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- Newsgroups: comp.sys.sun.hardware
- Path: sparky!uunet!boulder!colorado.edu!ejh
- From: ejh@khonshu.colorado.edu (Edward J. Hartnett)
- Subject: problem with a ex-sun scsi disk now on a pc
- Message-ID: <EJH.92Nov18162331@khonshu.colorado.edu>
- Sender: news@colorado.edu (The Daily Planet)
- Nntp-Posting-Host: khonshu.colorado.edu
- Organization: CIRES, University of Colorado
- Date: 18 Nov 92 16:23:31
- Lines: 37
-
-
- We had, until recently, a hard disk on our Sun which was about 150
- Mbytes. Then we took it off the Sun (got a 1.2 GB drive instead :) and
- now my boss would like to hook it up to his 486 machine, for which he
- just bought a scsi card. But he's having problems. The disk formatted
- OK and the disk test routine provided by the scsi board company
- reveals no problems and yet when he tries to do disk operations it
- sometimes hangs the system.
-
- Can anyone shed some light on the subject? For more details, here's
- the message he sent me about this:
-
- ...seems to think that the problems I've having with the disk
- (it hangs randomly, crashing system) is due to Sun not conforming to
- some scsi standards.
-
- The unit is: EMULEX MD21/S2 ESDI A00. The things
- that might be wrong:
- 1) motor startup power must be enabled
- 2) terminal power must come from device not bus
- 3) disk is formatted with 1024 byte sectors, must be 512 byte sectors
- Hoop doesn't believe #3, says all unix disks have 512 byte sectors, but
- says he could be wrong.
-
- I talked to our sevice guy, who used the service this disk while it
- was on the sun, and he gave me a breif verbal description of the
- meansing of the bank of dip swithes on the thing. The only thing that
- sounded useful was that switch 5 controlled the data rate somehow, and
- switch 8 was for parity. I never heard of parity checks for data
- coming from a dask, but I guess it sounds reasonable. It's off now.
-
- If anyone could shed any light on this, I would be most appreciative.
- The SCSI card is Allways Technology IN-2000. The PC is a generic 33
- MHz 486.
- --
- Edward Hartnett ejh@khonshu.colorado.edu
-
-