Replacing tape drive in RS/6000 7025 F40 running AIX 4.2.1? Post: 302144935

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Operating Systems AIX Replacing tape drive in RS/6000 7025 F40 running AIX 4.2.1? Post 302144935 by bakunin on Monday 12th of November 2007 02:43:25 AM

11-12-2007

Registered User

The tape drive in a RS/6000 is a simple SCSI-drive. In principle you could use anything which has a SCSI connector. Here is a sketch of how to replace it:

*) First get the "location code" of the tape, because it contains the SCSI-ID. Your output will be similar to the example here:

Code:

# lscfg | grep rmt
+ rmt0            40-60-00-4,0      IBM 3580 Tape Drive

That means: The device is connected to the SCSI-Adapter located at 40-60-00 (this is a specific slot in your machine, it would be a longer article to explain *that* to you) and the SCSI-ID it is using is 4 (-4,0).

*) Second, configure your replacement drive to use this SCSI-ID and connect it to the host adapter. DO THIS ONLY when the machine is switched off and the power connector is plugged out ("off" isn't really off with these machines, like with TV sets with remote controls). If you use the external SCSI-Connector you do not have to unplug the machine of course.

*) switch on the F40. Since you will probably not use an original IBM replacement part the tape drive will be named "other tape drive":

Code:

# lscfg | grep rmt
+ rmt0            40-60-00-4,0      Other Tape Drive

This would mean you are done. If you can't see an output similar to this issue "cfgmgr -v" and watch the output for error messages. Report them back here.

bakunin

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LEARN ABOUT DEBIAN

scsieject

scsieject(1)						      General Commands Manual						      scsieject(1)

NAME

       scsieject - control SCSI tape devices

SYNOPSIS

       scsieject [-f <scsi-generic-device>] commands

DESCRIPTION

       The scsieject command controls SCSI devices in a platform-independent manner. As long as 'mtx' works on the platform, so does 'scsieject'.

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  /dev/sg0  through  /dev/sg15,	under  FreeBSD	these  are
       /dev/pass0  through  /dev/passX.  Under Solaris this is usually the same as your tape drive (Solaris has a SCSI passthrough ioctl). You can
       set the STAPE or TAPE environment variable rather than use -f.

COMMANDS

       load	 Load the medium into the drive.  When this command is issued to a CD/DVD drive  and  the  tray  is  extended  the  tray  will	be
		 retracted if the drive is capable of it.

       unload	 Unload  the medium from the drive (also known as eject).  When this command is issued to a CD/DVD drive or a tape drive the media
		 will be ejected if the device supports it.

       start	 Start the device.  Some devices require a start command after a media changer has loaded new media into the device.

       stop	 Stop the device.  Some devices require a stop command prior to unloading the medium from the device when using a media changer.

       lock	 Lock the device.  Locks the device so that the medium cannot be removed manually.

       unlock	 Unlock the device.  Unlocks the device so that the medium can be removed manually.

AUTHORS

       This program was written by Robert Nelson <robertnelson@users.sourceforge.net> based on the scsitape program  written  by  Eric	Lee  Green
       <eric@badtux.org>.  Major portions of the 'mtxl.c' library used herein were written by Leonard Zubkoff.

HINTS

       Under  Linux,  cat /proc/scsi/scsi will tell you what SCSI devices you have.  You can then refer to them as /dev/sga, /dev/sgb, etc. by the
       order they are reported.

       Under FreeBSD, camcontrol devlist will tell you what SCSI devices you have, along with which pass device controls them.

       Under Solaris 7 and 8, /usr/sbin/devfsadm -C will clean up your /devices directory. Then find /devices -name 'st@*' -print  will  return  a
       list of all tape drives. /dev on Solaris is apparently only of historical interest.

BUGS AND LIMITATIONS

       There are no known bugs or limitations.

AVAILABILITY

       This version of scsieject 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://sourceforge.net/projects/mtx.

SEE ALSO

       loaderinfo(1),tapeinfo(1),mtx(1)

								   scsieject1.0 						      scsieject(1)