LTO4 does not shoe-shine, it has variable speed motors.

-Nick

Jean-Francois Malouin wrote:

* jp.pozzi AT izzop DOT net <jp.pozzi AT izzop DOT net> [20081106 14:56]:

Hello,

Some "real" data for LTO4 :
STATISTICS:
                          Total       Full      Incr.
                        --------   --------   --------
Estimate Time (hrs:min)    0:06
Run Time (hrs:min)         1:57
Dump Time (hrs:min)        1:28       1:21       0:07
Output Size (meg)      181368.1   178690.5     2677.6
Original Size (meg)    181368.1   178690.5     2677.6
Avg Compressed Size (%)     --         --         --    (level:#disks
...)
Filesystems Dumped           43         12         31   (1:31)
Avg Dump Rate (k/s)     35031.4    37451.2     6595.0

Tape Time (hrs:min)        1:19       1:17       0:02
Tape Size (meg)        181368.1   178690.5     2677.6
Tape Used (%)              22.6       22.3        0.3   (level:#disks
...)
Filesystems Taped            43         12         31   (1:31)
Avg Tp Write Rate (k/s) 39421.3    39850.4    22939.1

                          ^^^^^^^^

|-> Eeek!

If this is indeed for a LTO4, you are shoe-shinning big time!
You will wear out the tape heads very very rapidly...

jf

USAGE BY TAPE:
  Label               Time      Size      %    Nb
  sauvedata_009       1:19   181368M   22.6    43


Regards

JP Pozzi

On Mon, 2008-10-27 at 12:28 -0400, Nick Brockner wrote:

Howdy,

Time to replace the aging DAT changer.

Just looking for some input on what LTO3/4 drives (or libraries) work well with amanda.

Thanks in advance,
Nick

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