Paul writes:
> Thanks for all the replies. My 918LX uses the pedestrian single ended
> SCSI interface for its one and only disk currently installed. My
> space woes were somewhat abated through some aggressive inspection of
> what is actually stored on our disk;
Just to add my comments regarding "SCSI is SCSI" to those that have gone
before, I too had a 918DX that had only one 1.6 GB internal disc drive and
was running very short of space. Because I had a little extra time this last
weekend, I decided to see if I couldn't do something about that shortage of
space.
I remembered that about three or four years ago I had bought a single-ended
SCSI disc drive from APS for one of our Macintoshes. The single-ended SCSI
disc drive was marketed wholly for Macs, and indeed, for a bit of time I did
have the disc drive mounted on a Mac, but as things worked out, I thought
that I needed it more for a new project and tried to mount in on our 917 as a
private volume.
Everything went swimmingly three years ago. I installed it as an HP7935
look-alike, and everything seemed to work just fine. However, as things
worked out, the project I intended to use this disc drive for never got off
of the ground and the disc just spinned for a year, unused, before I decided
to demount it and put in a closet.
That was two years ago. A week ago, I took the disc out of the closet -- but
by now, my failing memory being what it is -- I couldn't remember for the
life of me what size the disc was or who made it. All I knew for sure was
that it was single-ended.
Because there were absolutely no markings on the APS case, other than the APS
logo, I took the disc drive apart to see what the heck it was, but that
proved equally fruitless. All I was able to discover was that fact that the
disc was made by Quantum, but there was no indication anywhere on the
physical drive as to what the size it was, or even its model number.
More discouragingly, Quantum isn't listed anywhere in the IODFAULT.PUB.SYS
listings.
I then spoke to Rene Woc of Adager, as I often do when I'm stumped as to what
to do next, and Rene had a particularly good idea. Take the 918 down and
connect the disc to an unused SCSI address, and then, when bringing up the
machine, run ODE's MAPPER and see if it could identify the disc. If it could
ID the disc, then go ahead and bring the machine up. The worst that could
happen is that I'd crash the machine, but then what are backups for?
Lo and behold, MAPPER identified the disc as a Quantum Fireball TM_3200S
drive, and after looking in the archives at the Quantum web site, I deduced
that it was a 3.2GB drive. I now had the complete specificiations of the
drive (I'm still fairly impressed with the idea of the web).
Based on this information, I brought the 918DX up, with the disc drive being
partially recognized (it was "mounted" but otherwise inaccessible). After
doing some VOLUTIL magic, I was able to scratch it, reformat it, and mount it
as a second member of the MPE system volume:
------------------------ Volume Information ------------------------
Ldev Type Index Volume Set Name Volume Name
1 Master 1 MPEXL_SYSTEM_VOLUME_SET MEMBER1
2 Member 2 MPEXL_SYSTEM_VOLUME_SET MEMBER2
3 Unmounted 0
4 Unmounted 0
11 Unmounted 0
My primary concern at this point was: what driver do I use to assign to the
new LDEV 2, especially given that there were no Quantum drives listed in
IODFAULT? In the absence of any other information, I just left the driver as
the one that had been pre-configured by someone at HP for LDEV 2:
------------------------- IO Configuration -------------------------
Highest Ldev: 311
Ldev Path Device Type Device ID Device Mgr Class
Name
1 56/52.6.0 Disk HPC2247M1 SCSI_DISC_DM
2 56/52.5.0 Disk HPC2247M1 SCSI_DISC_DM
3 56/52.4.0 Disk HPC2247M1 SCSI_DISC_DM
4 56/52.3.0 Disk HPC2247M1 SCSI_DISC_DM
I was most impressed that doing this not only worked, but that the Device ID
now seems to be a relic of the past. As it turns out, neither of the two disc
drives on this machine are what they say they are, and SYSINFO reports this
fact:
Device Adapter(56/52.5) --- PSEUDO
Device(56/52.5.0) [ ldev 2 HPC2247M1 DISK]
***DEV CONFIG MISMATCH, ACTUAL ID = HPFIREBALL_TM3200S***
Device Adapter(56/52.6) --- PSEUDO
Device(56/52.6.0) [ ldev 1 HPC2247M1 DISK]
***DEV CONFIG MISMATCH, ACTUAL ID = ST34572N***
(noticing of course, that the Quantum Fireball label has now been changed to
HPFIREBALL :-).
All in all, I'm fairly impressed. The disc was now mounted and properly
recognized as it size -- and all of the new files (customer databases) were
placed on this new empty disc, in preference to alternating back and forth,
the way that disc fills had been done on the Classics.
Somebody has clearly done their homework, and is to be congratulated.
Wirt Atmar
|
