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Full Discussion: external DDS4 Tape Drive
Operating Systems AIX external DDS4 Tape Drive Post 302228133 by bakunin on Saturday 23rd of August 2008 03:20:26 AM
Old 08-23-2008
I suppose you will want to shuffle the tape drive between the two machines back and forth, right? If so, there is no point in deleting the device entry in one machine with the process like ravager has described. Just switch off the drive and disconnect it (you will notice the devices status to change from "Available" to "Defined") and connect it to the other machine, run cfgmgr, etc..

When you switch the drive back to the original machine run cfgmgr again and the status will go from "Defined" back to "Available" meaning that you can use the device again.

Basically it is a good idea to keep the device information as accurate as possible. If you plan to permanently remove the drive then do like ravager has described. If you plan to shuffle it back and forth on a more or less regular basis then there is no point in deleting a device entry which you will (re-)create again when connecting the drive.

I hope this helps.

bakunin
 

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LEARN ABOUT CENTOS

tapeinfo

TAPEINFO(1)						      General Commands Manual						       TAPEINFO(1)

NAME

       tapeinfo - report SCSI tape device info

SYNOPSIS

       tapeinfo -f <scsi-generic-device>

DESCRIPTION

       The  tapeinfo  command  reads  various information from SCSI tape drives that is not generally available via most vendors' tape drivers. It
       issues raw commands directly to the tape drive, using either the  operating  system's  SCSI  generic  device  (	e.g.  /dev/sg0	on  Linux,
       /dev/pass0 on FreeBSD) or the raw SCSI I/O ioctl on a tape device on some operating systems.

       One  good  time	to  use 'tapeinfo' is immediately after a tape i/o operation has failed. On tape drives that support HP's 'tapealert' API,
       'tapeinfo' will report a more exact description of what went wrong.

       Do be aware that 'tapeinfo' is not a substitute for your operating system's own 'mt' or similar tape driver control program. It is intended
       to supplement, not replace, programs like 'mt' that access your operating system's tape driver in order to report or set information.

OPTIONS

       The first argument, given following -f , is the SCSI generic device corresponding to your tape drive.  Consult your operating system's doc-
       umentation for more information (for example, under Linux these are generally start at /dev/sg0 under FreeBSD these start at /dev/pass0).

       Under FreeBSD, 'camcontrol devlist' will tell you what SCSI devices you have, along with which 'pass' device controls  them.  Under  Linux,
       "cat /proc/scsi/scsi" will tell you what SCSI devices you have.

BUGS AND LIMITATIONS

       This program has only been tested on Linux with a limited number of tape drives (HP DDS4, Seagate AIT).

AVAILABILITY

       tapeinfo  is  currently	being maintained by Robert Nelson <robertnelson@users.sourceforge.net> as part of the 'mtx' suite of programs. The
       'mtx' home page is http://mtx.sourceforge.net  and  the	actual	code  is  currently  available	there  and  via  SVN  from  http://source-
       forge.net/projects/mtx.

SEE ALSO

       mt(1),mtx(1),scsitape(1),scsieject(1),loaderinfo(1)

								    TAPEINFO1.0 						       TAPEINFO(1)
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