SCF Reference Manual for the Storage Subsystem (G06.27+, H06.04+)

Disk Load Balancing
SCF Reference Manual for the Storage Subsystem—529937-008
8-9
PRIMARY Command Function in G06.00 Through
G06.10
1. Before the PRIMARY command is issued, the status of $D0203 is:
In the figures that follow:
•
SACs owned by processor 2 are shaded.
•
Disk processes that are primaried in processor 2 are shaded.
•
Primary paths are the bold lines.
•
Backup disk processes are represented with a prime mark, such as $D0201'.
2. Move the primary disk process of another disk in the same topology branch to
processor 3:
-> PRIMARY $D0201, 3
STORAGE - Status DISK \WAGER.$D0203-*
LDev Path Status State Substate Primary Backup
PID PID
105 PRIMARY ACTIVE STARTED 2,22 3,16
105 BACKUP INACTIVE STARTED 2,22 3,16
105 MIRROR ACTIVE STARTED 2,22 3,16
105 MIRROR-BACKUP INACTIVE STARTED 2,22 3,16
-M
-P
-P
-M-MB
-B
-B
Processor 2
X Y
SCSI Bus 2
SAC 1
SCSI Bus 1
SAC 1
SAC 2
SAC 2
Processor 3
X Y
X
Y
-MB -MB -M
-B -P -B -P -B
-P
$D0201-M
$D0203-M $D0205-M $D0208-P
$D0201-P $D0203-P $D0205-P $D0207-P
$D0201
$D0203
$D0205
$D0207
$D0208
$D0201'
$D0203'
$D0205'
$D0207'
$D0208'
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