Intelligent SAS phy connection management
View Patent ↗A method and apparatus that provides a solid state drive that analyzes connection performance during I/O operations and is configured to independently modify connection performance based upon user specified input parameters without the need for host computer management.
1. A solid state drive for phy connection management, comprising:
at least one phy connection configured to be connected to an electrical circuit and transmit and receive data from the at least one phy connection;
a SAS phy connection manager connected to each of the at least one phy connections, wherein the SAS phy connection manager is configured to control a connection of the at least one phy connection to the electrical circuit, and wherein the SAS phy connection manager is configured to internally, without a host device management, capture data related to initiator requests, capture connection performance statistics, analyze the connection performance statistics, and adjust connection configuration controls for future connections;
a direct memory access multiplexer connected to the at least one phy connection to transmit and receive data; and
a direct memory access engine queue connected to the direct memory access multiplexer.
2. The solid state drive according to claim 1 , wherein the at least one phy connection is four phy connections.
3. The solid state drive according to claim 1 , further comprising:
a SAS phy DMA scheduler connected to the DMA engine queue and the SAS phy connection manager, wherein the SAS DMA scheduler is configured to schedule operations of a SAS phy.
4. The solid state drive according to claim 1 , further comprising:
a SAS phy power governor connected to the SAS phy connection manager.
5. The solid state drive according to claim 4 , further comprising:
a command statistics performance monitor connected to the SAS phy power governor, the SAS phy connection manager, and a SAS phy direct memory access scheduler.
6. The solid state drive according to claim 4 , wherein the SAS phy power governor is further configured to be connected to each of the at least one phy connections.
7. The solid state drive according to claim 5 , further comprising:
at least one media subsystem.
8. The solid state drive according to claim 7 , wherein the at least one media subsystem is a memory buffer.
9. The solid state drive according to claim 7 , wherein the at least one media subsystem is a data state machine.
10. The solid state drive according to claim 1 , wherein the SAS phy connection manager is configured to internally, without the host device management, predict a host phy usage.
11. The solid state drive according to claim 1 , wherein the SAS phy connection manager is configured to internally, without the host device management, predict a device phy usage.
12. The solid state drive according to claim 1 , wherein the SAS phy connection manager is configured to internally, without the host device management, set a time when a next phy will be used by a host.
13. The solid state drive according to claim 1 , wherein the solid state drive is configured to internally, without the host device management, make connection decisions to the at least one phy based upon the initiator requests.
14. The solid state drive according to claim 1 , wherein the solid state drive is configured to internally, without the host device management, make connection decisions to the at least one phy based upon a prediction of an initiator response time.
15. The solid state drive according to claim 1 , further comprising:
a wide port performance power control connected to the SAS phy connection manager, wherein the wide port performance power control is configured to internally, without the host device management, make connection decisions to the at least one phy based upon at least one of performance and power data of the arrangement.
16. The solid state drive according to claim 1 , wherein the solid state drive is configured to internally, without the host device management, adjust connections based on at least one of performance and power preferences of a user.