Hard Drive Advice
03-Jan-95 08:53:52
Sb: #180560-Hard Drive Advice
Fm: Christopher Tolmie 73657,3335
To: daniel stripes 76474,1514
daniel,
Here is the info expertprep provided for me.
QUANTUM: 525MB
LowCyl: 1
HiCyl: 5782
Heads: 3
Sectors: 62
Blocks: 1075649
> INFO
Mounted disks:
Unit Size Used Free Full Errs Status Name
DHQ: 525M 711454 363996 66% 0 Read/Write QUANTUM
It appears that I have 525MB out of the possible 549 formatted capacity shown
in the Table of SCSI specs provided by the seller.
Termination always seems different to each setup, and again different
when you add additional devices to the chain. Right now I haven't (it
seems) any termination myself since removing one of the external
devices (failed tape drive) which was the terminated device. I'm
preparing to move all the external devices into one case so I'll be
playing with the termination again later this month. But I don't
think the ribbon header provides any termination.
On page 2 of expertprep you can choose whether the drive is the BOOT drive or
just to be mounted on BOOT. It is a toggle gadget under the Boot/Mount option
on the left of the screen. Choices are BOOT, MOUNT and NOMOUNT. You should
also be able to hold down both mouse buttons on boot-up and get the boot
screen. From there you should be able to choose which drive you want to boot
from, however, when I try that I get a crash, using WB3.1.
The other choices in Expertprep are Disconnect, Last Disk, and Last LUN. I've
always been somewhat unsure how to use these, maybe another person with more
technical knowledge can provide us with some insight on these choices.
Termination has always been a black art for me. I found that you have to play
around with it, moving the resistors from device one to device two, etc.
There is active termination available. It is an external device that
provides powered termination, LEDs to indicate what is going on and
the advertisements in APS Technologies ((800) 947-8599) make the SCSI
SENTRY look interesting. Part of the ad reads,"answer to your SCSI
woes. Take the Voodoo out of SCSI with SCSI Sentry or our new SCSI
Sentry II." Listed @$79.95 and $99.95. Looks like an external pass
through terminator with a couple of LED triangles and a power button.
Getting their catalog is worth a call, it if full of interesting products. But
slightly pricey. I do like the looks of their external cases and unique way
they connect them with minimal length connections that are heavily shielded.
Probably well worth the added cost.
Now on AP1.75 but I miss having the formatting of 1.74 or understand why!
Christopher