18 Oct
1999
18 Oct
'99
5:25 p.m.
Can anyone provide any information about the best way to preserve
cartridge tapes, such as DC300 tapes, so that parts of the tape don't
stick together? Using new 3M DC300 tape several years ago, onto which
I'd copied the source code to the S.6 version of the Accent operating
system, the tape stuck together about two years later and was
destroyed when I tried to read it. Not sure how to try to preserve the
rest of the data, written with the Stut (the streaming tape utilitu
software) software, that's still on the tape - any ideas?
--
R. D. Davis
rdd(a)perqlogic.com Be careful what you wish for --- you
http://www.perqlogic.com/rdd may get your wish ...and it might not
Tel: (410) 744-4900 be what you were expecting.
18 Oct
18 Oct
8:59 p.m.
On Mon, 18 Oct 1999, R. D. Davis wrote:
Can anyone provide any information about the best way to preserve
cartridge tapes, such as DC300 tapes, so that parts of the tape don't
stick together? Using new 3M DC300 tape several years ago, onto which
I'd copied the source code to the S.6 version of the Accent operating
system, the tape stuck together about two years later and was
destroyed when I tried to read it. Not sure how to try to preserve the
rest of the data, written with the Stut (the streaming tape utilitu
software) software, that's still on the tape - any ideas?
The only thing that I would suggest is to retension them periodically
before they start to stick adjacent layers.
- don
--
R. D. Davis
rdd(a)perqlogic.com Be careful what you wish for --- you
http://www.perqlogic.com/rdd may get your wish ...and it might not
Tel: (410) 744-4900 be what you were expecting.
19 Oct
19 Oct
8:45 a.m.
A non-text attachment was scrubbed...
Name: not available
Type: text
Size: 983 bytes
Desc: not available
Url :
http://www.classiccmp.org/pipermail/cctalk/attachments/19991019/ea5e4b2c/at…
10:30 a.m.
I talked to a data recovery specialist a while back on the bus from the
San Francisco airport into the city about just these things. He was
telling me (in addition to lots of other interesting things about coaxing
data from "hopeless" media) that they use a special lubricant to separate
sticky tape apart. Is there something that would work the same way
available to the general computer-using populace?
Also, since it's just magnetic media, couldn't you disassemble the tape
and soak it in warm water, then try to hang it somewhere to dry? I've done
the same things with floppy disks that had "mystery" spills on them that
stuck the media to the inside of the housing...
Just musing,
Aaron
On Tue, 19 Oct 1999, Tony Duell wrote:
destroyed when
I tried to read it. Not sure how to try to preserve the
rest of the data, written with the Stut (the streaming tape utilitu
software) software, that's still on the tape - any ideas?
Am I correct this is a QIC11 tape, 4 track, written on a Sidewinder or
similar?
You are going to have problems. I assume that when the tape stuck
together, it pulled some oxide off the tape, and that there are now
transparent patches in the middle of the data area. The EOT (and BOT)
detection on these drives is optical, and will be triggered by this damage.
My guess is that the Sidewider drive iteself is going to be unable to get
the data blocks off the tape. The 'Intellegent Controller' (Archive's
term for the QIC-02 to QIC36 interface board) is not going to allow you
to read past what it thinks is the end of the tape.
And unless you can get the drive to read blocks off the tape, there's
nothing you can do by messing about with stut on the host.
-tony
11:52 a.m.
A non-text attachment was scrubbed...
Name: not available
Type: text
Size: 1277 bytes
Desc: not available
Url :
http://www.classiccmp.org/pipermail/cctalk/attachments/19991019/d25b5bd1/at…
9039
days inactive
9040
days old
4 comments
4 participants
participants (4)
-
af-list＠wfi-inc.com -
ard＠p850ug1.demon.co.uk -
donm＠cts.com -
rdd＠smarty.smart.net