Striping on striping - good, bad, indifferent?

I'm setting up a Logical Volume which will consist of two identical
hdisks. Each hdisk will actually be a hardware RAID10 array. (SSA in
this case, though the underlying hardware technology shouldn't matter.)

Within AIX JFS2, should I stripe between those two hdisks, or not? The
application will be /var/spool/mail, so very few of the reads or writes
will exceed the PP size of the VG. Are there any peculiar issues here to
be aware of, such as the relationship of the hardware (SSA) stripe size
to the AIX JFS2 stripe size?

What I am hoping for is to get the benefits of striping across all the
physical disks in both of the arrays, thereby overcoming the 8-way
stripe limit in SSA.

Roger Deschner University of Illinois at Chicago rogerd@xxxxxxx
==== "Research is what I'm doing when I don't know what I'm doing." ====
========================= -- Wernher von Braun =========================

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