SSD with multiple bandwidth tiers based on physical characteristics
An embodiment of an electronic apparatus may include a substrate and a controller coupled to the substrate, the controller including circuitry to control access to a NAND-based storage media that includes a plurality of NAND devices located on the substrate and organized into two or more physical clusters with each NAND device uniquely assigned to one of the two or more physical clusters, perform data access to a first physical cluster of the two or more physical clusters at a first bandwidth, and perform data access to a second physical cluster of the two or more physical clusters at a second bandwidth that is slower than the first bandwidth. Other embodiments are disclosed and claimed.
1. An electronic apparatus, comprising:
a substrate; and
a controller coupled to the substrate, the controller including circuitry to:
control access to a NAND-based storage media that includes a plurality of NAND devices located on the substrate and organized into two or more physical clusters with each NAND device uniquely assigned to one of the two or more physical clusters, wherein the two or more physical clusters are arranged around the controller with a fastest physical cluster of the two or more physical clusters being closest to the controller, NAND devices of the fastest physical cluster comprising NAND devices with a lowest number of levels of the plurality of NAND devices;
perform data access to a first physical cluster of the two or more physical clusters at a first bandwidth;
perform data access to a second physical cluster of the two or more physical clusters at a second bandwidth that is slower than the first bandwidth;
present the two or more physical clusters to a host operating system each as a different respective virtual drive; and
direct an access request to a particular one of the two or more physical clusters based on a drive target of an input/output transaction.
2. The apparatus of claim 1 , wherein the circuitry is further to:
perform data access to a third physical cluster at a third bandwidth that is slower than the second bandwidth.
3. The apparatus of claim 1 , wherein the circuitry is further to:
control access to a first type of NAND media in the first physical cluster; and
control access to a second type of NAND media in the second physical cluster.
4. The apparatus of claim 1 , wherein the circuitry is further to:
arbitrate multiple access requests to the two or more physical clusters to preserve a higher performance of physical clusters with faster bandwidth.
5. The apparatus of claim 1 , wherein the controller and the NAND-based storage media are incorporated in a solid-state drive.
6. An electronic storage system, comprising:
NAND-based storage media that includes a plurality of NAND devices located on a same substrate and organized into two or more physical clusters with each NAND device uniquely assigned to one of the two or more physical clusters; and
a controller communicatively coupled to the NAND-based storage media, wherein the two or more physical clusters are arranged around the controller with a fastest physical cluster of the two or more physical clusters being closest to the controller, NAND devices of the fastest physical cluster comprising NAND devices with a lowest number of levels of the plurality of NAND devices, the controller including circuitry to:
perform data access to a first physical cluster of the two or more physical clusters at a first bandwidth;
perform data access to a second physical cluster of the two or more physical clusters at a second bandwidth that is slower than the first bandwidth;
present the two or more physical clusters to a host operating system each as a different respective virtual drive; and
direct an access request to a particular one of the two or more physical clusters based on a drive target of an input/output transaction.
7. The system of claim 6 , wherein the circuitry is further to:
perform data access to a third physical cluster at a third bandwidth that is slower than the second bandwidth.
8. The system of claim 6 , wherein the circuitry is further to:
control access to a first type of NAND media in the first physical cluster; and control access to a second type of NAND media in the second physical cluster.
9. The system of claim 6 , wherein the circuitry is further to:
arbitrate multiple access requests to the two or more physical clusters to preserve a higher performance of physical clusters with faster bandwidth.
10. The system of claim 6 , wherein the controller and the NAND-based storage media are incorporated in a solid-state drive.
11. A method of controlling storage, comprising:
controlling, using a controller, access to a NAND-based storage media that includes a plurality of NAND devices located on the substrate and organized into two or more physical clusters with each NAND device uniquely assigned to one of the two or more physical clusters, wherein the two or more physical clusters are arranged around the controller with a fastest physical cluster of the two or more physical clusters being closest to the controller, NAND devices of the fastest physical cluster comprising NAND devices with a lowest number of levels of the plurality of NAND devices;
performing data access to a first physical cluster of the two or more physical clusters at a first bandwidth;
performing data access to a second physical cluster of the two or more physical clusters at a second bandwidth that is slower than the first bandwidth;
presenting the two or more physical clusters to a host operating system each as a different respective virtual drive; and
directing an access request to a particular one of the two or more physical clusters based on a drive target of an input/output transaction.
12. The method of claim 11 , further comprising:
performing data access to a third physical cluster at a third bandwidth that is slower than the second bandwidth.
13. The method of claim 11 , further comprising:
controlling access to a first type of NAND media in the first physical cluster; and
controlling access to a second type of NAND media in the second physical cluster.
14. The method of claim 11 , further comprising:
arbitrating multiple access requests to the two or more physical clusters to preserve a higher performance of physical clusters with faster bandwidth.