Look-aside RAID controller storage-device-assisted data update system
A RAID storage controller storage-device-assisted data update system includes a RAID storage controller device coupled to a host system and RAID storage devices in a “look aside” RAID storage controller device configuration. Based on command(s) from the RAID storage controller device, a first RAID primary data storage device may perform a first DMA operation to access first primary data stored on the host system, and write the first primary data to its first buffer subsystem. The first RAID primary data storage device may then perform a first XOR operation using the first primary data stored in its first buffer subsystem and second primary data stored in its first storage subsystem in order to produce first interim parity data, and write the first interim parity data to its second buffer subsystem. The first RAID primary data storage device may then update the second primary data with the first primary data.
1. A Redundant Array of Inexpensive Disks (RAID) storage controller storage-device-assisted data update system, comprising:
a host system;
a Redundant Array of Inexpensive Disks (RAID) storage controller device that is coupled to the host system; and
a plurality of RAID storage devices that are each coupled to the RAID storage controller device, and that are each coupled to the host system such that each of the plurality of RAID storage devices has direct access to the host system, wherein the plurality of RAID storage devices include:
a first RAID primary data storage device that is configured, based on at least one command received from the RAID storage controller device, to:
perform a first Direct Memory Access (DMA) operation that accesses first primary data that is stored on the host system;
write the first primary data to a first buffer subsystem in the first RAID primary data storage device;
perform a first XOR operation using the first primary data that is stored in the first buffer subsystem in the first RAID primary data storage device and second primary data that is stored in a first storage subsystem in the first RAID primary data storage device in order to produce first interim parity data; and
write the first interim parity data to a second buffer subsystem in the first RAID primary data storage device.
2. The system of claim 1 , wherein the first RAID primary data storage device is configured, based on at least one command received from the RAID storage controller device, to:
update the second primary data with the first primary data.
3. The system of claim 2 , wherein the first RAID primary data storage device is configured to:
transmit, in response to updating the second primary data with the first primary data, a completion communication to the RAID storage controller device.
4. The system of claim 1 , wherein the first RAID primary data storage device is configured to:
provide, via a second DMA operation performed by a RAID parity data storage device that is included in the plurality of RAID data storage devices, access to the interim parity data to the RAID parity data storage device.
5. The system of claim 1 , wherein the first RAID primary data storage device is provided by a Non-Volatile Memory express (NVMe) storage device.
6. The system of claim 1 , wherein the plurality of RAID storage devices include:
a RAID parity data storage device that is configured, based on at least one command received from the RAID storage controller device, to:
perform a respective DMA operations that access the first interim parity data in the second buffer subsystem in the first RAID primary data storage device and second interim parity data in at least one second RAID primary storage device included in the plurality of RAID storage devices;
write the first interim parity data and second interim parity data to a third buffer subsystem in the RAID parity data storage device;
perform a second XOR operation using the first interim parity data and the second interim parity data that is stored in the third buffer subsystem in the RAID parity data storage device and first parity data that is stored in a second storage subsystem in the RAID parity data storage device in order to produce second parity data; and
update the first parity data with the second parity data.
7. The system of claim 6 , wherein the RAID parity data storage device is configured to:
transmit, in response to updating the first parity data with the second parity data, a completion communication to the RAID storage controller device.
8. An Information Handling System (IHS), comprising:
a chassis;
a processing system that is housed in the chassis; and
a memory system that is housed in the chassis, coupled to the processing system, and that includes instructions that, when executed by the processing system, cause the processing system to provide a Redundant Array Of Inexpensive Disks (RAID) storage engine that is configured, based on at least one command received from a RAID storage controller device, to:
perform a first Direct Memory Access (DMA) operation that accesses first primary data that is stored on a host system;
write the first primary data to a first buffer subsystem that is housed in the chassis;
perform a first XOR operation using the first primary data that is stored in the first buffer subsystem and second primary data that is stored in a first storage subsystem that is housed in the chassis in order to produce first interim parity data; and
write the first interim parity data to a second buffer subsystem that is housed in the chassis.
9. The IHS of claim 8 , wherein the RAID storage engine is configured, based on at least one command received from the RAID storage controller device, to:
update the second primary data with the first primary data.
10. The IHS of claim 8 , wherein the RAID storage engine is configured to:
transmit, in response to updating the second primary data with the first primary data, a completion communication to the RAID storage controller device.
11. The IHS of claim 8 , wherein the RAID storage engine is configured to:
provide, via a second DMA operation performed by a RAID parity data storage device, access to the interim parity data to the RAID parity data storage device.
12. The IHS of claim 8 , wherein the IHS is provided by an Non-Volatile Memory express (NVMe) storage device.
13. The IHS of claim 8 , wherein the chassis is coupled to the host system and to the RAID storage controller device that is provided in a look-aside RAID storage controller device configuration.
14. A method for providing data-transfer-based Redundant Array of Independent Disk (RAID) data updates, comprising:
performing, by a first RAID primary data storage device based on at least one command received from a RAID storage controller device, a first Direct Memory Access (DMA) operation that accesses first primary data that is stored on a host system;
writing, by the first RAID primary data storage device based on at least one command received from the RAID storage controller device, the first primary data to a first buffer subsystem that is included in the first RAID primary data storage device;
performing, by the first RAID primary data storage device based on at least one command received from the RAID storage controller device, a first XOR operation using the first primary data that is stored in the first buffer subsystem and second primary data that is stored in a first storage subsystem that is included in the first RAID primary data storage device in order to produce first interim parity data; and
writing, by the first RAID primary data storage device based on at least one command received from the RAID storage controller device, the first interim parity data to a second buffer subsystem that is included in the first RAID primary data storage device.
15. The method of claim 14 , further comprising:
updating, by the first RAID primary data storage device based on at least one command received from the RAID storage controller device, the second primary data with the first primary data.
16. The method of claim 15 , further comprising:
transmit, by the first RAID primary data storage device in response to updating the second primary data with the first primary data, a completion communication to the RAID storage controller device.
17. The method of claim 14 , further comprising:
providing, by the first RAID primary data storage device via a second DMA operation performed by a RAID parity data storage device, access to the interim parity data to the RAID parity data storage device.
18. The method of claim 14 , wherein the first RAID primary data storage device is provided by a Non-Volatile Memory express (NVMe) storage device.
19. The method of claim 14 , further comprising:
performing, by a RAID parity data storage device, respective DMA operations that access the first interim parity data in the second buffer subsystem in the first RAID primary data storage device and second interim parity data in at least one second RAID primary storage device;
writing, by the RAID parity data storage device, the first interim parity data and second interim parity data to a third buffer subsystem in the RAID parity data storage device;
performing, by the RAID parity data storage device, a second XOR operation using the first interim parity data and the second interim parity data that is stored in the third buffer subsystem in the RAID parity data storage device and first parity data that is stored in a second storage subsystem in the RAID parity data storage device in order to produce second parity data; and
updating, by the RAID parity data storage device, the first parity data with the second parity data.
20. The method of claim 19 , further comprising:
transmitting, by the RAID parity data storage device in response to updating the first parity data with the second parity data, a completion communication to the RAID storage controller device.