08-05-2009
hmm. Getting rid of?
Do you feel compelled to keep the tapes usable for someone else? And just how private is the data on them?
I would guess that a secure erase of a tape is analogous to a secure erase of a disk drive. To make sure data cannot be retrieved, it might need to be overwritten and erased multiple times. I read an exchange once where someone had accidentally erased a tape in a way that effectively just wrote an end of tape at the beginning of the tape. Others were instructing them on how to get the drive to read past that so that they could recover some of their lost data.
So, how about strong magnets, or burning, or shredding?
Google "secure erase of data tapes" and see what you find. One example is
Secure Data Deletion
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LEARN ABOUT REDHAT
amverify
AMVERIFY(8) System Manager's Manual AMVERIFY(8)
NAME
amverify - check an Amanda tape for errors
SYNOPSIS
amverify config [ slot [ runtapes ] ]
DESCRIPTION
Amverify reads an Amanda format tape and makes sure each backup image can be processed by amrestore and, if possible, the appropriate
restore program (e.g. tar).
Amverify runs amrestore on each file of the tape and pipes the output to a restore program (if available) with an option to create a cata-
logue of the backup. The catalogue itself is discarded. Only the success or failure of the operation itself is reported.
If the backup image cannot be processed by the restore program, e.g. if it was written on a different operating system, the image is sent
through dd to /dev/null. This still determines if the tape is readable, but does not do any internal consistency check on the image.
If config is set up to use a tape changer, the slot argument may be used to choose the first tape to process. Otherwise, the current slot
is used.
The runtapes configuration parameter determines how many tapes are processed unless it is specified on the command line.
See the amanda(8) man page for more details about Amanda.
AUTHOR
Axel Zinser <fifi@icem.de>
SEE ALSO
amrestore(8), amanda(8), amverifyrun(8)
AMVERIFY(8)