The SHARE1 is on the plastic insert label designed for the purpose. Usually it would be the IBM OS Volume Serial number. The pack in the photo may have contained stuff that originated with the IBM SHARE user group, or perhaps the pack was used on a drive shared between two systems. The painted on number is unusual, and may be a Julian date, from 2005, perhaps from a repair, though that would be pretty late for this kind of removable disk pack.
Packs like this were exposed every time the pack was mounted or dismounted from the drive, when the cover was pulled off with the drive door yet to be closed. Many such drives ran a set of brushes over the pack surface as the drive spun up, before loading the heads. Sent from my iPad Sent from my iPad > On Sep 1, 2017, at 02:25, Paul Birkel via cctech <cct...@classiccmp.org> > wrote: > > I'm afraid that I can't help. But I notice that in the upper-band of the > glare there appears to be a lot of speckling of the oxide surface. Is this > to be expected in a heavily-used disc-pack, or does it indicate surface > damage -- and if so then what are the likely causes? > > Also, was it usual to place markings/labels on the lower-ring like this -- > both what appears to be one that is painted-on "NEWUC:2005.47" as well as the > (plastic covered?) insert "SHARE1"? > > -----Original Message----- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of AJ Palmgren > via cctalk > Sent: Friday, September 01, 2017 3:08 AM > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: IBM 3330 Drive > > For reference, here is a picture of the disk pack that I am wanting to > read. > > http://bit.ly/2etUg30 > > I know, I got a bit nervous too when I saw the guy just holding it out > exposed like that. Let's hope he put it back in the canister very > carefully and quickly. > > Can anybody guess the correct model of disk pack from this single picture > and angle? (Sorry, it's all I have to go on right now). > > Thanks! > -AJ > > > On Mon, Aug 28, 2017 at 11:16 AM, Tom Gardner via cctalk < > cctalk@classiccmp.org> wrote: > >> FWIW Paul Alan's Living Computer Museum has (or had) working PDP10's using >> DEC’s RP06's <http://opac.libraryworld.com/opac/catalog_edit.php?catalog_ >> id=230824&from_doc=standard.php&position=43> which are very similar to a >> 3330-11 (they are Memorex 677's with a bolt on DEC controller). They will >> not mount a 3330 disk pack (3336) but they should mount a 3336-11 disk pack >> and probably spin it up but DEC’s fixed sector size will be an issue. I >> seem to recall u could format IBM 3336-11 packs into the DEC format so u >> might actually be able to scan a full track without reformatting >> >> >> >> I know of no operational 3330 or PCM equivalents (e.g. Memorex 3670, >> ISS/Itel 7330, etc); the Computer History Museum purports to have one, >> Catalog Number L2006.1.5 <http://www.computerhistory. >> org/collections/catalog/L2006.1.5> , but it might be a -11. It probably >> would power up and u probably could get it to seek and read (u would need a >> simple controller) but getting access from the museum would be a challenge. >> >> >> >> Good luck. >> >> >> >> Regards >> >> >> >> Tom >> >> >> >> -----Original Message----- >> From: AJ Palmgren [mailto:microtechd...@gmail.com] >> Sent: Sunday, August 27, 2017 9:42 PM >> To: General Discussion: On-Topic and Off-Topic Posts >> Subject: IBM 3330 Drive >> >> >> >> Does anyone here have good technical experience with, or even better >> ACCESS to, an IBM 3330 compatible hard drive unit? (working or not). >> >> >> >> I'm getting more daring with my projects to attempt to read ancient >> magnetic flux transitions off of things, and I might have an opportunity to >> read a disk pack for one of these beauties. >> >> >> >> I'm certain there are MANY obstacles to overcome with what I'm suggesting, >> and depending on what might be available, I'll tackle those one at a time >> as I cross those bridges. But for now, I'll just ask about the hardware. >> >> >> >> -- >> >> >> >> Thanks, >> >> AJ >> >> <http://QICreader.com> http://QICreader.com >> >> <http://Point4iris.com> http://Point4iris.com >> >> <http://MightyFrame.com> http://MightyFrame.com > > > -- > > Thanks, > AJ Palmgren > http://fb.me/SelmaTrainWreck > https://www.facebook.com/profile.php?id=100010931314283 > https://www.linkedin.com/in/aj-palmgren-4a085516/ >
