International Business Machines Corporation
Integration of application indicated minimum time to cache to least recently used track demoting schemes in a cache management system of a storage controller

Abstract:

A minimum retention time in cache is indicated for a first plurality of tracks, where no minimum retention time is indicated for a second plurality of tracks. A cache management application demotes a track of the first plurality of tracks from the cache, in response to determining that the track is a least recently used (LRU) track in a LRU list of tracks in the cache and the track has been in the cache for a time that exceeds the minimum retention time.