I have 2 sl500 tape libraries attached via dark fiber (which doesn't appear to 
be getting anywhere close to the speeds it should but that's another issue) to 
an AIX TSM 5.5 server.  One is copy storage pool and the other a primary. I 
backup the primary to the copy storage pool daily. This process is taking an 
extremely long time and seems to hang because there is at least one extremely 
large file that while it is copying, pins the recovery log and does not finish 
before the recovery log is over 80% which then causes TSM to slow to a crawl so 
I end up cancelling the backup storage pool process.  This is hanging my TSM 
server on a daily basis because the recovery keeps getting pinned by the backup 
storage process.
Is there any way at all I can find out what node or node and filespace, is 
taking so long to backup so I can verify it really needs to be backed up at all?