Partitioning The Disk Devices - Hitachi Universal Storage Platform V Configuration Manual

Partitioning the Disk Devices

After new device recognition has been verified, partition the new SCSI disk
devices using the fx utility (see
partitions for a device, verify the partitions using the prtvtoc command (see
Figure 3-3).
Available partitions: The IRIX system controls disk devices using partitions.
One LU can be divided into a maximum of sixteen partitions (primary partition
0 through 15). The maximum capacity per partition is not limited. Partition #8
(vh) and partition #9 are reserved and are used for storing disk management
information. Partition #10 is also reserved. Therefore, the number of available
partitions per device is thirteen (0-7 and 11-15).
WARNING: Do not partition or label a disk device that will be accessed as a
raw device (e.g. some database applications use raw devices).
Note: Do not change partitions 8, 9, or 10. Set the partitions (except partition
10) so that no partition is set on top of another partition. Because partition 8
usually uses parts between 0 and 6, set that base of first setting partition is 6.
3-2
Hitachi Universal Storage Platform V/VM Configuration Guide for SGI
Figure 3-1
Configuring the New Disk Devices
and Figure 3-2). After setting the
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IRIX Host Attachment