I remember a couple HDA failures caused by the raised floor layout. The cold air was venting up directly beneath the 3380's and was too cold. It caused the grease in the bearings to thicken.
Brian Nielsen On Mon, 9 Mar 2009 19:57:47 -0500, Marcy Cortes <marcy.d.cor...@wellsfargo.com> wrote: >I could have written the exact the same story - just need to strike the >"and TPF" words and the word airline.. Ah if only we had this IBMVM >list back then, we could have commiserated together. The most fun was >losing the volume with the directory on a Friday afternoon. > >Nowadays, none of that fun. Just microcode !! > > >Marcy > > >"This message may contain confidential and/or privileged information. If >you are not the addressee or authorized to receive this for the >addressee, you must not use, copy, disclose, or take any action based on >this message or any information herein. If you have received this >message in error, please advise the sender immediately by reply e-mail >and delete this message. Thank you for your cooperation." > > > >________________________________ > >From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On >Behalf Of Schuh, Richard >Sent: Monday, March 09, 2009 4:45 PM >To: IBMVM@LISTSERV.UARK.EDU >Subject: Re: [IBMVM] Must be Friday: Mainframe USBs! > > >I haven't experienced a failure of an HDA since the days the airline >only allowed VM to have 3380-A04 and -B04 devices that were >hand-me-downs from MVS and TPF. It took a week of 7 HDA failures during >the 5 day work week, all housing critical data, before they finally >bought new DASD for VM. I think most of the replacement HDAs were >cannibalized from devices sitting on the loading dock waiting for >someone to haul them away. One died less than an hour after we finished >a restore. No big deal, it only took 6.5 hours to do that restore.. > > >Regards, >Richard Schuh > > > > > > >________________________________ > > From: The IBM z/VM Operating System >[mailto:ib...@listserv.uark.edu] On Behalf Of Dave Wade > Sent: Monday, March 09, 2009 4:27 PM > To: IBMVM@LISTSERV.UARK.EDU > Subject: Re: Must be Friday: Mainframe USBs! > > > > I remember having a 3370 (I think) replaced on a 4331. The CE >said the reason the MAP ran for so many pages was that the Head and >Drive assembly (HDA) was the most expensive part of the drive, so the >Diagnostic floppy would exhaustively test every component before it >failed the Head and Drive Assembly. He was pretty sure it was the HDA >and arrived with one, which was left to acclimatize (I think it needed 4 >hours) while he ran through the MAP. > > > > Glorious days, > > > > Dave Wade G4UGM > > Illegitimi Non Carborundum > > > > -----Original Message----- > From: The IBM z/VM Operating System >[mailto:ib...@listserv.uark.edu] On Behalf Of David Boyes > Sent: 09 March 2009 15:47 > To: IBMVM@LISTSERV.UARK.EDU > Subject: Re: Must be Friday: Mainframe USBs! > > > > The 308x had a FBA device for the support processor to use. >Wasn't customer accessible, though. > > I remember helping a CE replace one once when it failed on a >3081D. Messy. The MAP ran for tens of pages. > > > On 3/9/09 11:42 AM, "Edward M Martin" <emar...@aultman.com> >wrote: > > I believe that the 3090 or something similar. > It has been awhile since the CE and I talked about devices. >======================== ========================= =======================
