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

ALTER TAPE Examples
See the procedure for “Altering Tape Drive Attribute Values” (page 187).
• To alter the data compression attribute:
-> ALTER $TAPE0, COMPRESSION ON
CONTROL Command
CONTROL is a sensitive command.
CONTROL DISK Command
The CONTROL command allows the user to perform these tasks:
AttributeTask
CHECKSUMCalculate a checksum
REBUILDDFSRebuild the free-space table
POWERPower a disk on or off
POWEROFF
POWERON
REFRESHRefresh cache pages
REPLACEBOOTReplace the bootstrap program
SPAREManually spare a sector
CONTROL [ /OUT file-spec/ ] DISK $disk[-P |-M ]
[ , POOL $pool ] [ , SEL state ]
[ , SUB { ALL | MAGNETIC} ]
[ , attribute-spec ]...
Wild-card characters are supported.
OUT file-spec
directs all SCF output to the specified file.
DISK $disk[-P |-M ]
is the disk name and, optionally, the path (primary or mirror).
POOL $pool
specifies that the command is performed only on disks associated with the specified storage
pool.
SEL state
specifies that the command affects only devices in the specified state.
SUB [ { ALL | MAGNETIC } ]
specifies that the command affects only disks of the specified type.
attribute-spec
is one or more “CONTROL DISK Attributes”.
CONTROL DISK Attributes
[ , CHECKSUM [ % | %H ] lsa ]
[ , POWER { ON | OFF } ]
[ , POWEROFF ]
[ , POWERON ]
[ , REBUILDDFS ]
244 Storage Subsystem Commands