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тАО12-30-2008 02:46 AM
тАО12-30-2008 02:46 AM
I have a tape drive that attached to the server , I use mt command could manage it , tar command to write data to it , could advise if I want to format the tape , or erase the data in the tape , what can i do ? thx
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тАО12-30-2008 04:33 AM
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тАО12-30-2008 05:10 AM
тАО12-30-2008 05:10 AM
Re: Manage the tape
To destroy the old data on the tape without putting in any meaningful new data, there are several options:
Overwrite with zero bytes:
dd if=/dev/zero of=/dev/ bs=10240
Overwrite with random bytes (slower):
dd if=/dev/urandom of=/dev/ bs=10240
Adjust the bs= (blocksize) parameter to match the preferred block size of your tape drive type.
But if you have a magnetic tape degausser device, just put the tape in/on the degausser device and switch it on. The strong magnetic field will erase the data from the entire tape all at once. This is the fastest way to erase all data from a tape.
MK
Overwrite with zero bytes:
dd if=/dev/zero of=/dev/
Overwrite with random bytes (slower):
dd if=/dev/urandom of=/dev/
Adjust the bs= (blocksize) parameter to match the preferred block size of your tape drive type.
But if you have a magnetic tape degausser device, just put the tape in/on the degausser device and switch it on. The strong magnetic field will erase the data from the entire tape all at once. This is the fastest way to erase all data from a tape.
MK
MK
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