tape to tape duplication

2007-12-25 10:23:00

Thanks for the many responses! There were too many names to list!!!

Commands summarized below followed by original message.

tcopy (if drives on same system; may not work with all tape formats)

=====

tcopy source [ destination ]

EX:

tcopy /dev/rst0 /dev/rst1

tcopy /dev/rmt/xxx /dev/rmt/yyy

Drives on Same System

---------------------

dd if=/dev/<tape drive 1 address> of=/dev/<tape drive 2 address>

EX:

dd if=/dev/rmt/0m ibs=126b | dd of=/dev/rmt/1m obs=126b

Drives on Different Systems

---------------------------

dd if=/dev/rmt/0m ibs=126b | rsh tapehost -n dd \ of=/dev/rmt/1m

obs=126b

dd if=/dev/rmt/0m bs=10240 | remsh host2 'cat | dd of=/dev/rmt/0m \

bs=10240'

Blocking size comments:

"The idea is to use a blocksize which streams well, in other words

both tapes running continuously, without constant stopping and

restarting."

Reminder to check validity of tape copied with:

mt -f /dev/rmt/1 rewind

tar tvf /dev/rmt/1n

** Other suggestions (which I did not try yet) are:

=========================================================

cp -r (if you're going from one Solaris 8mm to another of the

same size on the same system)

tar xf $TAPE1 - | tar cf $TAPE2 - (for tar tapes)

ORIGINAL QUESTION

=================

At 02:08 PM 5/13/98 GMT, you wrote:

> We are trying to copy the contents of one 8mm tar tape

> directly to another 8mm tape without going to disk in between.

Actived: 0 answers; - size: 3773 bytes; - view related info - Similar thread

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