Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!henry From: henry@utzoo.UUCP (Henry Spencer) Newsgroups: hacknews Subject: disk follies continue Message-ID: <2994@utzoo.UUCP> Date: Fri, 27-May-83 16:15:27 EDT Article-I.D.: utzoo.2994 Posted: Fri May 27 16:15:27 1983 Date-Received: Fri, 27-May-83 16:15:27 EDT Organization: U of Toronto Zoology Lines: 15 Based on tests run yesterday, it now appears that the source of our long-standing problems with the old drive may well have been the pack(s) rather than the drive. Our old Memorex packs seem to be in lousy shape, with a strong suspicion of servo-surface damage. The standalone drive diagnostics run just fine on the old drive using one of Terabit's Dysan scratch packs, but they really choke on one (either one) of our old packs. The only serious test left to be run is to try moving our current production pack (the new Dysan) to the old drive. If we run on this for a while with no problem, QED. We'd tentatively planned to do this sort of thing anyway, to assess whether all the old drive's problems had been fixed. Pack switch (and the minor bit of cable shuffling to make the old drive drive #0 again) will probably be done during Monday backups.