OT - DDS-2 drive errors on Microvax 3100, VMS 7.3

From: Bob Lafleur <bob_lafleur_at_technologist.com>
Date: Tue Jun 18 08:37:05 2002

It seems like we get a lot of VMS questions here, which probably doesn't
really fall directly under the list rules. I'm guilty of it too. But
there's so much knowledge here, it's hard not to ask. If anyone can
point me in the direction of an active VMS mailing list, I'll ask my VMS
questions there instead. And if there's not one, I'd consider setting
one up if there happens to be any mailing list software that works with
Exchange Server 2000.
 
-----
 
I've got my ARCHIVE Python (model 4326) DDS-2 drive connected to my
MV3100. It is connected to that machine only (I don't have it
dual-connected, as discussed in another message thread) and it's on my
2nd SCSI controller chain. When I first boot the system, the first
restore I do from tape I get this message:
 
$ backup mkb100:rob/save *.*
%MOUNT-I-MOUNTED, ROB mounted on _BOB$MKB100:
%BACKUP-E-READERRS, excessive error rate reading MKB100:[000000]ROB.;
-SYSTEM-F-CTRLERR, fatal controller error
%BACKUP-I-OPERSPEC
%BACKUP-I-OPERASSIST, operator assistance has been requested
 
I then get "fatal controller error" messages whenever I try to access
the drive, until I turn it off and back on. After the above erorr, the
device shows 102 errors in SHOW DEVICE. Once the drive is turned off and
back on, it works fine from then on, with no problems.
 
If I boot the system, then turn the drive off, and back on, I *still*
get this message for the first restore I do. Then I turn the drive off
and back on, and all is OK.
 
If the first operation I do after booting is a backup TO tape, it goes
fine with no problems. But then when I try to do a restore from tape, I
still get the above error.
 
I've updated the drive's firmware to what I believe to be the latest
(28388-XXX V5.AQ). Right now I have the drive in an external enclosure
to test it. I was going to mount it internally in the MV3100, but if I
have to power the drive down to make it work, then internal mounting is
not possible. Could it be a SCSI termination problem?
 
The drive works flawlessly on my PC.
 
Thanks,
 
  - Bob
 
 
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