5 

Monitoring & Maintenance

Once you have begun creating GDR pairs and consistency groups, you may want to adjust or change certain parameters for more effective GDR management and utilization.

Journal Volumes

You can change a journal volume’s alias and threshold.

To configure journal properties:

1.	From the Journals View pane, right click on the journal volume to modify and select Properties.

Figure ‎5-1. Journals Quick Launch

Figure ‎5-2. Journals Properties Menu

The Properties dialog box opens (Figure ‎5-3).

2.	Configure the Volume Alias and Threshold.

3.

Click OK.

Figure ‎5-3. Journal Volume Properties

Note: You can resize the size of a journal. For more information see Resizing Volumes. You can also add a mirror copy of the journal. For more information see Online Copy

Consistency Groups

Changing/Displaying Consistency Group Properties

You can view all details of a consistency group, including number of PITs waiting to be transferred and number of GDR pairs.

To view consistency group properties:

1.	From the Policies pane, select the consistency group.

2.	Right click and select Properties.

Figure ‎5-4. Consistency Group Properties Menu

Figure ‎5-5. Consistency Group Properties

Deleting a Consistency Group

To delete a Consistency Group:

	Delete all the pair in the Consistency Group (see Deleting a GDR Pair).

After the last pair has been deleted the system will delet the Consistency group.

GDR Pairs

You can change the Init. Sync. type for a GDR Pair. Additionally, you can view GDR pair details, including number of PITs waiting to be transferred and GDR pair state.

Changing/Displaying Pair Properties

To change/display GDR Pair properties:

1.	From the Pair Details pane, select the GDR pair.

Figure ‎5-6. Pair Details Menu

2.	Right click and select Properties.

The Properties dialog box opens.

3.	If desired, change the Initial Synchronization Type.

Figure ‎5-7. Synchronous Pair Properties

Figure ‎5-8. Asynchronous Pair Properties

Start/Abort Replication

Once replication has started, you can abort the replication of a GDR pair.

To abort replication:

	Select the GDR pair, right click and select Replicate >Abort

Replication is aborted.

To start replication:

	Select the GDR pair, right click and select Replicate > Start

Replication starts.

Initial Sync Operations

You can start or stop the initial sync for a Sync pair (replication will continue). You cannot stop the initial sync of an Async pair (to stop initial sync for an Async pair, abort replication).

Figure ‎5-9. Initial Sync Action

Note: Initial Sync for an Async pair will stop if replication is aborted. Starting replication for this Async pair will restart the initial synchronization from the beginning and not from where it was stopped.

 

To end offline initial sync for an Async pair:

	From the Pair Details pane, select the GDR pair, right click and select Initial sync. >End

Deleting a GDR Pair

Before you can delete a GDR pair you must first abort the replication of the pair. See Start/Abort Replication.

To delete a GDR pair

1.	From the Pair Details pane, select the GDR pair to delete.

2.	Right click and select Delete.

Figure ‎5-10. Delete GDR Pair

PIT Statistics

PITs: exist per Consistency Group as well as for individual pairs. You can monitor the Point-In Time created for the asynchronous replication process.

To view PIT status:

1.	From the GDR pane, select the desired pair.

2.	Right click and select PIT Management > Show Pits…

Figure ‎5-11. PIT Management

The PITs table for GDR policy appears.

3.	Select the desired pair. The PITS details are shown in the bottom part of the screen.

Figure ‎5-12. PITs Table for GDR Policy