Apple Xsan 1.1 - Manual (Page 42)

42 Chapter 2 Setting Up a Storage Area Network
Stripe Breadth: Unless you have calculated a different value for performance tuning,
leave this set to the default (256 blocks). Otherwise, change this number to the amount
of data written, in turn, to each LUN in the storage pool. For optimum performance
with Xserve RAID systems, the stripe breadth multiplied by the block allocation size
(which you set for the volume) should equal 1 MB (1048576 bytes). For more
information, see “Choosing Stripe Breadth for a Storage Pool” on page 62.
Permissions: To prevent users from modifying the contents of the storage pool,
change to Read Only.
Multipath Method: If you have two Fibre Channel connections between each client
computer and Xserve RAID system, choose how Xsan uses the connections. Choose
Rotate to have Xsan alternate between the connections for maximum throughput.
Choose Static to have Xsan assign each LUN in the storage pool alternately to one of
the connections when the volume is mounted.
3 Click OK to return to the list.
4 Repeat for each storage pool you need.