Greetings everyone:
I've been in the process of adding a second hard drive and updating software
on my two Ultra 5s, and I wonder if anyone has come up against this problem
before: I've added a second Seagate drive to one of the U5s, and installed
Solaris 9 on it. However I cannot get both drives to be recognized at the
same time, sharing the same cable using the "cable select" mode. Both drives
and operating systems work fine independently (the oem Seagate is still
operating under 2.6), but no matter which drive is cabled as master and
which as slave, only the master is recognized. (By recognized, I refer to
being mounted or picked up by the unix "format" routine.)
Prior to this install, I was successful in doing the exact same thing my
other Ultra 5, except in this case the second drive that was installed was a
Western Digital. I've talked to both Sun and Seagate; Seagate says its
probably the software or motherboard, while Sun didn't really have a clue
why it didn't work. The two U5's were purchased together, so presumably they
have the same motherboards and bios (or whatever unix uses). And indeed the
Western Digital works and both drives are recognized when installed in the
"problem" U5. My guess is the reason the Western Digital/oem Seagate combo
works is that the Western Digital does NOT have a cable select setting,
instead both of these drives have a "Master w/ slave" and "slave only"
jumper setting, which is how I must set it up. On the other hand with the
new Seagate/old Seagate tandem I must use the cable select jumper setting
since the new Seagate does not have a master w/slave choice.
Which comes down to my first question....maybe the ATA controller on the
Ultra 5 does not support the Cable select mode? Has anyone of you
successfully incorporated a second hard drive as either master or slave on
the same cable using cable select?
Ultimately I really don't need both drives present at the same time on this
second Ultra, however with the first Ultra, the ability to have both drives
mounted made it easy to pick and choose the /export/home/directories I
wanted to tar over to the new drive. (Currently on this Ultra, the original
seagate operates 2.6 and VNMR 6.1b, while the Western boots off 2.9 and has
6.1C installed and is the master)
The second question is if I can't get these two Seagate drives to share the
same cable in cable select mode, is it possible to use the CDROM slot on the
motherboard for a hard drive (at least on a temporary basis)? I tried this,
but it doesn't seem to recognize the drive, although I figure I might need
to change some statement/file somewhere for the software to acknowledge a
drive in the cdrom slot. Has anyone tried this?
Thanks for your responses and comments; I'll post a summary if warranted.
Neal
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Neal J Stolowich, PhD
Manager
ULNMR Facility Office: 502-852-7894
Department of Chemistry Fax: 502-852-8149
University of Louisville
Louisville, Kentucky 40292
Received on Mon Sep 22 2003 - 17:02:25 MST