cp-v at the LCM, system and swapping on 300MB packs.
On Sun, Jun 4, 2023 at 3:16 PM P Gebhardt via cctalk <cctalk@classiccmp.org> wrote: > Hi Rod, > > I don't blame them either! Operating these drives means having access to > spare heads, alignment equipment and and alignment pack - not taking into > account the work to be put in all of this! > Anyway, thanks for sharing your anecdote with us :) > Greetings, > Pierre > > > >I can't say I blame them. It was a lot of work to get a drive running > after a head crash. If it was a bad crash, there >could be extensive > cleaning to be done followed by replacing one or more heads. Then the new > heads had to be >aligned. If you hadn't cleaned thoroughly enough, you > risked damaging the expensive alignment disk. > > > >Once I came back from lunch to see the operators had 3 drives open. They > kept swapping a disk pack which was >giving I/O errors to new drives and > were crashing heads along the way due to the damaged disk pack. I stopped > >them before they spun up the pack on a 4th drive. That wasn't as bad as > the time one of them dropped a disk pack >and bent platters. That ripped > heads completely out of the mounting mechanism. > > > >Ah, the good old days! > > > >Rod > > > On Jun 2, 2023, at 2:51 AM, P Gebhardt via cctalk <cctalk@classiccmp.org> > wrote: > > > > Hi all, > > > > I just came across pictures on the LCM website about their SDS Sigma > installation there. > > On the pictures, one can see 10-platter disk packs in the corner and > stored on the disk drives. > > Did the LCM ever had these in operation, either for data retrieval or > even demo purposes? > > I know of the Jim Austin Computer museum where they fixed a CDC 9766 > drive but it suffered > > a head crash after a few hours according to their description which led > to giving up the operation > > of these drives. > > > > Greetings, > > Pierre > > > > > ----------------------------------------------------------------------------- > > http://www.digitalheritage.de > >
