Abstract: Data management functions are offloaded from a main controller to individual storage devices in a multi-device storage environment. The main controller receives a data management request from a host system, and responds by determining one or more storage devices and one or more data management operations to be performed by the one or more storage devices. The main controller initiates performance of a data management function corresponding to the data management request, by sending one or more data management commands to the one or more storage devices, and initiating one or more data transfers, such as a direct memory access operation to transfer data between a memory buffer of a storage device and a host memory buffer of the host system, and an internal data transfer between two or more of the storage devices using an internal communication fabric of the data storage subsystem.

Abstract: A system and method improve the performance of non-volatile memory storage by facilitating direct memory access (DMA) transfers between a remote host and a non-volatile memory based storage system, such as a flash memory based data storage device (e.g., a solid state drive (SSD)). In conjunction with reading from and writing to non-volatile memory storage, a memory buffer on the non-volatile memory system is allocated, and a read or write command is translated to point to the allocated buffer. Thereafter, read and write operations may be performed through a controller, such as a non volatile memory express (NVMe) controller, using remote direct memory access (RDMA) transfers, thus bypassing time consuming processor steps of buffering data to main memory and allowing bi-directional throughput to reach network and SSD speeds.

Abstract: A system and method pertains to operating non-volatile memory systems. Technology disclosed herein efficiently uses memory available in non-volatile storage devices in a non-volatile memory system. In some aspects, non-volatile storage devices enforce a redundancy coding stripe across the non-volatile storage devices formed from chunks of data having internal addresses assigned in a coordinated scheme across the storage devices. In some aspects, non-volatile storage devices enforce a redundancy coding stripe across the non-volatile storage devices at the same internal addresses in the respective non-volatile storage devices.

Abstract: A system and method pertains to operating non-volatile memory systems. Technology disclosed herein efficiently uses memory available in non-volatile storage devices in a non-volatile memory system. In some aspects, non-volatile storage devices enforce a redundancy coding stripe across the non-volatile storage devices formed from chunks of data having internal addresses assigned in a coordinated scheme across the storage devices. In some aspects, non-volatile storage devices enforce a redundancy coding stripe across the non-volatile storage devices at the same internal addresses in the respective non-volatile storage devices.

Abstract: Data management functions are offloaded from a main controller to individual storage devices in a multi-device storage environment. The main controller receives a data management request from a host system, and responds by determining one or more storage devices and one or more data management operations to be performed by the one or more storage devices. The main controller initiates performance of a data management function corresponding to the data management request, by sending one or more data management commands to the one or more storage devices, and initiating one or more data transfers, such as a direct memory access operation to transfer data between a memory buffer of a storage device and a host memory buffer of the host system, and an internal data transfer between two or more of the storage devices using an internal communication fabric of the data storage sub system.

Abstract: A system and method improve the performance of non-volatile memory storage by facilitating direct memory access (DMA) transfers between a remote host and a non-volatile memory based storage system, such as a flash memory based data storage device (e.g., a solid state drive (SSD)). In conjunction with reading from and writing to non-volatile memory storage, a memory buffer on the non-volatile memory system is allocated, and a read or write command is translated to point to the allocated buffer. Thereafter, read and write operations may be performed through a controller, such as a non volatile memory express (NVMe) controller, using remote direct memory access (RDMA) transfers, thus bypassing time consuming processor steps of buffering data to main memory and allowing bi-directional throughput to reach network and SSD speeds.

Abstract: Systems, methods and/or devices are used to reduce declared capacity of non-volatile memory of a storage device in a storage system. In one aspect, the method includes, detecting an amelioration trigger for reducing declared capacity of non-volatile memory of a storage device of the storage system, and in accordance with the detected amelioration trigger, performing an amelioration process to reduce declared capacity of the non-volatile memory of the storage device, the performing including making specific logical addresses of a logical address space unavailable to a host. In some embodiments, the storage device includes one or more flash memory devices. In some embodiments, the detecting, the performing, or both are performed by the storage device, or by one or more subsystems of the storage system distinct from the storage device, or by the host.

Abstract: Systems, methods and/or devices are used to reduce declared capacity of non-volatile memory of a storage device in a storage system. In one aspect, the method includes, detecting an amelioration trigger for reducing declared capacity of non-volatile memory of a storage device of the storage system, and in accordance with the detected amelioration trigger, performing an amelioration process to reduce declared capacity of the non-volatile memory of the storage device, the performing including reducing a count of logical addresses of a logical address space available to a host. In some embodiments, the storage device includes one or more flash memory devices. In some embodiments, the detecting, the performing, or both are performed by the storage device, or by one or more subsystems of the storage system distinct from the storage device, or by the host.

