15 Jan
2004
15 Jan
'04
9:52 a.m.
On Thu, 15 Jan 2004 "Zane H. Healy" <healyzh(a)aracnet.com> wrote:
The 8500 should work fine as well, according to documentation I have.
I just decided
to test a TLZ06 on my system, and it don't want to
work. I normally play with an Exabyte 8200, and that works just fine.
(This on a 11/84 with a CMD controller)
I managed to dig up a TZ30 and a couple TK50's last night, though I didn't
get a chance to try it. If an Exabyte 8200 works just fine, I think I might
try the Exabyte 8500, as I can hook it up to my PDP-11/23+ fairly easy
(hooking an external drive up to my /73 as I mentioned would require
rewiring the SCSI Bus). I just wish I'd thought to dig out a couple 8mm
tapes while I was digging. BTW, what do you mean by "didn't want to
work". Do you mean that it wouldn't
work at all with your PDP-11/84 and CMD controller? The TLZ06 works just
fine on my PDP-11/73 with Viking controller. It's just with RSTS/E ANSI
tapes that I seem to be having a problem.
I just tried with RSX, using BRU, DMP and INI. With DMP I tried a tape I
wrote on another machine with tar.
I got some funny error. I can send you the RSX error log of the occasion,
if that makes you happy. Both BRU and INI will create small blocks.
Btw, I also created small blocks on the NetBSD machine I have a DDS drive
on, and it went just fine there.
But I did notice that someone else said that the TLZ06 will not like DDS2
tapes, which is what I had. The NetBSD box appearantly have a DDS2
drive... (since it works fine)
Johnny
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt(a)update.uu.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
15 Jan
15 Jan
11:41 a.m.
I managed to
dig up a TZ30 and a couple TK50's last night, though I didn't
get a chance to try it. If an Exabyte 8200 works just fine, I think I might
try the Exabyte 8500, as I can hook it up to my PDP-11/23+ fairly easy
(hooking an external drive up to my /73 as I mentioned would require
rewiring the SCSI Bus). I just wish I'd thought to dig out a couple 8mm
tapes while I was digging.
The 8500 should work fine as well, according to documentation I have. BTW, what do you mean by "didn't want to
work". Do you mean that it wouldn't
work at all with your PDP-11/84 and CMD controller? The TLZ06 works just
fine on my PDP-11/73 with Viking controller. It's just with RSTS/E ANSI
tapes that I seem to be having a problem.
I just tried with RSX, using BRU, DMP and INI. With DMP I tried a tape I
wrote on another machine with tar.
I got some funny error. I can send you the RSX error log of the occasion,
if that makes you happy. Both BRU and INI will create small blocks.
Btw, I also created small blocks on the NetBSD machine I have a DDS drive
on, and it went just fine there. 
7:17 p.m.
On Jan 15, 2004, at 2:52 PM, Johnny Billquist wrote:
But I did notice that someone else said that the TLZ06
will not like
DDS2
tapes, which is what I had. The NetBSD box appearantly have a DDS2
drive... (since it works fine)
Nitpick warning!
That was me, but what I actually said was that most DDS1 drives won't
load a DDS2 tape. I can't remember the "official" name of the feature,
but almost all 4mm drives do media-format detection, and will just spit
out a tape larger than they rate for. I do recall that the DEC
firmware doesn't do that, but I'm still fairly sure it won't work.
Doc
8:01 p.m.
Nitpick warning!
That was me, but what I actually said was that most DDS1 drives won't
load a DDS2 tape. I can't remember the "official" name of the feature,
but almost all 4mm drives do media-format detection, and will just spit
out a tape larger than they rate for. I do recall that the DEC
firmware doesn't do that, but I'm still fairly sure it won't work.
I've seen a similar "feature" with Exabyte Eliant 820 drives. They
will spit
out 8200-generated tapes, unless they are write protected.
HP DDS2-drives (at least the ones I have seen) will spit out all tapes(e.g.
90 m metal) _unless_ they have media recognition.
Nico
18 Jan
18 Jan
11:04 a.m.
That was me, but what I actually said was that most
DDS1
drives won't
load a DDS2 tape. I can't remember the "official" name of
the feature,
but almost all 4mm drives do media-format detection, and will
just spit
out a tape larger than they rate for. I do recall that the DEC
firmware doesn't do that, but I'm still fairly sure it won't work.
I don't know about other drives, but the TLZ04 will happily
accept a 90m tape rather than the 60m ones it was designed
for. I'm sure of that because of all the warnings that
appeared once the 90m tapes became common, to the effect
that using one in a TLZ04 would appear to work for about
as long as it took for the head to wear away significantly.
(It was never specified whether this would happen within
a few passes or whether it might take a little longer.
My TLZ04s were quite happy to chew 60m tapes so I
never had a chance to feed one a 90m one :-))
I expect that later drives might have been more tolerant
or careful, but I try to be nice the the TLZ09 I have now.
Antonio
--
---------------
Antonio Carlini arcarlini(a)iee.org
7492
days inactive
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4 comments
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arcarlini＠iee.org -
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doc＠mdrconsult.com -
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nico＠farumdata.dk