Many thanks to those who replied either to my posting or to my direct
mail about their posting.
The consensus is that it is a hardware problem. Since I get the same
symptoms with 4 disks in separate cabinets with two different cables and
three different terminators (active and passive) and on fast and slow
speed, I am beginning to suspect the alpha box. I am getting an upgrade
with another internal disk soon, so I will check with the DEC folks
when that happens and report back if anything more concrete is revealed.
Thanks again to all for help.
%%%%%%%%%%%%% Original Question %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
I have been trying to add older SCSI drives (2 Maxtor 8760S's and 2
Seagate ST41200N's (one at a time)) to my alpha 200 4/100 in external
cabinets and failing miserably.
I have been following the path described in older mailing list discussion
(namely 1. SUMMARY: Wanted: Disktab Entry for Seagate ST41200N from
Jeff Nelson (jeffn) 12 Jan 96 and 2. SUMMARY: RZ29B from Daniele Fua
(fua) 19 Jan 1996) as well as the dxbook entry 6.3 Adding Disk and
Drives.
I can go through it all and get the disk formatted and write to it BUT,
the capacity is only ~50% of what it should have, and the data written
to the drive get corrupted pretty quickly although they may be ok for
one or two reads. A fsck -o of the drive picks up tons of errors, even
right after I create the newfs.
Disklabel shows the wrong capacity as well as the wrong (low)
sectors/track. My attempts at editing these (disklabel -e) have not
been successful. The disks have been tried on a short (3 ft) cable
with active and passive terminators. I have tried setting the bus
speed to slow (pka0_fast = 0) and remaking the kernel - still no joy,
but my limited on line and hard copy documentation does not make it
clear whether there should be changes made manually to a configuration
file.
The documentation says when there is a device hooked on to the external
SCSI bus the external (inside the alpha box) termination is
automatically disabled. Could this be acting up?
Does anybody have any ideas that I might try?
Thanks for any help and SUMMARY promised.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--
_______________________________________________________________________
|David A. Greenberg email d_greenberg_at_bionet.bio.dfo.ca |
|Bedford Institute of Oceanography |
|P.O. Box 1006 phone (902) 426-2431 |
|Dartmouth, Nova Scotia fax (902) 426-7827 |
|CANADA B2Y-4A2 home (902) 865-7511 |
_______________________________________________________________________
Received on Tue Apr 02 1996 - 14:33:07 NZST