US 12,223,175 B1
Cache writing to zones to maximize write bandwidth
Liam Parker, Edinburgh (GB); and Alan D. Bennett, Edinburgh (GB)
Assigned to Sandisk Technologies, Inc., Milpitas, CA (US)
Filed by Western Digital Technologies, Inc., San Jose, CA (US)
Filed on Sep. 11, 2023, as Appl. No. 18/464,503.
Int. Cl. G06F 3/06 (2006.01); G06F 12/0875 (2016.01)
CPC G06F 3/0613 (2013.01) [G06F 3/0644 (2013.01); G06F 3/0658 (2013.01); G06F 3/0688 (2013.01); G06F 12/0875 (2013.01); G06F 2212/1016 (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:
open a zone in a zoned namespace (ZNS) drive, wherein the zone has an estimated write rate equal to the write rate of a most recently closed zone;
calculate a total write rate for each jumbo device of a plurality of jumbo devices, wherein each jumbo device includes a plurality of zones; and
place the opened zone in a jumbo device having a lowest total write rate.