HP StorageWorks Storage Mirroring evaluation guide (T2558-96075, February 2008)

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7 X Evaluating Disaster Recovery or High Availability for Specific Data
Evaluating Disaster Recovery or High Availability for Specific Data
To protect specific data, you identify the data on the source to be included in the replication set. The connection sends that
data to the target. In the event the source fails, the replication set data will be available on the target. By itself, this connection
type provides disaster recovery. You can also configure failover to provide high availability for your data.
The data protection evaluation consists of the following tasks.
1. Checking your configuration on page 7-1
2. Establishing a connection on page 7-1
3. Monitoring the activity and completion of the initial mirror on page 7-3
4. Changing data to cause replication on page 7-4
5. Verifying the data changes on the target on page 7-5
6. Testing your target data on page 7-7
7. Configuring failover on page 7-9
8. Simulating a failure on page 7-11
9. Simulating data changes after failover on page 7-11
10. Performing failback on page 7-12
11. Restoring your data on page 7-13
Checking your configuration
Before evaluating a disaster recovery or high availability scenario for specific data, make sure you have Storage Mirroring
installed on the source and target. You should have at least 1 GB of data for testing. If you are going to be protecting application
data, make sure the application is pre-installed on the target, but that the application services are not running. If the application
services are running on the target, the files will be held open and Storage Mirroring will not be able to write to the files. In
the event of a failure, the application can be started on the target and the files can then be accessed.
Establishing a connection
1. Start the Storage Mirroring Management Console by selecting Start, Programs, Storage Mirroring, Management
Console
.
2. Click Make your first connection from the right pane of the Management Console. If that quick launch screen is no
longer visible, select
Tools, Connection Wizard.
3. The Connection Wizard opens to the Welcome screen. Review this screen and click Next to continue.
4. If you highlighted a source in the Management Console, the source will already be selected. If it is not, select the Storage
Mirroring source. This is the server where the files reside that you want to protect. Click
Next to continue.
NOTE: If the Storage Mirroring Servers root is highlighted in the left pane of the Management Console, the
Connection Wizard menu option will not be available. To access the menu, expand the server tree in the
left pane, and highlight a server in the tree.
NOTE: At any time while using the Connection Wizard, click Back to return to previous screens and review your
selections.
NOTE: Storage Mirroring will automatically attempt to log on to the selected source using the identification of the
user logged on to the local machine. If the logon is not successful, the Logon dialog box will appear
prompting for your security identification.