Summary:
There do appear to be a range of problems with
TZ family devices, and the KZP-AA controllers. Intermittant
SCSI failures, which dump/restore can't handle.
dumping from fast/wide to narrow is going to be
a problem. eg RAID to TZ88, TZ09/autoloader.
TZ89 on differential seems ok.
no real fix. Some observations:
some TZ devices work better if you force-override
compression on the front console buttons
KZP-DA work fine. Makes for some interesting issues
in packaging up the devices and controller combos
(need new personality module in the scsi box for
instance, cabling options.)
using dd and other s/w throttles may prevent the bus
being flooded, at severe cost in speed of tape activity.
If you want to lodge calls with DEC support/engineering:
1) make sure your tape device is on current
spec microcode. As long as you can cut the tape, its
a simple upgrade.
2) install DEC Event and use dia -o full to
produce error logs. uerf is no longer
'supported' by DEC engineers for troubleshooting
DEC Event is on version 2.6 which is newer than
the code on the 4.0B CD's most of us have. the
engineering site has the newer versions:
http://www.service.digital.com/dsnlink/
cheers
-George
Received on Wed Jan 07 1998 - 00:42:53 NZDT