Specifications

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Compaq HSG80 Array Controller ACS Version 8.4 Configuration and CLI Reference Guide
Specify the READ_SOURCE=disk-name of a specific member to which you want the
controller to direct all read requests. If the member fails out of the mirrorset, the
controller selects the first normal member it finds to satisfy its read requests.
Specify READ_SOURCE=LEAST_BUSY to direct read requests to the mirrorset
disk with the least amount of work in its queue. If multiple members have equally
short queues, the controller queries normal disks for each read request as it would
when READ_SOURCE= ROUND_ROBIN is specified.
Specify READ_SOURCE=ROUND_ROBIN to sequentially direct read requests to
each mirrorset disk. The controller equally queries all normal disks for each read
request.
Examples
To add DISK10000, DISK20100, and DISK30200 as a mirrorset with the name
MIRR1, type:
ADD DISK DISK10000 1 0 0
ADD DISK DISK20100 2 1 0
ADD DISK DISK30200 3 2 0
ADD MIRRORSET MIRR1 DISK10000 DISK20100 DISK30200
The following example shows how to create a host-addressable unit after the mirrorset
MIRR1 has been created:
INITIALIZE MIRR1
ADD UNIT D104 MIRR1