Dell PowerVault MD 32XX/36XX Series Storage Arrays CLI Guide

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 group command to specify the identity of the remote storage array that contains the virtual disks that hold the secondary role in the replicate relationship.

Syntax

create asyncRemoteReplicationGroup userLabel="
                                 asyncRemoteReplicationGroupName"
                                 (remoteStorageArrayName="
                                 storageArrayName" | remoteStorageArrayWwn="
                                 wwID")
                                 interfaceType=(FC | iSCSI)
                                 [remotePassword="
                                 password"
                                 syncInterval=
                                 integer (minutes | hours | days)
                                 warningSyncThreshold=
                                 integer (minutes | hours | days)
                                 warningRecoveryThreshold=
                                 integer (minutes | hours | days)
                                 warningThresholdPercent=
                                 percentValue
                                 autoResync=(TRUE | FALSE)]

Parameters

Parameter	Description
`userLabel`	The name of the new remote replication group that you want to create. Enclose the new remote replication group name in double quotation marks (" "). The name must be unique on the local and remote storage arrays.
`remoteStorageArrayName`	The name for the remote storage array on which you are replicating the remote replication group. Enclose the storage array name in double quotation marks (" "). The remote storage array must have the same connection type as the local storage array.
`remoteStorageArrayNameWwn`	The World Wide Identifier (WWID) of the remote storage array on which you are replicating the remote replication group. You can use the WWID instead of the storage array name to identify the storage array. Enclose the WWID in angle brackets (< >). The remote storage array must have the same connection type as the local storage array.
`interfaceType`	Specify which connection type to use: either Fibre Channel fabric or iSCSI interface. (The default is Fibre Channel.) The local storage array and the remote storage array must be connected through a proper Fibre Channel fabric or iSCSI interface.
`remotePassword`	The password for the remote storage array. Use this parameter when the remote storage array is password protected. Enclose the password in double quotation marks (" ").
`syncInterval`	Specify the length of time between automatically sending updates of modified data from the local storage array to the remote storage array. You can specify the length of time in minutes, hours, or days.
`warningSyncThreshold`	Specify the length of time to wait until a warning is triggered for cases in which the synchronization of all of the virtual disks within the remote replication group takes longer than the defined time. You can specify the length of time in minutes, hours, or days.
`warningRecoveryThreshold`	Specify the length of time to wait until a warning is triggered when the automatic data update for the point-in-time image on the remote storage array is older than the defined time. Define the threshold from the end of the previous update. You can specify the length of time in minutes, hours, or days. NOTE: You must set the Recovery Point Threshold to be twice as large as the synchronization interval threshold.
`warningThresholdPercent`	Specify the length of time to wait until a warning is triggered when the capacity of a replication repository virtual disk reaches the defined percentage. Define the threshold by percentage (%) of the capacity remaining.
`autoResync`	The settings for automatic resynchronization between the primary virtual disks and the secondary virtual disks of a remote replicated pair within a remote replication group. 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 `resume remoteReplicationGroup` command.

Notes

The Remote Replication premium feature must be enabled and activated on the local and remote storage arrays that will be used for replication activities.
You can use any combination of alphanumeric characters, hyphens, and underscores for the names. Names can have a maximum of 30 characters.
The local and remote storage arrays must be connected through a Fibre Channel fabric or iSCSI interface.
Passwords are stored on each storage array in a management domain. If a password was not previously set, you do not need a password. The password can be any combination of a alphanumeric characters with a maximum of 30 characters. (You can define a storage array password by using the set storageArray command.)
Depending on your configuration, there is a maximum number of remote replication groups you can create on a storage array.
Remote replication groups are created empty and replicated pairs are added to them later on. Only replicated pairs can be added to a remote replication group. Each replicated pair is associated with exactly one remote replication group.
The Remote Replication process is initiated at a defined synchronization interval. Periodic point-in-time images are replicated as only the changed data is copied and not the entire virtual disk.

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