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DR Series Software 3.2.6 - Administrator Guide

Introduction to the DR Series System Documentation Understanding the DR Series System Setting Up the DR Series System Hardware Configuring the DR Series System Settings Managing DR Series Storage Operations Monitoring the DR Series System Using Global View Using the DR Series System Support Options Configuring and Using Rapid NFS and Rapid CIFS Configuring and Using Rapid Data Access with Dell NetVault Backup and with Dell vRanger Configuring and Using RDA with OST
Understanding RDA with OST Guidelines Terminology Supported RDA with OST Software and Components Best Practices: RDA with OST and the DR Series System Setting Client-Side Optimization Configuring an LSU Installing the RDA with OST Plug-In Configuring DR Series System Information Using NetBackup Backing Up Data From a DR Series System (NetBackup) Using Backup Exec With a DR Series System (Windows) Understanding the OST CLI Commands Understanding RDA with OST Plug-In Diagnostic Logs Collecting Diagnostics Using a Linux Utility Guidelines for Gathering Media Server Information
Configuring and Using VTL Configuring and Using Encryption at Rest Troubleshooting and Maintenance Supported Ports in a DR Series System Getting Help

This topic describes using the DR Series system to manage data replication operations. Replication operations include various tasks, such as creating new replication relationships, managing or deleting existing replication relationships, starting and stopping replication, setting a replication bandwidth limit per host, displaying current replication statistics, and setting a replication schedule.

The Replication page displays current information about replication relationships for the DR Series system. It lists the following information for all current replication relationships:

•
Storage Container Name
•
Replica Container
•
Cascaded Replica Container (if one exists)
•
Status of each container
•
Peer State, Estimated time to Sync, Network Savings, Encryption, Bandwidth and Schedule Status
 
NOTE: Bandwidth is the replication bandwidth limit that you can set as Kibibytes per second (KiBps), Mebibytes per second (MiBps), Gibibytes per second (GiBps), or as an unlimited bandwidth (default).

If no existing containers, replication relationships, or any scheduled replication operations have been added for the DR Series system, the only Replication-related option that is enabled on the Replication page is Create.

TCP Port Configuration

If you plan to perform replication operations across a firewall, the DR Series system replication service requires that the following fixed TCP ports be configured to support replication operations:

•
port 9904
•
port 9911
•
port 9915
•
port 9916

Before you Begin

Refer to the following important notes and guidelines for understanding and using replication in the DR Series system.

•
DMAs and Domain Relationships

— To allow replication storage information to be viewed by a corresponding data management application (DMA), the target DR Series system must reside in the same domain as the source DR Series system in the replication relationship.

•
Replication Limits —

Refer to the Dell DR Series System Interoperability Guide for details about the supported system limits for replication per DR Series system model. For a definition of connections and streams, see Streams_vs_Connections.

•
Version Checking — The DR Series system software includes version checking that limits replication only between other DR Series systems that run the same system software release version. If versions are incompatible, the administrator will be notified by an event, and replication will not continue.
•
Storage Capacity and Number of Source Systems — Be aware that the storage capacity of the target DR Series system is directly affected by the number of source systems writing to its containers, and also by the amount being written by each of these source systems.
•
VTL Replication — Replication of VTL containers is currently not supported; however, it is planned for a future release of the DR Series system.
•
MTU Setting — Primary and secondary replication targets should have the same network maximum transmission unit (MTU) setting. See the topic, “Configuring Network Settings,” for more information about this setting.
 
 
Parent topic 

Creating Replication Relationships

Creating Replication Relationships

To create a new replication relationship, complete the following steps.

Select Storage > Replication.
2.
Click Create in the options bar.
The Create Replication page is displayed.
3.
Under Source Container, define the source container by doing the following.
a.
Click Select container from local system or Select container from remote system, and select a container. (For a remote system, you will need to provide user credentials for the remote system.)
b.
Under Source Container > Replica Container, for Encryption, select one of the following encryption options: None, 128–bit, or 256–bit.
c.
For Bandwidth Speed Rate, select the bandwidth as Default or specify a rate.
 
NOTE: Bandwidth is the replication bandwidth limit that you can set as Kibibytes per second (KiBps), Mebibytes per second (MiBps), Gibibytes per second (GiBps), or as an unlimited bandwidth (default). The minimum allowed replication bandwidth that you can set is 192 KiBps.
4.
Under Replica Container, define the target replica container by doing the following.
a.
Click Select container from remote system and then select a container for the replication from the remote system.
b.
Enter the user logon credentials of the remote system.
c.
Click the Retrieve Remote Container button and, in the drop-down list, select a remote container from the list of available containers.
5.
To set up cascaded replication (optional), define the cascaded replication by doing the following.
a.
Under Cascaded Replica Container, click Select a container from the remote system to select the container you will be using for the cascaded replica.
b.
Enter the logon credentials of the remote system.
c.
Click the Retrieve Remote Container button, and, in the drop-down list, select a remote container from the list of available containers.
d.
Under Replica > Cascaded Replica Container, for Encryption, select one of the following encryption options: None, 128–bit, or 256–bit.
e.
For Bandwidth, select the Bandwidth Speed Rate as Default or specify a rate.
6.
Click the Create Replication button.
Parent topic 

Modifying Replication Relationships

Modifying Replication Relationships

You can modify the following replication settings: bandwidth, encryption, and remote container’s IP address/host name settings. To modify settings for an existing replication relationship, complete the following steps.

CAUTION: Exercise care when configuring the direction of replication for source and target containers. For example, target containers can have their contents deleted if they contain existing data.
 
NOTE: Because you cannot modify an existing defined role (source or target replica) for a replication relationship, if necessary, you must delete the existing replication relationship, and then recreate a new relationship with the specific source and target roles that you want.
1.
Select Storage→ Replication.
The Replication page is displayed, which lists all current replication entries
2.
Select the replication relationship that you want to modify, and click Edit in the options bar.
The Edit Replication dialog is displayed.
3.
Modify the settings/values for the Source, Replica, or Cacscaded Replica containers as needed.
a.
To modify the bandwidth rate, next to Bandwidth Speed Rate, select the bandwidth as Default or specify a rate.
Bandwidth is the replication bandwidth limit that you can set as Kibibytes per second (KiBps), Mebibytes per second (MiBps), Gibibytes per second (GiBps), or as an unlimited bandwidth (default). The minimum allowed replication bandwidth setting that you can configure is 192 KiBps.
b.
To modify the encryption setting, select one of the following Encryption values for the Source Container > Replica Container or Replica > Cascaded Replica Container as needed: None, 128–bit, or 256–bit.
c.
To modify a remote container’s IP address/host name settings, under Replica Container or Cascaded Replica Container, modify the user logon credentials of the remote system as needed.
4.
Click Save Replication.
The Successfully updated replication dialog is displayed when updates have been saved.
Parent topic 

Deleting Replication Relationships

Deleting Replication Relationships

To delete an existing replication relationship, complete the following:

Select Storage > Replication.
The Replication page is displayed.
2.
Select the replication relationship that you want to delete, and click Delete in the options bar.
The Delete Replication dialog is displayed.
3.
Select the relationships you want to delete for the Source Container > Replica Container and/or the Replica Container > Cascaded Replica Container, and then click OK in the Delete replication dialog (or click Cancel to display the Replication page).
The Successfully deleted replication dialog is displayed when successful.
 
NOTE: If the deletion fails, you can use the Force option to force removal of the relationship.
Parent topic 
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