If access status data synchronization is not used, disable the settings of the access status data synchronization function. To disable the access status data synchronization, execute the esfast heatmapsync set commands as follows:
esfast heatmapsync set -mode disable
Point
If the access status data synchronization function is set to disable, because the access status data synchronization process is not performed, the FTV access status data of the Primary Storage (active system) is not reflected in the access status data of the Secondary Storage (standby system). Using the access status data that was obtained from the Tier pool for each storage device, evaluation/relocation is performed by Automated Storage Tiering.
Therefore, immediately after a failover of the storage device, maintaining pre-failover access performance may not be possible.
