HP NetRAID-4M Controller - Manual (Page 157)

7-7
Working With Single-level Containers
Understanding the Stripe Set Attributes You Can Specify
You use the container create stripe command to create a
stripe set. Before creating a stripe set, consider the following stripe
set attributes you can specify:
■ freespace
■ stripe size
■ raw container cache
■ container label
Specifying Freespace When Creating a Stripe Set
A stripe set’s size is created from freespace. To specify freespace
when creating a stripe set, use the
container create stripe
command. There must be enough freespace available on your disk
or disks to create a container of the desired size. See Understanding
Freespace in Chapter 6, Working with Container Attributes, for
information on freespace.
In the following example, the container create stripe
command creates a stripe set on SCSI device (2,1,0) using 100MB
(megabytes) of freespace.
HPN0> container create stripe ((2,1,0), 100M)
Executing: container create stripe ((CHANNEL=2,ID=1,LUN=0),
104,857,600)
Container 0 created
Specifying Stripe Size When Creating a Stripe Set
The stripe size attribute indicates the number of bytes in a
stripe. Stripe size is the amount of data written to a partition before
the I/O data stream switches to the next partition in the stripe set.
The stripe size can be 8 KB, 16 KB, 32 KB, or 64 KB. The default
stripe size is 32 KB. You need to determine the stripe size that is
most suitable for your environment. Note that you can use the
container reconfigure command at a later time to change the
stripe size. See the container reconfigure command in
Working with Container Reconfiguration in Chapter 9, Modifying
Containers, for a description of the
container reconfigure
command. You display the stripe size of a stripe set using the
container list command. See Understanding How to Create a