Abstract: A RAID storage-device-assisted parity data update system includes a first RAID primary data drive that DMA's second primary data from a host system, and XOR's it with first primary data to produce first interim parity data for a first data stripe. A second RAID primary data drive DMA's fourth primary data from the host system, and XOR's it with third primary data to produce second interim parity data for a second data stripe. A first RAID parity data drive DMAs the first interim parity data and XOR's it with first parity data to produce second parity data for the first data stripe that overwrites the first parity data. A second RAID parity data drive DMA's the second interim parity data and XOR's it with third parity data to produce fourth parity data for the second data stripe that overwrites the third parity data.

Abstract: A RAID storage-device-assisted unavailable primary data/Q data rebuild system includes a RAID primary data drive that receives a RAID storage controller device command and DMA's first primary data to a RAID parity data drive. The RAID parity data drive receives a RAID storage controller device command and XORs its first parity data, the first primary data, and its second primary data to produce third primary data that it writes to its storage subsystem. The RAID parity data storage device then receives a RAID storage controller device command and performs GF and XOR operations on the first primary data, the second primary data, and the third primary data to produce second Q data, and DMA's the first Q data to a RAID Q data drive. The RAID Q data storage device receives a RAID storage controller device command and writes the first Q data to its storage subsystem.

Abstract: 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.

Abstract: A data-transfer-based RAID data update system includes a RAID storage controller device coupled to a host system and RAID storage devices. The RAID storage controller device receives a command that is associated with a data update on at least one of the RAID storage devices from the host system. The RAID storage controller device then determines, from a plurality of RAID data update techniques that are available to execute the command and perform the data update on the at least one of the RAID storage devices, a first RAID data update technique that is included in the plurality of RAID data update techniques and that requires the lowest number of data transfers to execute the command and perform the data update. The RAID storage controller device then causes the command to be performed using the first RAID data update technique to provide the data update.

Abstract: A RAID storage-device-assisted deferred Q data determination system includes a RAID primary data drive that retrieves second primary data via DMA with a host system, and XOR's it with its first primary data to produce first interim parity data that it DMA's to a RAID parity data drive. The RAID parity data drive XOR's its first parity data and the first interim parity data to produce second parity data. The RAID parity data drive also performs GF operations on the first interim parity data and its second interim parity data and XOR's the results to produce first interim Q data that it DMA's to a RAID Q data drive. The RAID Q data drive XOR's the first interim Q data and its second interim Q data to produce third interim Q data that it XOR's with its first Q data to produce second Q data.

Abstract: A drive assisted storage controller system includes a first storage device that is coupled to a bus that includes a data path and a control path. The first storage device receives via the control path from a storage controller, a first peer-to-peer write command that identifies a host memory address included in a memory system, a first storage location provided in the first storage device, and a second storage location provided in a second storage device coupled to the bus. The first storage device retrieves, via the data path from the host memory address, first write data such that the first write data is not provided through the storage controller. The first storage device provides, via the control path to the second storage device, a second peer-to-peer write command that includes the second storage location. The second peer-to-peer write command causes the second storage device to retrieve the first write data from the first storage device via the data path.

Abstract: A multi-port storage device multi-socket memory access system includes a plurality of processing subsystems interconnected by at least one processing subsystem interconnect, a respective local memory subsystem for each of the processing subsystems, and a storage system that provides a respective connection to each of the processing subsystems. The storage system receives a memory access command and uses it to determine a first local memory subsystem that includes a memory location that is identified in the memory access command. The storage system then uses a connection mapping to identify a first connection to a first processing subsystem for which the first local memory subsystem is provided. The storage system then accesses the first memory subsystem through the first connection, via the first processing system, and without utilizing the at least one processing subsystem interconnect, in order to execute the memory access command.

Abstract: A multi-port storage device multi-socket memory access system includes a plurality of processing subsystems interconnected by at least one processing subsystem interconnect, a respective local memory subsystem for each of the processing subsystems, and a storage system that provides a respective connection to each of the processing subsystems. The storage system receives a memory access command and uses it to determine a first local memory subsystem that includes a memory location that is identified in the memory access command. The storage system then uses a connection mapping to identify a first connection to a first processing subsystem for which the first local memory subsystem is provided. The storage system then accesses the first memory subsystem through the first connection, via the first processing system, and without utilizing the at least one processing subsystem interconnect, in order to execute the memory access command.

Abstract: A drive assisted storage controller system includes a first storage device that is coupled to a bus that includes a data path and a control path. The first storage device receives via the control path from a storage controller, a first peer-to-peer write command that identifies a host memory address included in a memory system, a first storage location provided in the first storage device, and a second storage location provided in a second storage device coupled to the bus. The first storage device retrieves, via the data path from the host memory address, first write data such that the first write data is not provided through the storage controller. The first storage device provides, via the control path to the second storage device, a second peer-to-peer write command that includes the second storage location. The second peer-to-peer write command causes the second storage device to retrieve the first write data from the first storage device via the data path.