CLI Guide

Parameter Description
autoResync
The settings for automatic resynchronization
between the primary virtual disks and the
secondary virtual disks of a remote replication pair.
This parameter has these values:
• enabled—Automatic resynchronization is
turned on. You do not need to do anything
further to resynchronize the primary virtual disk
and the secondary virtual disk.
• disabled—Automatic resynchronization is
turned off. To resynchronize the primary virtual
disk and the secondary virtual disk, you must
run the
start asyncReplicationGroup
command.
writeOrder
The write order for data transmission between the
primary virtual disk and the secondary virtual disk.
Valid values are preserved or notPreserved.
writeMode
How the primary virtual disk writes to the
secondary virtual disk. Valid values are
synchronous or asynchronous.
Notes
Names can be any combination of alphanumeric characters, hyphens, and underscores. Names can have
a maximum of 30 characters.
When the primary virtual disk and the secondary virtual disk are chosen, the secondary virtual disk must
be of equal or of a greater size than the primary virtual disk. The RAID level of the secondary virtual disk
does not have to be the same as that of the primary virtual disk.
Passwords are stored on each storage array in a management domain. If a password was not previously
set, a password is not needed. The password can be any combination of alphanumeric characters with a
maximum of 30 characters. (A storage array password can be defined by using the set storageArray
command.)
Synchronization priority defines the amount of system resources that are used to synchronize the data
between the primary virtual disk and the secondary virtual disk of a replication relationship. If the highest
priority level is selected, the data synchronization uses the most system resources to perform the full
synchronization, which decreases performance for host data transfers.
The writeOrder parameter applies only to asynchronous replications and makes them become part of a
consistency group. Setting the
writeOrder parameter to preserved causes the remote replication pair
to transmit data from the primary virtual disk to the secondary virtual disk in the same order as the host
writes to the primary virtual disk. In the event of a transmission link failure, the data is buffered until a full
synchronization can occur. This action can require additional system overhead to maintain the buffered
data, which slows operations. Setting the writeOrder parameter to notPreserved frees the system
from having to maintain data in a buffer, but it requires forcing a full synchronization to make sure that
the secondary virtual disk has the same data as the primary virtual disk.
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