Patent ID: 9632702
Date: 2017-04-25
CPC Classifications: G06F

Claim:
1. A method in a data storage system having a plurality of non-volatile storage devices, the method comprising: the data storage system unmapping at least a portion of a storage extent; thereafter, in response to at least one input, a higher level controller of the data storage system issuing an initialization command specifying initialization of the storage extent; in response to the initialization command, at least one lower level controller issuing dataless initialization commands to the plurality of non-volatile storage devices; and in response to the dataless initialization commands, multiple first non-volatile storage devices among the plurality of non-volatile storage devices each initializing a respective data portion of the storage extent and a second non-volatile storage device among the plurality of non-volatile storage devices initializing a data protection portion of the storage extent, wherein initializing the data protection portion includes: