SCF Reference Manual for the Storage Subsystem (G06.24+, H06.03+)

Storage Subsystem Commands
SCF Reference Manual for the Storage Subsystem—529937-007
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ALTER DISK Command
MIRRORLUN number
specifies the logical unit number (LUN) on the Enterprise Storage System.
The ESS administrator must give you the LUN so that you can specify it in this
attribute.
The default value for MIRRORLUN is 0.
MIRRORPORTNAME number
specifies the Fibre Channel port name (WWN) used by the path to a mirror disk
volume on an Enterprise Storage System (ESS).
The ESS administrator must give you the WWN so that you can specify it in this
attribute.
Enter number as a 16 character hexadecimal number, without a leading %H.
MIRRORSAC { number | name }
(mirrored 45xx and M8xxx disks only) is the SAC that controls the mirror path to
the disk.
NONAUDITEDINSERT { ON | OFF }
(magnetic disks) specifies whether nonaudited insert mode is enabled (ON) or
disabled (OFF).
NUMDISKPROCESSES number
is the number of disk processes allocated for the disk. number is in the range 1
through 8. The default is 4.
number Is the SAC subdevice number on the adapter.
name Is the full name of the SAC location including the SAC number. For
example:
SNDA.SAC-1.GRP-1.MOD-1.SLOT-53
FCSA.SAC-1.GRP-11.MOD-2.SLOT-5
ON enhances performance by buffering insertions to entry-sequenced
files or relative-sequenced files that do not have the REFRESH
attribute set and are open with a SYNCDEPTH greater than 0. This
feature is known as nonaudited insert mode.
However, the resulting reduction in the frequency of label updates
potentially increases the probability of data loss in the event of a
double disk failure.
OFF disables nonaudited insert mode (default). This option forces write
inserts, which increase EOF.