DECUS Essential Tools Collection, 1996 for OpenVMS Alpha and OpenVMS VAX (VS0174)


From: "Glenn C. Everhart" <EVERHART@arisia.gce.com>
To: goathunter@WKUVX1.BITNET
Subject: vmstpc

Hunter -
  There has been some discussion of the need for a utility to read
tapes with serious bit rot lately, so I finally got round to doing
something that's been needed: I added another switch to vmstpc so
it can ignore tape errors. It's an override condition, and I have
trouble testing it much (don't have any 8mm's around with bitrot)
but i thought it might prove handy. If you give it the switch /ERROR
it will do its error-ignore thing and pretend all those rotten bits
were read OK. As long as your tape drive can skip past the bad areas
(not all do), this can give a way to get a copy of what the tape
hardware can get off the tape, which can then be put onto a new
tape. Hopefully then the new tape can be used to recover some of the
data. Without the /ERROR switch it's just Brian Nelson's code, which
is probably the fastest way to move data between tape and disk. A tape
to tape program that does this kind of thing is of course pretty
trivial, but sometimes we don't have two tape drives of the right type
to play these games.
  I'm sending it in hopes it might make it to your fileserver and/or
ftp.spc.edu. The ZIP file contains .obj and .exe as well as sources
and help. This was written for, and has been used by, tapecopy people
for years...
Glenn Everhart
Everhart@Arisia.GCE.Com (best)
Everhart@Raxco.com (ok, but slower)
215 358 5875

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