Methods and structure for optimizing disk space utilization

摘要

Methods and associated structure to improve disk capacity utilization in the context of size coercion and COD space reservation techniques applied in a storage system. One aspect hereof provides that the size coercion computations to reduce (round down) the capacity of one or more disk drives in a storage system are performed prior to reservation of disk space for use in configuration-on-disk (COD) techniques. Performing coercion computations and configuration prior to COD space reservation prevents the COD reservation processing from causing un-necessary waste of physical capacity of the coerced disk drives.