Writing adjacent tracks to a stride, based on a comparison of a destaging of tracks to a defragmentation of the stride

摘要

Compressed data is maintained in a plurality of strides of a redundant array of independent disks, wherein a stride is configurable to store a plurality of tracks. A request is received to write one or more tracks. The one or more tracks are written to a selected stride of the plurality of strides, based on comparing the number of operations required to destage selected tracks from the selected stride to the number of operations required to defragment the compressed data in the selected stride.

主权项

1. A method, comprising:
receiving a request to write one or more tracks; and writing the one or more tracks to a stride by creating contiguous free space on the stride either via destaging of selected tracks or via defragmentation of the stride, in response to determining whether the destaging or the defragmentation is faster.