SCF Reference Manual for the Storage Subsystem (G06.28+, H06.05+, J06.03+)

You can use SCF commands to add, configure, delete, and view the partitions on a SAS disk.
These commands are:
• The “ADD PARTITION Command” (page 216) adds a new partition on a physical disk specified
by the CLIM and LUN.
• The “INFO PARTITION Command” (page 256) displays the disk partition information for the
physical disk specified by the CLIM and LUN.
• The “DELETE PARTITION Command” (page 250) deletes the last partition or all partitions on
the physical disk specified by the CLIM and LUN.
• The “ADD DISK Command” (page 194) allows you to configure a disk LDEV to a specific
partition on a physical disk.
• The “ALTER DISK Command” (page 228) allows you to alter a disk LDEV's partition either offline
or online.
• The “INFO DISK Command” (page 254) displays the partition number (if it exists) for each
path. The INFO DISK, CONFIG command provides the location of the mirror disk.
• The “INFO CLIM Command” (page 253) displays the partition number in addition to the LUN.
• The “STATUS CLIM Command” (page 280) displays the partition number in addition to the
LUN.
Partition configuration commands are separate from NonStop disk LDEV configuration commands,
so you would partition disks in this sequence:
1. Use the ADD PARTITION command to configure partitions on the physical disk. The ADD
PARTITION command with the LIKE attribute will partition a disk just like another disk.
2. Use the ADD DISK command to configure a NonStop disk LDEV to utilize each partition.
Since partition configuration commands are issued before the disk partition is configured to a
NonStop disk LDEV, the configuration commands take a physical disk location (such as primary
and backup CLIM names and LUNs) rather than a NonStop disk LDEV name.
The object of the PARTITION commands, ADD PARTITION, DELETE PARTITION and INFO
PARTITION, is a physical drive that is indicated by a pair of CLIMs and LUNs. The PRIMARYCLIM
and BACKUPCLIM attributes indicate the pair of CLIMs that are connected to the physical drive.
They can be either NonStop paths –P and –B or –M and –MB.
CAUTION:
• A mirrored disk partition must reside on drives that are partitioned exactly the same.
• The OBEYFORM option creates an obey file for configuring partitions on the disk. You can
use that obey file to recreate partitions on the replacement disk.
• When you partition a disk, be sure to make a record of your partitioning scheme if you want
to restore the partitioning scheme you used to partition the disk.
For information and considerations on mirroring partitions, refer to “Mirroring With CLIM-Attached
Disks” (page 77).
Deleting a Disk
The “DELETE DISK Command” (page 248) removes a disk from the system configuration database.
Considerations for DELETE DISK and Disks
• A disk volume must be STOPPED or not running before you can delete it.
• You can delete a mirror half of a disk volume while the disk volume is in a STARTED state.
• You cannot delete only the primary half of a mirrored volume.
Deleting a Disk 93