6 May
1999
6 May
'99
9:18 a.m.
1) Can a TK70 drive read/write TK50 tapes? I'm looking for media for the
TK70 to test it and all I've found so far are TK50 tapes (or are they the
same tape?)
2) What termination requirements are there on DSSI disks? I powered up the
two RF71's and the KQSFA DSSI controller in the BA213, they spun up and the
ready lights were on but when UNIX probed the controller it saw only one
drive and when I tried to read that drive its FAULT light started flashing.
The cabinet is set up to connect the card to a ribbon cable that connects
both drives and then ends at a funky high density connector (looks a lot
like SCSI-2).
Thanks,
--Chuck McManis
6 May
6 May
9:25 a.m.
On Thu, 6 May 1999, Chuck McManis wrote:
1) Can a TK70 drive read/write TK50 tapes? I'm
looking for media for the
TK70 to test it and all I've found so far are TK50 tapes (or are they the
same tape?)
It can read TK50, but not write them. Inserting a TK50 cartridge into
a TK70 drive will automatically turn on the "write protect" light.
TK50 cartridges are 95MB, and TK70 are, I _believe_, around 200MB.
Don't quote me on the TK70 size, though :)
2) What termination requirements are there on DSSI
disks? I powered up the
two RF71's and the KQSFA DSSI controller in the BA213, they spun up and the
ready lights were on but when UNIX probed the controller it saw only one
drive and when I tried to read that drive its FAULT light started flashing.
The cabinet is set up to connect the card to a ribbon cable that connects
both drives and then ends at a funky high density connector (looks a lot
like SCSI-2).
I'm not too sure about this. I know that on my MicroVAX 3800, the DSSI
disks each have the main cable (high density 50 pin, as you described)
running to it, and also a second smaller cable for ID select running to
the front panel, which has the ID jumpers on it. In my case, the DSSI
disks are RF71 and RF72 drives.
At the end of the chain I have a small 50-pin terminator. It looks to
me just like a 50 pin SCSI terminator, except I'm sure it's different.
I'll look up the part number for you when I get home.
Thanks,
--Chuck McManis
-Seth
--
"You know, if there's one thing more destructive | Seth J. Morabito
than a hydrogen bomb, it's a hydrogen bomb strapped | sethm(a)loomcom.com
to the back of a MANLY MAN!!!" [James "Kibo" Parry] | Perth ==> *
10:06 a.m.
On Thu, 6 May 1999, Chuck McManis wrote:
1) Can a TK70 drive read/write TK50 tapes? I'm
looking for media for the
TK70 to test it and all I've found so far are TK50 tapes (or are they the
same tape?)
I seem to recall reading that the TK70 tape is a Compac II while the TK50
is Compac. A while ago, I noted some TK70s at a local surplus outfit for
a few bucks apiece. Let me know if you want me to pursue it for you.
- don
2) What termination requirements are there on DSSI
disks? I powered up the
two RF71's and the KQSFA DSSI controller in the BA213, they spun up and the
ready lights were on but when UNIX probed the controller it saw only one
drive and when I tried to read that drive its FAULT light started flashing.
The cabinet is set up to connect the card to a ribbon cable that connects
both drives and then ends at a funky high density connector (looks a lot
like SCSI-2).
Thanks,
--Chuck McManis
4:29 p.m.
On Thu, 6 May 1999, Chuck McManis wrote:
2) What termination requirements are there on DSSI
disks? I powered up the
two RF71's and the KQSFA DSSI controller in the BA213, they spun up and the
ready lights were on but when UNIX probed the controller it saw only one
drive and when I tried to read that drive its FAULT light started flashing.
The cabinet is set up to connect the card to a ribbon cable that connects
both drives and then ends at a funky high density connector (looks a lot
like SCSI-2).
If you're running Unix, you probably will want to check the ALLOCLASS and
UNITID portions of the failing unit in the DSSI PARAMS configuration via
SET HOST /DUP/DSSI [node#] from your >>> prompt.
