IBM TotalStorage DS300 Best Practices Manual page 225

Only one default gateway can be defined. Additional routes can be set only
from CLI.
With RAID technology, data is striped across a group of physical drives. This data
distribution scheme complements the way the operating system requests data.
The granularity at which data is stored on one physical drive of the logical drive,
before subsequent data is stored on the next physical drive of the logical drive, is
called the stripe-unit size. The collection of stripe-units, from the first drive of the
logical drive to the last drive of the logical drive, is called a stripe.
You can set the stripe-unit size to 16, 32, 64, 128, 256 (the default), 512 or 1024
KB. You can maximize the performance of your TotalStorage DS300 or DS400 by
setting the stripe-unit size to a value that is close to the size of the system I/O
requests. For example, performance in transaction-based environments, which
typically involve large blocks of data, might be optimal when the stripe-unit size is
set to 64 KB or 128 KB. However, performance in file and print environments,
which typically involve multiple small blocks of data, might be optimal when the
stripe-unit size is set to 16 KB.
Chapter 5. Performance and configuration considerations
207