Hewlett Packard Enterprise Development LP

Thomas David Evans

Siamak Nazari

Faris Hindi

Daniel Aaron Harbaugh

Anahita Afkham

Example implementations relate to a failure policy. For example, in an implementation, storage device status data is encoded into storage device states. An action is chosen based on the storage device state according to a failure policy, where the failure policy prescribes, based on a probabilistic model, whether for a particular storage device state a corresponding action is to take no action or to initiate a failure mitigation procedure on a storage device. The failure policy is rewarded according to a timeliness of choosing to initiate the failure mitigation procedure relative to a failure of the storage device.

Storage device failure policies

In some examples, sectors of a solid-state drive are unmapped to initialize the sectors. The sectors include a data portion and a protection portion. When an unmapped sector is read, the solid-state drive can return a pre-set value for the unmapped sector, where the pre-set value includes a known fixed value to represent the protection portion of the unmapped sector. The storage controller is to recognize the known fixed value returned by the solid-state drive responsive to the read as representing the unmapped sector as being initialized, but not written to.

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Bellevue, WA, United States of America

Thomas David Evans