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Article #9734Re: Should this disk be so slow
From: Bob Philbin
Date: Fri, 16 Dec 1988 14:12
Date: Fri, 16 Dec 1988 14:12
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You will get poor performance on the Max 8760E if you get the sector jumpers wrong. I installed one on Sun 3/160C with the Emulex MD21 and saw the same problem until I: * Removed JP 31 ; the manual is unclear but with this in, the drive is set up for soft sectors. It is a miracle that it works at all this way, but it does. Very slowly. * Set the sector size jumpers to JP 25, 22, 20, 19, and 18. This makes the drive use 604 bytes per sector. This gives you about 52 sectors/track. You will actually use 51. * Reformatted the drive: 1624+3/15/51, 1-1 interleave. The above setup works for a drive with a firmware rev of A.18. I had to use MD21 firmware rev A98DX04 to get anywhere with the Maxtor. Save your old MD21 PROM; you will need to use it if you ever have to reformat the Micropolis (or Toshiba). Bob Philbin Nicolet Biomedical Instruments Madison, WI
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!ncrlnk!ncr-sd!hp-sdd!hplabs!ucbvax!husc6!rice!sun-spots-request From: nicmad!philbin%astroatc.UUCP@cs.wisc.edu (Bob Philbin) Newsgroups: comp.sys.sun Subject: Re: Should this disk be so slow Message-ID: <2342@kalliope.rice.edu> Date: 16 Dec 88 14:12:48 GMT Sender: usenet@rice.edu Organization: Sun-Spots Lines: 22 Approved: Sun-Spots@rice.edu Original-Date: Wed, 7 Dec 88 08:50:10 CST X-Sun-Spots-Digest: Volume 7, Issue 60, message 5 of 14