Dell 34XX, 38XX, 32XX, 36XX manual Create Remote Replication Group

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.

Create Remote Replication Group

Description

This command creates a new, empty remote replication group on both the local storage array and the remote storage array. A remote replication group is a container that can house several replicated pairs so that they can be managed as one entity. You create a remote replication group to define the synchronization settings for all replicated pairs within the group. Each replicated pair in a remote replication group share the same synchronization settings, primary and secondary role, and write mode.

The remote replication group is associated with the local storage array and remote storage array that is used for replicating. The local storage array is the primary side of the remote replication group, while the remote storage array is the secondary side of the remote replication group. All virtual disks added to the remote replication group on the local storage array hold the primary role in the replicate relationship. Subsequently, all virtual disks added to the remote replication group on the remote storage array hold the secondary role in the replicate relationship.

Make sure that you execute the create remote replication group command on the local storage array. Remote replication group creation is initiated from the storage array that contains the virtual disks that hold the primary role in the replicate relationship. You use the create remote replication

184