Amanda-Users

Dell PowerVault 122T LTO2 tapetype sanity check.

2005-10-26 19:39:05
Subject: Dell PowerVault 122T LTO2 tapetype sanity check.
From: Alan Jedlow <jedlow AT u.washington DOT edu>
To: amanda-users AT amanda DOT org
Date: Wed, 26 Oct 2005 16:33:19 -0700
Hi,

I know the "docs" say to turn hardware compression
off before running amtapetype, unfortunately I've
found no info on how to disable hw compression on a
Dell PowerVault 122T LTO2 library.

How "bad" is this result ?

-----------------------------------------------------------------------
-bash-3.00$ /usr/sbin/amtapetype -e 200g -f /dev/nst0 -t Ultrium2
Writing 4096 Mbyte   compresseable data:  40 sec
Writing 4096 Mbyte uncompresseable data:  350 sec
WARNING: Tape drive has hardware compression enabled
Estimated time to write 2 * 204800 Mbyte: 35000 sec = 9 h 43 min
wrote 6422528 32Kb blocks in 98 files in 6420 seconds (short write)
wrote 6422528 32Kb blocks in 196 files in 6719 seconds (short write)
define tapetype Ultrium2 {
   comment "just produced by tapetype prog (hardware compression on)"
   length 200704 mbytes
   filemark 0 kbytes
   speed 31300 kps
}
-----------------------------------------------------------------------

thanks,
 alan

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