SCF Reference Manual for the Storage Subsystem (G06.27+, H06.04+)
Configuring Magnetic Disks
SCF Reference Manual for the Storage Subsystem—529937-008
6-13
Configuring Mirrored Disks
Configuring Mirrored Disks
The mirroring examples in this section are based on internal SCSI disks. If you are
mirroring model 45xx or M8xxx disks, you also need to specify PRIMARYDEVICEID,
BACKUPDEVICEID, MIRRORDEVICEID, and MBACKUPDEVICEID attributes.
For considerations for the type of disk you are mirroring, see Mirrored Disk Placement
on page 6-12 and Considerations for M8xxx Fibre Channel Disks on page 6-3
Configuring Internal Mirrored Magnetic Disks to Revive
Automatically
The AUTOREVIVE attribute affects the start behavior of internal mirrored disks
differently depending on the object type specified:
•
AUTOREVIVE for the SUBSYS object type (page 14-63):
-> ALTER SUBSYS $ZZSTO, AUTOREVIVE ON
If AUTOREVIVE is ON for the storage subsystem, automatic revive operations are
allowed. If AUTOREVIVE is OFF for the storage susbsytem, automatic revive
operations are not allowed.
AUTOREVIVE for the SUBSYS overrides AUTOREVIVE for the PROFILE.
•
AUTOREVIVE for the DISK object type (see page 14-13):
-> ALTER DISK $DATA2, AUTOREVIVE ON
For an individual disk, this attribute controls whether a disk is automatically revived
after insertion or at system load or processor reload. AUTOREVIVE for disk only
occurs if AUTOREVIVE for SUBSYS is also turned ON
These attributes interact as follows:
You might want to use this configuration scheme:
•
Configure your system to have disks revive automatically (by setting
AUTOREVIVE ON for the subsystem).
•
Make exceptions where you want some disks to not revive automatically (by
setting those disks to AUTOREVIVE OFF).
DISK
AUTOREVIVE ON
DISK
AUTOREVIVE OFF
SUBSYS
AUTOREVIVE ON
Autorevive after:
•
System load Yes
•
Disk insertion Yes
Autorevive after:
•
System load No
•
Disk insertion No
SUBSYS
AUTOREVIVE OFF
Autorevive after:
•
System load No
•
Disk insertion No
Autorevive after:
•
System load No
•
Disk insertion No