US 11,893,275 B2
DRAM-less SSD with recovery from HMB loss
Amir Segev, Meiter (IL); and Shay Benisty, Beer Sheva (IL)
Assigned to Western Digital Technologies, Inc., San Jose, CA (US)
Filed by Western Digital Technologies, Inc., San Jose, CA (US)
Filed on Apr. 20, 2022, as Appl. No. 17/725,359.
Application 17/725,359 is a continuation in part of application No. 17/479,795, filed on Sep. 20, 2021, granted, now 11,809,742.
Prior Publication US 2023/0093359 A1, Mar. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0656 (2013.01) [G06F 3/0604 (2013.01); G06F 3/0659 (2013.01); G06F 3/0679 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A data storage device, comprising:
a memory device; and
a controller coupled to the memory device, wherein the data storage device is DRAM-less, and wherein the controller is configured to:
determine that a connection to a host memory buffer (HMB) of a host device is lost, wherein the connection between the host device and the data storage device is rebooted in response to a re-try limit of a command being reached, wherein re-trying the command comprises resending the command to the data storage device from the host device in response to a re-try suggestion sent by the controller to the host device;
load a most recent copy of a flash translation layer (FTL) table from the memory device;
generate one or more updates to the most recent copy of the FTL table; and
re-enable command fetching.