SCF Reference Manual for the Storage Subsystem (G06.24+, H06.03+)
Configuring Magnetic Disks
SCF Reference Manual for the Storage Subsystem—529937-007
6-22
Altering Magnetic Disk Attribute Values
Altering Magnetic Disk Attribute Values 
Use the ALTER DISK Command (page 14-51) to change configured attributes for 
magnetic disks. 
Considerations for ALTER DISK and Magnetic Disks 
•
To change these attributes, first put the disk in the STOPPED state by using the 
STOP DISK Command (page 14-148): 
•
If a nonmirrored disk is in STARTED state, you can add a mirror drive by altering 
the appropriate MIRROR and MBACKUP path attributes.
•
When changing these attributes, the IOP is not forced to stop: 
•
To change the VOLNAME or ALTNAME attributes, see Naming a Magnetic Disk on 
page 6-26. 
•
When specifying attributes to add a physical volume to a storage pool:
°
The pool process and CATALOGLOCATION volume must be in the STARTED 
state. 
°
The CATALOGLOCATION volume must be protected by TMF. 
•
When using the AUTOSELECT and PHYSVOLSELECT attributes: 
°
The pool process and CATALOGLOCATION volume must both be in the 
STARTED state. 
°
The CATALOGLOCATION volume must be enabled by TMF. 
°
The physical volume must be in the STARTED state. 
ALTNAME MBACKUPLOCATION PRIMARYLOCATION
BACKUPDEVICEID MBACKUPPORTNAME PRIMARYLUN
BACKUPCPU MBACKUPSAC PRIMARYPORTNAME
BACKUPDEVICEID MIRRORDEVICEID  PRIMARYSAC
BACKUPLOCATION MIRRORLOCATION  PROTECTDIRECTORY 
BACKUPPORTNAME  MIRRRORLUN PROGRAM 
BACKUPSAC MIRRORPORTNAME SERIALWRITES 
HIGHPIN MIRRORSAC SQLMXBUFFER
LABEL PRIMARYCPU VOLNAME 
MBACKUPDEVICEID PRIMARYDEVICEID
AUDITTRAILBUFFER LKIDLONGPOOLLEN  NONAUDITEDINSERT
CBPOOLLEN LKTABLESPACELEN NUMDISKPROCESSES 
FSTCACHING MAXLOCKSPEROCB OSSCACHING 
HALTONERROR MAXLOCKSPERTCB 










