Easy Tier heat map transfer

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The IBM® DS8000® Easy Tier® heat map transfer function transfers heat map information from a source storage system to one or more target storage systems. Each target storage system then generates volume migration plans based on the heat map data and the physical configuration of the storage system.

This process ensures that the performance characteristics of the target storage systems are consistently updated to reflect the performance characteristics of the source storage system.

The Easy Tier heat map transfer function is available for IBM DS8000 Release 7.1 and later.

You can enable heat map transfers for IBM DS8000 storage systems from the IBM Copy Services Manager graphical user interface (GUI). The storage systems must meet the following requirements:
  • The source and target storage systems must be connected to Copy Services Manager by using a Hardware Management Console (HMC) connection.
  • The Easy Tier heat map transfer function must be enabled on the source and target storage systems. If the function is disabled on either the source or target storage system, an error is displayed when the next transfer is attempted.

To enable, disable, and configure heat map transfers, see Configuring the use of the Easy Tier heat map transfer function.

Important:

When you enable or disable the use of the Easy Tier heat map transfer function in Copy Services Manager, the function is not enabled or disabled on the storage systems that are connected to Copy Services Manager. The configuration options that you set for Easy Tier heat map transfer in Copy Services Manager are used only by Copy Services Manager.

Do not manage heat map transfers for the same IBM DS8000 storage systems from multiple Copy Services Manager servers. Doing so causes transfers to occur more frequently than the default transfer schedule, which is 12 hours after the previous transfer.

Easy Tier heat map transfer log files

Easy Tier heat map transfer log files are in the install dir\liberty\wlp\usr\servers\csmServer\logs\ethmt\log\ directory for distributed systems and in the path_prefix/opt/IBM/CSM/wlp/usr/servers/csmServer/logs/ethmt/log directory for z/OS systems. If a problem related to the Easy Tier heat map transfer function occurs, you can send these log files to IBM Software Support for troubleshooting purposes.