Triggering, at a host system, a process to reduce declared capacity of a storage device

摘要

Systems, methods and/or devices are used to enable triggering, at a host system, a process to reduce declared capacity of a storage device. In one aspect, the method includes, at a host to which a storage device of the storage system is operatively coupled: (1) obtaining one or more metrics of the storage device, the storage device including non-volatile memory, (2) detecting a trigger condition in accordance with the one or more metrics of the storage device, and (3) enabling an amelioration process associated with the detected trigger condition, the amelioration process to reduce declared capacity of the non-volatile memory of the storage device. In some embodiments, the storage device includes one or more flash memory devices.

主权项

1. A method of managing a storage system, the method comprising:
at a host to which a storage device of the storage system is operatively coupled:
obtaining one or more metrics of the storage device, the storage device including non-volatile memory;detecting a trigger condition in accordance with the one or more metrics of the storage device;enabling an amelioration process associated with the detected trigger condition, the amelioration process to reduce declared capacity of the non-volatile memory of the storage device, wherein declared capacity is storage capacity available to the host;prior to detecting the trigger condition, detecting a first wear condition of the non-volatile memory of the storage device, wherein a total storage capacity of the non-volatile memory of the storage device includes declared capacity and over-provisioning; andin 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.