US 12,405,752 B2
Migrating data between byte-addressable and block-addressable storage devices in processor-based devices
Andrew Mills, Coto de Caza, CA (US)
Assigned to SMART Modular Technologies, Inc., Newark, CA (US)
Filed by SMART Modular Technologies, Inc., Newark, CA (US)
Filed on Sep. 26, 2023, as Appl. No. 18/373,234.
Prior Publication US 2025/0103247 A1, Mar. 27, 2025
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0664 (2013.01) [G06F 3/0619 (2013.01); G06F 3/0653 (2013.01); G06F 3/0659 (2013.01); G06F 3/0673 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A processor-based device, comprising a virtualization circuit communicatively coupled to a byte-addressable storage device and a block-addressable storage device;
the virtualization circuit configured to:
present, to a processor of the processor-based device, the byte-addressable storage device and the block-addressable storage device as a single virtual storage device;
generate a usage statistic for each of the byte-addressable storage device and the block-addressable storage device;
identify a low-activity region in the byte-addressable storage device based on the usage statistic for the byte-addressable storage device;
identify a high-activity region in the block-addressable storage device based on the usage statistic for the block-addressable storage device; and
exchange a first storage region corresponding to the low-activity region and comprising a memory address region of the byte-addressable storage device with a second storage region corresponding to the high-activity region and comprising a block region of the block-addressable storage device;
wherein:
the single virtual storage device is configurably presented as one of a byte-addressable virtual storage device and a block-addressable virtual storage device;
the high-activity region comprises a block-addressable storage region for which the corresponding usage statistic exceeds a value of a promotion threshold; and
the low-activity region comprises a byte-addressable storage region for which the corresponding usage statistic is lower than the usage statistic for the high-activity region.