te@rhi.hi.is (Tryggvi Edwald) (08/26/88)
Reply-to: te@rhi.hi.is (Tryggvi Edwald)
A year ago somebody posted vital information on how to `fix' a hard disk
not bought from DEC, so that it could be used on a microVAX II. (The disk
in question was the exact same model as DEC used in said machine, minus one
simple jump-wire.) I have run out of disk space again, and last year's disk
is not available to me now. Prices have not gone down at DEC. Can anyone
(hard disk makers perhaps?) supply information on how to fix other disks,
preferably of common makes, to work with Ultrix/microVAX II? Our Ultrix is
V1.2A, we are waiting for V2.4 before we upgrade. We are looking for disks
in the size range 100-350 Mb.
Please send e-mail or post as you see fit.
Thanks.
Tryggvi Edwald e-mail: te@rhi.hi.is (on mcvax)
s-mail: Islensk Malstod, Aragotu 9, 101 Reykjavik, Iceland
"Down with sneaky tricks like secret jumpers!"kg@elan.UUCP (Ken Greer) (09/08/88)
Reply-to: kg@elan.UUCP (Ken Greer) >From article <55483@felix.UUCP>, by te@rhi.hi.is (Tryggvi Edwald): > Reply-to: te@rhi.hi.is (Tryggvi Edwald) > > A year ago somebody posted vital information on how to `fix' a hard disk > not bought from DEC, so that it could be used on a microVAX II. (The disk > in question was the exact same model as DEC used in said machine, minus one > simple jump-wire.) I have run out of disk space again... I save everything! ... | I am trying to put a generic Micropolis model 1325 hard disk on | a MicroVAX (this drive is exactly what DEC uses on the MicroVAX for | its 67 meg hard drive). Unfortunately, the drive, as jumpered from | the factory doesn't work (it won't format etc.). Could someone | tell me how to modify this drive so that it'll be compatible with | the MicroVAX controller? | | You need to install a jumper in place of R7 on the drive's logic | board. I have done this a number of times with the RQDX2 and RQDX3 | controllers and it seems to work quite well. The cost savings is | enormous. We've gone to larger disks on our MicroVax. We're currently using three Maxtor 4380 disks with a Dilog DQ686 controller. Works without any modifications whatsoever. The Maxtor disks are 5.25 inch winchesters with a capacity of 380MB unformatted each. Prices for the 4380s currently hover around $2500 each. Caveat: The full model name that you should buy is the Maxtor XT4380E (that's the ESDI version). The older model of this drive is EXT4380 (notice the E is in a different spot.) The EXTs should be avoided as they are known to be flakey. Make sure you get the XT4380E only! -- Ken Greer Elan Computer Group, Inc. {ames,hplabs}!elan!kg 415-322-2450