Use of differing granularity heat maps for caching and migration

摘要

For data processing in a computing storage environment by a processor device, the computing storage environment incorporating at least high-speed and lower-speed caches, and tiered levels of storage, groups of data segments are migrated between the tiered levels of storage such that if a selected group is cached in the lower-speed cache and is determined to become uniformly hot, migrating the selected group from the lower-speed cache to the SSD portion while refraining from processing data retained in the lower-speed cache until the selected group is fully migrated to the SSD portion.

主权项

1. A method for data processing in a computing storage environment by a processor device, the computing storage environment incorporating at least high-speed and lower-speed caches, and tiered levels of storage, the method comprising:
migrating groups of data segments between the tiered levels of storage; wherein if a selected group is cached in the lower-speed cache and is determined to become uniformly hot, migrating the selected group from the lower-speed cache to a Solid State Drive (SSD) portion while refraining from processing data retained in the lower-speed cache until the selected group is fully migrated to the SSD portion; and if the selected group is cached in the SSD portion and is determined to become sparsely hot, migrating the selected group from the SSD portion to the lower-speed cache, and subsequently, migrating the selected group from the SSD portion to a Hard Disk Device (HDD).