Object heatmap data tiering
Object heatmap data tiering policies can be applied to data that is frequently accessed.
With the object heatmap data tiering policies, frequently accessed objects are stored in higher-performing storage pools such as the SSD-based pool. The policy also stores objects that are not accessed frequently in slower disk-based storage pools. Data that is not required for regular access anymore is moved from slower disk-based storage pools to tapes.
The object heatmap policy
The object heatmap policy can be applied to object data files in the filesystem.
The policy manages the placement of objects in the gold, silver, and system pools and specifies the maximum threshold so that the capacity in the storage tiers is not over-utilized.
Enabling heatmap tracking
Enable heatmap tracking on the IBM Spectrum Scale™ file system by running the following
command:
mmchconfig fileheatperiodminutes=1440,fileheatlosspercent=10
mmchconfig: Command successfully completed
mmchconfig: Propagating the cluster configuration data to all
affected nodes. This is an asynchronous process.