US 11,971,771 B2
Peer storage device messaging for power management
Eran Moshe, Kfar Saba (IL); and Danny Berler, Tel-Mond (IL)
Assigned to Western Digital Technologies, Inc., San Jose, CA (US)
Filed by Western Digital Technologies, Inc., San Jose, CA (US)
Filed on Jan. 25, 2022, as Appl. No. 17/583,402.
Prior Publication US 2023/0236652 A1, Jul. 27, 2023
Int. Cl. G06F 1/32 (2019.01); G06F 1/3234 (2019.01)
CPC G06F 1/3268 (2013.01) 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a first data storage device comprising:
a processor;
a memory;
a host interface configured to connect to a host system;
a control bus interface configured to connect to a control bus, wherein a plurality of peer data storage devices is configured to connect to the control bus;
a power manager configured to determine a power state of the first data storage device;
a peer messaging service configured to establish, through the control bus interface, peer communication with the plurality of peer data storage devices; and
a peer power management service configured to:
receive, through the peer messaging service, a power change indicator; and
initiate, responsive to the power change indicator, a change in the power state of the first data storage device.