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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ADD DISK Command
SWAPMIRROR
specifies that the data path attributes (LOCATION, SAC, DEVICEID, PORTNAME,
LUN) of the PRIMARY path should be swapped with the MIRROR path, and the
data path attributes of the BACKUP path should be swapped with the MBACKUP
path. No other data path attributes can be specified when SWAPMIRROR is used.
SWAPMIRROR can be done online if all four paths are UP, or if exactly two paths
are UP in a symmetrical pattern (iP and M, B and MB, P and B, or M and MB).
TYPE { MAGNETIC | VIRTUAL }
is the type of disk you are adding. The default is MAGNETIC.
VOLNAME $vol
is the default volume name for the disk. This name is used when the system first
tries to start the volume. This attribute changes the volume name on the label of
the disk but does not change the system configuration database.
To use this attribute, see Changing Either the Volume Name or Alternate Volume
Name on page 6-29.
WRITEVERIFY { ON | OFF }
specifies whether the disk process should enable persistent write verify. This value
affects all disk paths that share the same SAC.
When you set WRITEVERIFY ON, you give up some system performance for a
higher level of data integrity. WRITEVERIFY ON is sometimes set automatically by
the disk process if it detects a specific error situation that needs the extra
protection.
ON The SAC does additional verification to ensure that data is written
error-free.
OFF No additional verification is done (default).