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DDS-2 Tape drive -- setting density

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alan_mc...@yahoo.com

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Apr 15, 2009, 4:17:32 PM4/15/09
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I have a 4mm tape drive that I'm told is DDS-2.

It identifies itself as an Archive Python 04687-XXX 6610 drive.
(The fron panel says Seagate.)

However, "mt -f /dev/st0 status" shows it set to DDS-1 (0x13),
and if I try to change the density to DDS-2, by
"mt -f /dev/st0 setdensity 0x24", it gives me an error message.

Setting it to density 0x13 gives no error.

I did notice that if I put a DDS-1 cassette in, it gets errors
when it tries to write or read the tape. I don't know if it's
because the tape is kaput or if the drive can't handle
a DDS-1 tape.


Also, I can't figure out whether "mt -f /dev/st0 compression 1" does
anything -- is there a command to show whether compression
is on?

alan_mc...@yahoo.com

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Apr 15, 2009, 4:22:09 PM4/15/09
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I forgot to mention: this is a RedHat 9 system (kernel 2.4.20-6)

Jules

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Apr 15, 2009, 4:25:35 PM4/15/09
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On Wed, 15 Apr 2009 13:17:32 -0700, alan_mckenney1 wrote:

> I have a 4mm tape drive that I'm told is DDS-2.

Do you know the drive's any good? IME those drives are really prone to
failure - and all sorts of odd things can happen when they go bad :-(


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