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

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Disk Load Balancing

SCF Reference Manual for the Storage Subsystem—529937-008

8-5

A Closer Look at Eight Disks

Looking more closely at the disks in the group 02 processor cabinet, this configuration

is an ideal situation for G06.11 and later RVUs:

•

Processor 2 controls these disks (shaded):

The primary disk processes for mirrored disks $D0201 and $D0203

The backup disk process (represented with a prime mark, ') for mirrored disk

$D0205'

The backup disk processes for nonmirrored disks $D0207' and $D0208'

•

Processor 3 controls these disks (white):

The backup disk processes (represented with a prime mark, ') for mirrored

disks $D0201' and $D0203'

The primary disk process for mirrored disk $D0205

The primary disk process for nonmirrored disks $D0207 and $D0208

•

Each processor controls one SAC.

-P

Processor 2

X Y

SCSI Bus 2

SAC 1 SCSI Bus 1 SAC 1

SAC 2

$D0203-P$D0201-P

$D0207-P

$D0205-P

$D0201-M

$D0205-M

$D0203-M

$D0208-P

Processor 3

X Y

-MB -M -MB -M -M -MB

-P -B

-P -B -B -P -B -P

-B

$D0201

$D0203

$D0205'

$D0207'

$D0208'

$D0201'

$D0203'

$D0205

$D0207

$D0208

VST498.vsd

SAC 2