> I have 2 raid-5 sets with 1 volume of a storage pool sitting on each raid
> set. I am noticing that when I backup that I don't write to both volumes
> all the time in parellel. My network through put isn't limiting me. Is
> there any way to force tsm to write to both volumes in a storage pool at the
> same time. Effectively doubling my through put.
>From my observations, I believe that TSM tries to place each user
file on a single disk volume. Thus, it you have only one backup
process running, TSM will write to only one disk. If you have two
backups running, then there is a good probability that TSM will
write the first user's file to disk 1, and the the second user's file to
disk2.
TSM also appears to place equal amounts of data on each disk
volume. Thus, if you have only one backup process running and
the files are all about the same size, you will observe that the first
file will go to disk 1, the second file to disk 2, the third file to disk
1, and so on.
Mike Hull [EMAIL PROTECTED]
Systems and Automation Analyst 613-562-5800 x 4587
Computer Centre / 136 Jean-Jacques Lussier Room 543
University of Ottawa / Ottawa, Ontario / Canada K1N 6N5
