US 12,411,622 B2
Dynamic zone group creation and recalibration balancing
Karin Inbar, Ramat Hasharon (IL); Liam Parker, Edinburgh (GB); and Stephen Gold, Fort Collins, CO (US)
Assigned to Sandisk Technologies, Inc., Milpitas, CA (US)
Filed by Sandisk Technologies, Inc., Milpitas, CA (US)
Filed on Jul. 18, 2023, as Appl. No. 18/354,458.
Claims priority of provisional application 63/478,283, filed on Jan. 3, 2023.
Prior Publication US 2024/0220138 A1, Jul. 4, 2024
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0631 (2013.01) [G06F 3/0616 (2013.01); G06F 3/0644 (2013.01); G06F 3/0673 (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 controller is configured to:
detect zone group fragmentations;
run a zone group creation algorithm when a host device instructs the data storage device to create one or more new zone groups;
allocate a different number of zones within a new zone group of the one or more new zone groups compared to an already existing zone group;
determine one or more zones to use for each of the one or more new zone groups based on a zone lifetime hint from the host device, wherein the zone lifetime hint is an indicator whether a zone is a short lived zone or a long lived zone, wherein at least one zone of the one or more zones is used in the already existing zone group; and
create the one or more new zone groups based on the determining.