Bill,

JFS journalling doesn't journal data changes, only changes to metadata.  So in 
a filesystem with lots of file and directory creates and deletes its useful.  
In the TSM situation, such changes are rare, and so JFS doesn't buy you a lot 
in terms of recoverability.

Steve

Steve Harris
AIX and TSM Admin
Queensland Health, Brisbane Australia

>>> bill.boyer AT VERIZON DOT NET 23/01/2004 0:38:54 >>>
The "new" TSM runing guide recommends using RAW volumes for performance
reasons. I have a client that doesn't want to go RAW because the JFS logging
goes away. I'm not that AIX savy to be able to argue one way or the other
with him...

Going RAW for performance, does that take away from recoverability in the
case of system crashes or filesystem problems?

Bill Boyer
"Some days you are the bug, some days you are the windshield." - ??



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