IBM System Storage DS3000 Programming Manual page 290

syncPriority=(highest | high | medium | low | lowest)
autoResync=(enabled | disabled)
writeOrder=(preserved | notPreserved)
writeMode=(synchronous | asynchronous)
Parameters
Parameter
localVolume or localVolumes
role
force
syncPriority
autoResync
writeOrder
writeMode
Notes
When you use this command, you can specify one or more of the optional parameters. Synchronization
priority defines the amount of system resources that are used to synchronize the data between the
primary volumes and the secondary volumes of a mirror relationship. If you select the highest priority
level, the data synchronization uses the most system resources to perform the full synchronization, which
decreases the performance for host data transfers.
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IBM System Storage DS3000, DS4000, and DS5000: Command Line Interface and Script Commands Programming Guide
Description
The name of the primary volume for which you want to
define properties. You can enter more than one primary
volume name. Enclose the primary volume name in
square brackets ([ ]). If the primary volume name has
special characters, you also must enclose the primary
volume name in double quotation marks (" ").
The setting for the volume to act as the primary volume
or the secondary volume. To define the volume as the
primary volume, set this parameter to primary. To define
the volume as the secondary volume, set this parameter
to secondary. This parameter applies only when the
volume is part of a mirror relationship.
The role reversal is forced if the communications link
between the storage subsystems is down and promotion
or demotion on the local side results in a dual-primary
condition or a dual-secondary condition. To force a role
reversal, set this parameter to TRUE. The default value
is FALSE.
The priority that full synchronization has relative to host
I/O activity. Valid values are highest, high, medium,
low, or lowest.
The settings for automatic resynchronization between the
primary volumes and the secondary volumes of a
remote-mirrored pair. This parameter has these values:
v enabled – Automatic resynchronization is turned on.
You do not need to do anything further to
resynchronize the primary volume and the secondary
volume.
disabled – Automatic resynchronization is turned off.
v
To resynchronize the primary volumes and the
secondary volume, you must run the resume
syncMirror command.
This parameter defines write order for data transmission
between the primary volume and the secondary volume.
Valid values are preserved or notPreserved.
This parameter defines how the primary volume writes
to the secondary volume. Valid values are synchronous or
asynchronous.