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
Virtual Disk Attributes
[ , ANTCAPACITY number ]
[ , BACKUPCPU number ]
[ , CACHESIZE number ]
[ , HIGHPIN { ON | OFF } ]
[ , MODE { NOISY | QUIET } ]
[ , PRIMARYCPU number ]
[ , PROGRAM [[$vol.]subvol.]fileid ]
[ , STARTSTATE { STARTED | STOPPED } ]
ANTCAPACITY number
is the maximum number of entries in the virtual-disk, audited-name table. number
is in the range 0 through 2500000. The default is 12288.
The value of this attribute must be large enough to hold not only the temporary and
permanent files to be created on the virtual disk but also the normal overhead
associated with key-sequenced files, as documented in the Enscribe
Programmer’s Guide.
BACKUPCPU number
is the processor in which the backup IOP starts. The process must be in the
STOPPED state or not running for you to alter this attribute.
CACHESIZE number
is the number of entries of the name cache of the virtual disk process. The name
cache is used to hold entries in the audit-name table. number is in the range 0
through 50000. The default is 0.
Avoid making the cache too small, which can adversely affect file-management
operations (such as FILE_OPEN_ and file information requests) serviced by a
virtual disk process.
HIGHPIN { ON | OFF }
specifies whether the IOP can run at a high PIN (ON, the default) or only at a low
PIN (OFF).
MODE { NOISY | QUIET }
specifies whether to generate additional EMS messages for debugging.
PRIMARYCPU number
is the processor in which the primary IOP starts. The process must be in the
STOPPED state or not running for you to alter this attribute.
NOISY Generate additional EMS messages for debugging.
QUIET Generate only essential EMS messages (default).