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- Newsgroups: comp.sys.sun.hardware
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- From: rmilner@zia.aoc.nrao.edu (Ruth Milner)
- Subject: Re: Sun's SCSI Target Addresses
- Message-ID: <1992Aug19.180418.5977@zia.aoc.nrao.edu>
- Reply-To: rmilner@zia.aoc.nrao.edu (Ruth Milner)
- Organization: National Radio Astronomy Observatory, Socorro NM
- References: <1992Aug14.043144.9990@i88.isc.com> <1992Aug17.151826.10568@emr1.emr.ca> <4914@calmasd.Prime.COM>
- Date: Wed, 19 Aug 92 18:04:18 GMT
- Lines: 22
-
- In article <4914@calmasd.Prime.COM> gdh@calmasd.Prime.COM (Gerald Hall) writes:
- >In article <1992Aug17.151826.10568@emr1.emr.ca> craven@cg.emr.ca writes:
- >>I would also like to know the mystery behind the addressing scheme of Sun's
- >>SCSI disks.
- >
- >Making target 3 sd0 actually makes some sense to me in terms of
- >internal and external drives on Sun workstations. Many of our external
- >drives are not easily jumpered to change the drive target number
- >and these are all set (with no jumpers) target 0.
-
- Yeah, but if this was the logic behind it, they ought to have just shifted
- everything by one after that, instead of doing a straight swap of 0 and 3.
- Under the current scheme, if you connect your new disk at target 0, the
- default kernel configures it as sd3. So then you have sd0 and sd3 and nothing
- in between. Yuck!
-
- Only the oldest drives are difficult to change, and even then you usually
- only have to take the cover off and move a couple of jumpers. Lately I have
- started requiring external SCSI ID select on all our desktop drives.
- --
- Ruth Milner NRAO/VLA Socorro NM
- Computing Division Head rmilner@zia.aoc.nrao.edu
-