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- Path: sparky!uunet!haven.umd.edu!umd5!gotail.umd.edu!BLEAU
- From: bleau@umdsp.umd.edu
- Newsgroups: comp.sys.dec
- Subject: VS3100-76 SCSI question
- Message-ID: <17869@umd5.umd.edu>
- Date: 8 Jan 93 22:48:28 GMT
- Sender: news@umd5.umd.edu
- Reply-To: bleau@umdsp.umd.edu
- Organization: University of Maryland Physics Dept.
- Lines: 34
-
- Hi, netters. I have a couple of questions about the VAstation 3100 model 76.
- I have one of those beasties with a 2nd SCSI bus. It currently has a RZ23
- system disk on the 1st scsi bus. The 2nd scsi bus has a TZ30 cartridge tape
- drive, an external optical drive and winchester drive, and an X.25 receiver
- that uses a scsi id, leaving only 3 scsi id's on that bus.
-
- 1) I just found out that the 1st SCSI bus on teh VS3100-76 is internal only
- and can't be extended beyond the system box. That limits me in that all my
- additional scsi devices have to go on the 2nd bus. Can anyone confirm or deny
- this statement? I got it from DEC, btw, but you never know. Also, is there a
- non-DEC way of feeding it to the outside world?
-
- 2) I was warned by a 3rd party disk vendor to stay away from SCSI id 7. He
- said that DEC has their cpu at scsi id 6, and that some devices will work at
- scsi id 7, but they get a little flakey, and he gave the impression that it'd
- be a bad idea to depend on devices at that id. He also mentioned that this bug
- was fixed in the VS4000-60. Can anyone confirm or deny this bug, and give more
- specifics on it? Also, can you comment on if it has really been fixed, or is
- it still lurking; ie, am I safe in putting scsi devices (or even the scsi
- adapter) at scsi id 7?
-
- 3) I was told the the VS3100-76 only has scsi-1, not scsi-2. If I buy a
- disk drive with a scsi-2 interface, what can go wrong if I attach it to the
- scsi-1 adapter on my system?
-
- 4) I have an internal TZ30, but it's on the 2nd scsi bus. Is there a way I
- can put this on the 1st scsi bus? Some special, but easy to get, cable maybe?
- If you have a part number, that'd be great (are you listening, DEC field
- service?).
-
- Larry Bleau
- University of Maryland
- bleau@umdsp.umd.edu
- 301-405-6223
-