Environment:  AIX 6.1, TSM 5.5.4

We've been backing up a couple of NAS filers via NDMP for around 18 months but 
recently find that sending the data to a storage pool of 12 500G rlv-formatted 
disks has been diagnosed by L2 as the cause of occasional problems with the 
recovery log when it changes volumes -- holding the recovery log too long and 
crashing the instance.

The rlv disk data has been moved off in preparation to rebuild the disks as 
FILE devclass volumes...but think I remember reading something about TOCs being 
troublesome/incompatible with that config?  Since one of these NAS boxes has 
millions (literally, I'm told) of small documents -- versions of which are 
required to be kept forever -- TOC is a a 'must-have' for file level restore, 
else we would have to restore the whole filesystem, the largest of which has 
about 5-6TB in use.

Is anyone using NDMP writing to file devclass with TOC successfully?  (any 
suggestions on MAXCAP?  default is 4M which seems 'small')

Side issue:  think I heard there's no data export upgrade path for NDMP...'take 
a fresh full backup' isn't going to work for millions of keep-forever 
documents...we are planning to move to AIX 7.1 and TSM 6.2.x later this year 
when the new hardware arrives so this will be upon us soon.  Any comments/ideas?

Thanks, Susie