4 Jun
2023
4 Jun
'23
7:07 p.m.
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(a)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(a)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
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