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- From: mikebo@i88.isc.com (Michael Borowiec)
- Subject: Re: HELP with 4/490 SCSI Device IDs for SCSI disk drives.
- Message-ID: <1992Aug14.043144.9990@i88.isc.com>
- Sender: usenet@i88.isc.com (Usenet News)
- Nntp-Posting-Host: genesis.i88.isc.com
- Organization: INTERACTIVE Systems Corporation, Naperville, IL
- References: <1992Aug12.142412.15112@Princeton.EDU>
- Date: Fri, 14 Aug 1992 04:31:44 GMT
- Lines: 64
-
- In article <1992Aug12.142412.15112@Princeton.EDU> stz@phoenix.Princeton.EDU (Stephen Zehl) writes:
- > Sun does not recommend putting SCSI disk drives on the SCSI bus of a
- >4/490, but everyone else has told me that there is no problem with doing it.
- >I have been unable to find anything to help me set the SCSI device IDs of the
- >drives. Does anyone have multiple SCSI drives hanging off a 4/490 that could
- >tell me the SCSI device IDs they used and what what drive device that is
- >associated with. for example, here are the settings for a Sparc2s internal
- >drives:
- >
- > Drive Number SCSI Device ID Drive Device
- > ------------ -------------- ------------
- > 1 3 sd0
- > 2 1 sd1
- >
- >
- > Also, how many drives can I daisy chain off of the SCSI bus, I already
- >have 2 tape drives and a cdrom on it.
- >
- > Thanks.
- >
- >Stephen Zehl
- >Systems Admin. Princeton University Cognitive Science Lab
- >Princeton, NJ
- >sz@clarity.princeton.edu
- >
-
- Well, I have 3 VME SCSI boards in our 4/490 with up to 4 1.2GB drives
- on each SCSI bus. Theoretically you could easily configure up to seven
- SCSI drives on each bus, although performance may suffer if you're
- hitting on several of them at the same time...
-
- Here is the SCSI portion of my kernel config file:
- #
- # Support for the SCSI-3 host adapter and the on-board SCSI controller
- # on several machines (e.g. 3/50).
- #
- controller si0 at vme24d16 ? csr 0x200000 priority 2 vector siintr 0x40
- controller si1 at vme24d16 ? csr 0x204000 priority 2 vector siintr 0x41
- controller si2 at vme24d16 ? csr 0x208000 priority 2 vector siintr 0x42
- tape st0 at si0 drive 040 flags 1 # QIC150 SCSI ID: 4
- tape smt0 at si0 drive 050 flags 3 # ST-8mm SCSI ID: 5
- disk sr0 at si0 drive 060 flags 2 # CD-ROM SCSI ID: 6
- disk sd0 at si0 drive 000 flags 0 # BUS: 0 SCSI ID: 0
- disk sd9 at si0 drive 010 flags 0 # BUS: 0 SCSI ID: 1
- disk sd1 at si1 drive 000 flags 0 # BUS: 1 SCSI ID: 0
- disk sd2 at si1 drive 010 flags 0 # BUS: 1 SCSI ID: 1
- disk sd3 at si1 drive 020 flags 0 # BUS: 1 SCSI ID: 2
- disk sd4 at si1 drive 030 flags 0 # BUS: 1 SCSI ID: 3
- disk sd5 at si2 drive 000 flags 0 # BUS: 2 SCSI ID: 0
- disk sd6 at si2 drive 010 flags 0 # BUS: 2 SCSI ID: 1
- disk sd7 at si2 drive 020 flags 0 # BUS: 2 SCSI ID: 2
- disk sd8 at si2 drive 030 flags 0 # BUS: 2 SCSI ID: 3
-
- Although Sun only *supports* two SCSI buses in a 4/490, it was a simple
- matter to jumper the third board and use the above config information to
- make the proper kernel. I can't figure out why Sun insists on setting sd0
- to SCSI address 3 in the GENERIC file, but it isn't at all necessary.
- - Mike
-
- --------------------------------------------------------------------------
- Michael Borowiec (N9EUZ) - mikebo@isc.com - mikebo@timesink.chi.il.us
- INTERACTIVE Systems Corp. - 1901 N. Naper Blvd. - Naperville, IL 60563 USA
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