Re: LTO-2 configuration on AIX 5.2

From: Bill Verzal (BVerzal@KOMATSUNA.COM)
Date: Tue Mar 16 2004 - 09:32:05 EST


Compression is on by default.

BV
--------------------------------------------------------

"If everything is coming your way, then you are in the wrong lane"

Bill Verzal
AIX Administrator, Komatsu America
(847) 970-3726 - direct
(847) 970-4184 - fax

             "Willeat, Todd"
             <TWilleat@MHP.SMH
             S.COM> To
             Sent by: IBM AIX aix-l@Princeton.EDU
             Discussion List cc
             <aix-l@Princeton.
             EDU> Subject
                                       LTO-2 configuration on AIX 5.2

             03/15/2004 06:12
             PM

             Please respond to
                  IBM AIX
              Discussion List
             <aix-l@Princeton.
                   EDU>

Hi all,

I am setting up an ADIC Scalar i2000 library on AIX 5.2. AIX sees the
drives, but recognizes them as Other FC SCSI Tape Drive instead of LTO-2.
It
did recognize them as LTO-2 with the Atape driver, but the driver did not
allow the changer to be seen. So, I am running without Atape. My question
is
how to tell if the LTO-2 drives are set to use compression. I have
configured Legato NetWorker to use /dev/rmt0.1 and can access the drives
and
read tape fine, but both density settings are 0 which means it should use
the drive's default setting. Is compression the default? Here is what smit
shows:

 Tape Drive rmt0
 Tape Drive type ost
 Tape Drive interface fcp
 Description Other FC SCSI Tape Dr>
 Status Available
 Location 1j-08-01
 Parent adapter fscsi0
 Connection address 1
 BLOCK size (0=variable length) [0]
+
 Use DEVICE BUFFERS during writes yes
+
 RETURN error on tape change or reset no
+
 Use EXTENDED file marks yes
+
 RESERVE/RELEASE support no
+
 BLOCK SIZE for variable length support [0]
+#
 DENSITY setting #1 [0]
+#
 DENSITY setting #2 [0]
+#
 Set delay after a FAILED command [45]
+#
 Set timeout for the READ or WRITE command [144]
+#

               _______________________________________
              / Todd A. Willeat \
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