My experience on a mips DEC5400 suggests that unix (in my case, Ultrix)
does not like a non-zero allocation class and it likes the UNITID of the
drive to match that of the plug. Also keep in mind that you'll have to
add some entries similar to this into your kernel for it to recognize new
drives or previously unused controllers:
controller dssc1 at msi0 msinode 1
controller dssc2 at msi0 msinode 2
disk ra1 at dssc1 drive 1
disk ra2 at dssc2 drive 2
You didn't mention if your unix was Vax ultrix or a bsd port, so your
specifics may vary.
Paul
8 May
8 May
6:24 p.m.
New subject: Two quick questions, TK70 & DS
Chuck McManis wrote:
1) Can a TK70 drive read/write TK50 tapes? I'm
looking for media for the
TK70 to test it and all I've found so far are TK50 tapes (or are they the
same tape?)
2) What termination requirements are there on DSSI disks? I powered up the
two RF71's and the KQSFA DSSI controller in the BA213, they spun up and the
ready lights were on but when UNIX probed the controller it saw only one
drive and when I tried to read that drive its FAULT light started flashing.
The cabinet is set up to connect the card to a ribbon cable that connects
both drives and then ends at a funky high density connector (looks a lot
like SCSI-2).
Thanks,
--Chuck McManis
The terminator hanging off the DSSI bus in my MV3500 (KA640) is p.n.:
12-29258-01.
If I remember correctly, NetBSD doesn't support DSSI drives.. ;-{(
Stan
10 May
10 May
10:20 a.m.
New subject: Two quick questions, TK70 & DS
Yup, NetBSD noticed the controller and got the drive ID from it (RF71) it was
only when it talked to it that the drive complained. I'm guessing that the
drives may not be formatted (it would make sense).
Another question is that the drives plug into the uVAX
"ready/fault/writeprotect" thingy that sits on the front of the box. Do they
have to? I'm wondering because it is a royal pain to work on these things
inside the vaxserver chassis (BA213) but if I could set them out and on top it
would be easier to see what's going on.
--Chuck
So does anyone have a spare DSSI terminator?
--Chuck
Eric Smith wrote:
If I remember
correctly, NetBSD doesn't support DSSI drives.. ;-{(
Doesn't NetBSD support other MSCP disk drives? I thought the KQSFA looked
to the software like just any other MSCP controller.
4:53 p.m.
New subject: Two quick questions, TK70 & DS
Eric Smith wrote:
Other MSCP disks do work; I've got 2*RA70 and 6*RA72 disks on my MV3600,
running NetBSD 1.4 Beta...
If I remember
correctly, NetBSD doesn't support DSSI drives.. ;-{(
Doesn't NetBSD support other MSCP disk drives? I thought the KQSFA looked
to the software like just any other MSCP controller. 
8 May
8 May
8:28 p.m.
New subject: Two quick questions, TK70 & DS
If I remember correctly, NetBSD doesn't support
DSSI drives.. ;-{(
Does it specifically need to? After all, the KFQSA, which is what
the drives would hang off of, emulates one or more MSCP interfaces,
like RQDX3s, which I would suspect NetBSD would support...
Maybe they will 'Just Work'(tm).
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
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+--------------------------------+-------------------------------------+
9 May
9 May
11:46 a.m.
New subject: Two quick questions, TK70 & DS
Megan wrote:
<<snip>>
It would be nice...part two of the question would be: will NetBSD support
the onboard DSSI controller on the KA640? Then I'll have to find a way to
mount a bunch of RF-series drives, since the chassis has all 3 internal
drive bays fillld....
Stan
If I remember
correctly, NetBSD doesn't support DSSI drives.. ;-{(
Does it specifically need to? After all, the KFQSA, which is what
the drives would hang off of, emulates one or more MSCP interfaces,
like RQDX3s, which I would suspect NetBSD would support...
Maybe they will 'Just Work'(tm).
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10 comments
9 participants
participants (9)
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allisonp＠world.std.com -
cmcmanis＠freegate.com -
cmcmanis＠mcmanis.com -
donm＠cts.com -
eric＠brouhaha.com -
mbg＠world.std.com -
sethm＠loomcom.com -
stanp＠storm.ca -
thompson＠athenet.net