Viewing pair synchronization rates

Thin Image User Guide

Version

9.8.6

Audience

anonymous

Part Number

MK-98RD9020-16

You can check the percentage of data that is synchronized between the P-VOL and S-VOLs. The Thin Image synchronization rate shows the rate that S-VOL data matches that of the next new generation of the S-VOL. If the S-VOL is the latest one, the synchronization rate is computed by comparing the S-VOL with the P-VOL.

The synchronization rate is a rough value, and can have a large margin of error. If the P-VOL is written to in the configuration of multiple generation (the configuration between the P-VOL and S-VOLs is 1:N), the synchronization rates for only the S-VOL of the newest generation decrease. If the S-VOL is written to, only the synchronization rates of the written generation decrease.

The following figure shows how to monitor the synchronization rates.

Note: During the Thin Image pair restoration process, the pair synchronization rate may not be up to date. The task must complete for the rate to be up to date.

For the Thin Image pair where the cascade attribute is enabled, the information displayed in Synchronization Rate (%) of the View Pair Synchronization Rate window varies depending on the pair status.

For more information about restoring Thin Image pairs, see Restoring Thin Image pairs.

In the Explorer pane, click Storage Systems, expand the storage system tree, expand Replication, and then click Local Replication.
In the Local Replication window, select a P-VOL in the TI Root Volumes tab or a snapshot group in the Snapshot Groups tab.
Click Operate TI Pairs.
In the TI Pairs window, select the pair for which you want to monitor synchronization rates, and then click More Actions > View Pair Synchronization Rate.
To check a pair's status and ensure the data is current, click Refresh.
The latest synchronization rates are shown.
Note: While the TI pair is being restored, the rate might not change. When the restoration completes, the pair synchronization is updated to 100%. For Thin Image pairs of which cascaded pairs are enabled, information displayed in Synchronization Rate of the View Pair Synchronization Rate window varies depending on the pair status.