Emilio Padilla Taylor <epadilla@amigo.net.gt>
wrote: > 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
> > >>
> > >> +---
> > >> | This is the Midrange System Mailing List!
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> > >> +---
> > >
> > >
> > >=====
> > >Adam Driver
> > >AS/400 Systems Support Specialist
> > >
> >
>
>___________________________________________________________________________
> > __
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> 
=== message truncated ===


=====
Adam Driver
AS/400 Systems Support Specialist

_____________________________________________________________________________
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