Storage system and method for data placement in zoned storage
A storage system uses blocks of memory that are sized larger than a size of a zone. This means that the storage system stores multiple zones in a given block. Storing zones with different zone properties in a given block can be problematic, so the storage system obtains zone property information for each zone and stores zones with similar zone properties in a given block.
1. A storage system comprising:
a memory comprising a plurality of blocks; and
a controller coupled with the memory and configured to:
obtain a zone property of each of a plurality of zones;
determine which of the plurality of blocks to store each of the plurality of zones based on the zone property of each zone; and
perform a folding operation into one of the plurality of blocks.
2. The storage system of claim 1 , wherein at least one of the blocks comprises a jumbo block that spans multiple dies or planes in the memory.
3. The storage system of claim 1 , wherein the zone property comprises temperature.
4. The storage system of claim 1 , wherein the zone property comprises an expected read pattern.
5. The storage system of claim 1 , wherein the zone property comprises an expected lifetime of data.
6. The storage system of claim 1 , wherein the zone properties are obtained from a host.
7. The storage system of claim 6 , wherein the zone properties are obtained from a write command received from the host.
8. The storage system of claim 7 , wherein the zone properties are obtained from a GroupID field in the write command.
9. The storage system of claim 6 , wherein the zone properties are obtained from an open zone command received from the host.
10. The storage system of claim 1 , wherein the zone properties are obtained by the controller from a history of previous commands received from a host.
11. The storage system of claim 1 , wherein the zone properties are obtained by the controller from a pre-configuration characteristic associated with a command received from a host.
12. The storage system of claim 1 , wherein the memory comprises a three-dimensional memory.
13. In a storage system comprising a memory comprising a plurality of blocks, a method comprising:
obtaining zone characteristics of a plurality of zones;
determining which of the plurality of blocks to store each of the plurality of zones based on the zone characteristics; and
storing multiple zones having similar zone characteristics in a single block;
wherein the zone characteristics are obtained from an open zone command received from a host.
14. The method of claim 13 , wherein at least one of the blocks comprises a jumbo block that spans multiple dies.
15. The method of claim 13 , wherein the zone characteristics comprise temperature.
16. The method of claim 13 , wherein the zone characteristics are obtained from a write command received from a host.
17. The method of claim 13 , wherein at least one of the blocks comprises a jumbo block that spans multiple planes in the memory.
18. The method of claim 13 , wherein the zone characteristics comprise an expected read pattern.
19. The method of claim 13 , wherein the zone characteristics comprise an expected lifetime of data.
20. A storage system comprising:
a memory comprising a plurality of blocks;
means for obtaining zone characteristics of a plurality of zones;
means for determining which of the plurality of blocks to store each of the plurality of zones based on the zone characteristics; and
means for storing multiple zones haying similar zone characteristics in a single block;
wherein the zone characteristics are obtained from a previous command history or a pre-configuration characteristic associated with a command.