Patent ID: 9665311
Date: 2017-05-30
CPC Classifications: G06F

Claim:
1. A method of managing a storage system, the method comprising: detecting an amelioration trigger for reducing declared capacity of non-volatile memory of a storage device of the storage system, wherein declared capacity is storage capacity available to a host and wherein a total storage capacity of the non-volatile memory of the storage device includes declared capacity and over-provisioning; in accordance with the detected amelioration trigger, performing an amelioration process to reduce declared capacity of the non-volatile memory of the storage device, the performing including making specific logical addresses of a logical address space unavailable to the host; prior to detecting the amelioration trigger, detecting a first wear condition of the non-volatile memory of the storage device; and in response to detecting the first wear condition, performing a remedial action that reduces over-provisioning of the non-volatile memory of the storage device without reducing declared capacity of the non-volatile memory of the storage device.