Hi !

I am having troubles with an Optical Library attached to a TSM Server for 
AIX-RS/6000.

Problem Description :

Every time the server or an administrator defines a new optical volume ( 
private or scratch ), it is created by TSM with only 1 writable side despite 
the fact it is being used a two-sided 5.25-inch rewritable optical cartridge 
with both sides not write-protected and with its capacity fully recognized ( 
5200MB ).  As a consequence of it, every time a volume reaches the 50% mark in 
its Pct. Util. the server issues the message ANR8462I ( End-of-Side reached for 
optical volume ) and then the whole transaction fails because according to the 
server there is no space available, that is, the server does not access the 
second side of the volume in order to complete the transaction ( backup or 
archive ).

Why the server does not recognize as writable the second side of the cartridges 
used ?
On what other parameters the number of writable sides per volume depend, 
besides the device type configured ?
What has to be done to make the server able to recognize as writable the second 
side of the volumes defined?

Problem Specifics :

Operating System    : AIX 4.3
System Model         : IBM,7025-F50
Server Type             : AIX-RS/6000
Server Version         : Tivoli Storage Manager 4.1.0.0
Library Type            : SCSI ( Automated Library ) with two drives.
Library Model          : Optical Library IBM 3995 C60
Device Type Used    : OPTICAL
Recording Format    : 5200MB
Media Used            : IBM Rewritable Optical Disk Cartridges ( P/N : 59H4786 )


Please, any clue about how to overcome such a problem will be greatly 
appreciated.

Any other info needed about the nature of problem will be immediately given.


Best Regards,

Hernando Ramirez Castilla
hramirez AT elsitio.net DOT co