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Full Discussion: back up probelm
Top Forums UNIX for Dummies Questions & Answers back up probelm Post 12331 by clemeot on Thursday 27th of December 2001 03:28:49 AM
Old 12-27-2001
i had did backup with rewind tape command, it is working as normal. The rewind command i used in HP unix is like this:

mt -t /dev/rmt/0m rew

actually u can set the block size on the command but i am not sure how it exactly look like, u can refer to this command below:

tar cvfb -20 * | remsh 123.456.789.00 dd of=/dev/rmt/0m obs=20b

note:
b=blocksize, dd= drive as directory, 20b=blocksize is 20

i think "tar cvb -20 . "also can work, try this.
 

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tcopy(1)							   User Commands							  tcopy(1)

NAME
tcopy - copy a magnetic tape SYNOPSIS
tcopy source [destination] DESCRIPTION
The tcopy utility copies the magnetic tape mounted on the tape drive specified by the source argument. The only assumption made about the contents of a tape is that there are two tape marks at the end. When only a source drive is specified, tcopy scans the tape, and displays information about the sizes of records and tape files. If a des- tination is specified, tcopy makes a copies the source tape onto the destination tape, with blocking preserved. As it copies, tcopy pro- duces the same output as it does when only scanning a tape. The tcopy utility requires the use of Berkeley-compatible device names. For example, example% tcopy /dev/rmt/1b /dev/rmt/2b ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesu | +-----------------------------+-----------------------------+ SEE ALSO
mt(1), ioctl(2), attributes(5) NOTES
tcopy will only run on systems supporting an associated set of ioctl(2) requests. SunOS 5.11 10 Mar 2000 tcopy(1)
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