Ultrium Tape Post: 100435

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Operating Systems AIX Ultrium Tape Post 100435 by Garry_Garrett on Monday 27th of February 2006 12:59:01 PM

02-27-2006

Registered User

I am not that familiar with Ultrium. Some of the newer tape technologies come with a chip on the tape. It does not rewind the tape when you eject, the chip keeps track of how far into the tape you are. That chip may also keep track of dates. How you'd go about reading it, I don't know.

We have taken to always writing on the tape (with a perminant maker, a silver permanant marker on black ones), the date that the tape arrived (for tapes we open later, we write it on the packaging, and when you break the seal, you write the date on the package on the tape, etc.). If you have bar codes, and you get to pick the names, you can do stuff like your first order, all the tape names start with "A"; your second order, they all start with "B". That way, you can know the "age" of a tape by knowing if it is an "A" tape or a "B" tape, etc.

The "milage" is far more important that the date. A tape you use 3 times a day will wear out faster than the tape you use once a month. Age is a factor when it comes to the glue that holds the magnetic matterial on the tape. The more the tape is flexed (used) the faster the glue wears out, but age in and of itself (even if it just sits on a shelf) can cause the glue to give out. All anyone can give you is an estimate.

I would inquire with the media's manufacturer.

Garry_Garrett

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btape

BTAPE(8)					     Network backup, recovery and verification						  BTAPE(8)

NAME

	btape - Bacula's Tape interface test program

SYNOPSIS

       btape [options] device-name

DESCRIPTION

       This manual page documents briefly the btape command.

OPTIONS

       A summary of options is included below.

       -?     Show summary of options and commands.

       -b bootstrap
	      Specify a bootstrap file.

       -c config
	      Specify configuration file.

       -d nn  Set debug level to nn.

       -p     Proceed inspite of I/O errors.

       -t     Open the default tape device.

       -s     No signals (for debugging).

       -v     Set verbose mode.

COMMANDS

       autochanger
	      test autochanger

       bsf    backspace file

       bsr    backspace record

       cap    list device capabilities

       clear  clear tape errors

       eod    go to end of Bacula data for append

       eom    go to the physical end of medium

       fill   fill tape, write onto second volume

       unfill read filled tape

       fsf    forward space a file

       fsr    forward space a record

       help   print this reference

       label  write a Bacula label to the tape

       load   load a tape

       quit   quit btape

       rawfill
	      use write() to fill tape

       readlabel
	      read and print the Bacula tape label

       rectest
	      test record handling functions

       rewind rewind the tape

       scan   read() tape block by block to EOT and report

       scanblocks
	      Bacula read block by block to EOT and report

       status print tape status

       test   General test Bacula tape functions

       weof   write an EOF on the tape

       wr     write a single Bacula block

       rr     read a single record

       rb     read a single bacula block

       qfill  quick fill command

SEE ALSO

       bscan(1), bextract(1).

AUTHOR

       This manual page was written by Jose Luis Tallon <jltallon@adv-solutions.net>.

Kern Sibbald							 26 November 2009							  BTAPE(8)