Hitachi USP V, Configuration Manual, Page: 44 / 70

3-2 Configuring the New Disk Devices
Hitachi Universal Storage Platform V/VM Configuration Guide for SGI
®
IRIX
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Host Attachment
Partitioning the Disk Devices
After new device recognition has been verified, partition the new SCSI disk
devices using the
fx utility (see Figure 3-1 and Figure 3-2 ). After setting the
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.