Measure Reference Manual

DISC
The DISC entity provides information about one or more disks on the local system.
NOTE: The keyword DISK is interchangeable with DISC in any MEASCOM command.
PageTopic
189Entity specification syntax for DISC entities
191DDL records for DISC entities
194DDL field definitions for DISC entities
206Usage notes for DISC entities
208Examples of DISC measurements
Entity Specification Syntax for DISC Entities
To describe DISC entities:
DISC entity-spec [, entity-spec ] ...
DISC
collects information about one or more disks in the local system.
entity-spec
is specified as:
{ * }
{ $disc [ ( cpu [ , svnet [ , group [ , module [ , slot
[, scsi-id ] ] ] ] ] ) ] }
or for disks with multiple paths only, specified as:
{ $disk[path] }
or for CLIM-attached disks only, specified as:
{ $disc [ ( cpu [, svnet [, sac [, lun [, partition ] ] ] ] ) ] }
or for listing D-series data only, specified as:
{ $disc [ ( cpu [, channel [, controller [, unit ] ] ] ) ] }
where:
*
measures all disks in all CPUs. If any specifiers follow the asterisk (*), you must use $*.
$disc
is the name of the disk to be measured. To indicate all disks, use an asterisk (*).
cpu
is the number of the CPU in which the disk is configured. The default is all CPUs. To indicate
all CPUs, use an asterisk (*).
svnet
(G-series and later RVUs) is the ServerNet fabric used by this specific path to the device.
The Measure subsystem measures all disk records relative to the specified fabric. The value
is 0 for X fabric, 1 for Y fabric. The default is to measure records for both fabrics.
Disks connected by a ServerNet/DA do not have an X or Y fabric. To indicate these disks,
use an asterisk (*). In this case, you can use an asterisk (*) in the LISTACTIVE command
as long as the rest of the entity specification describes one disk.
DISC 189