Patent ID: 11934664
Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 17:
18. A storage device, comprising:
a memory;
a storage device controller coupled to the memory;
a storage device power management circuit coupled to the memory and the storage device controller; and
a rechargeable battery coupled to the storage device power management circuit;
wherein the storage device controller is configured to receive power supplied by a host device or a redundant array of independent disks (RAID) controller, to receive a notification of a loss in the power supplied by the host device or the RAID controller to another storage device, and to cause the storage device power management circuit to detect a charge of the rechargeable battery in response to the notification; and
wherein the storage device power management circuit is configured to detect another loss in power supplied by the host device or the RAID controller, to cause the storage device controller to send a message to the host device or the RAID controller indicating the another loss in power and indicating a current status of the storage device, and to receive rationed power from the host device or the RAID controller in response to the message, wherein an amount of the rationed power is based on the current status of the storage device, a program data rate of the storage device, and a size of data from the host device or the RAID controller to be written to the memory.