Abstract: Systems, methods and/or devices are used to reduce declared capacity of non-volatile memory of a storage device in a storage system. In one aspect, the method includes, detecting an amelioration trigger for reducing declared capacity of non-volatile memory of a storage device of the storage system, and in accordance with the detected amelioration trigger, performing an amelioration process to reduce declared capacity of the non-volatile memory of the storage device, the performing including reducing a range of logical addresses of a logical address space available to a host. In some embodiments, the storage device includes one or more flash memory devices. In some embodiments, the detecting, the performing, or both are performed by the storage device, or by one or more subsystems of the storage system distinct from the storage device, or by the host.

Abstract: Systems, methods and/or devices are used to enable triggering a process to reduce declared capacity of a storage device in a multi-storage-device storage system. In one aspect, the method includes: (1) obtaining, for each storage device of a plurality of storage devices of the storage system, one or more metrics of the storage device, the storage device including non-volatile memory, (2) detecting a trigger condition for reducing declared capacity of the non-volatile memory of a respective storage device of the plurality of storage devices, the trigger condition detected in accordance with the one or more metrics of one or more storage devices, and (3) enabling an amelioration process associated with the detected trigger condition, the amelioration process to reduce declared capacity of the non-volatile memory of the respective storage device. In some embodiments, the respective storage device includes one or more flash memory devices.

Abstract: Systems, methods and/or devices are used to reduce declared capacity of non-volatile memory of a storage device in a storage system. In one aspect, the method includes, detecting an amelioration trigger for reducing declared capacity of non-volatile memory of a storage device, and in accordance with the detected amelioration trigger, performing an amelioration process to reduce declared capacity of the non-volatile memory of the storage device, the performing including: moving a portion of data used by a host from the storage device to another storage device of the storage system, and reducing declared capacity of the non-volatile memory of the storage device. In some embodiments, the storage device includes one or more flash memory devices. In some embodiments, the detecting, the performing, or both are performed by the storage device, or by one or more subsystems of the storage system distinct from the storage device, or by the host.

Abstract: Systems, methods and/or devices are used to enable notification of a trigger condition to reduce declared capacity of a storage device. In one aspect, the method includes, at a storage device of a storage system, the storage device including non-volatile memory: (1) detecting a trigger condition for reducing declared capacity of the non-volatile memory of the storage device, and (2) notifying a host to which the storage device is operatively coupled of the trigger condition for reducing declared capacity of the non-volatile memory of the storage device, the trigger condition for enabling performance of an amelioration process to reduce declared capacity of the non-volatile memory of the storage device. In some embodiments, the storage device includes one or more flash memory devices.

Abstract: Systems, methods and/or devices are used to enable notification of a trigger condition to reduce declared capacity of a storage device in a multi-storage-device storage system. In one aspect, the method includes: (1) obtaining, for each storage device of a plurality of storage devices, one or more metrics of the storage device, the storage device including non-volatile memory, (2) detecting a trigger condition for reducing declared capacity of the non-volatile memory of a respective storage device of the plurality of storage devices, the trigger condition detected in accordance with the one or more metrics of two or more of the storage devices, and (3) notifying a host of the trigger condition for reducing declared capacity of the non-volatile memory of the respective storage device, the trigger condition for enabling performance of an amelioration process to reduce declared capacity of the non-volatile memory of the respective storage device.

Abstract: Systems, methods, and/or devices are used to reduce declared capacity of non-volatile memory of a storage device in a storage system. In one aspect, the method includes, detecting an amelioration trigger for reducing declared capacity of non-volatile memory of the storage device of the storage system, and in accordance with the detected amelioration trigger, performing an amelioration process to reduce declared capacity of the non-volatile memory of the storage device, the performing including: trimming at least a portion of a set of logical addresses in a logical address space; and reducing declared capacity of the non-volatile memory of the storage device. In some embodiments, the storage device includes one or more flash memory devices. In some embodiments, the method is performed by a host to which a storage device of the storage system is operatively coupled.

Abstract: Systems, methods and/or devices are used to enable triggering a process to reduce declared capacity of a storage device. In one aspect, the method includes, at a storage device of a storage system: (1) generating one or more metrics of the storage device, the storage device including non-volatile memory, (2) detecting a trigger condition in accordance with the one or more metrics of the storage device, and (3) enabling an amelioration process associated with the detected trigger condition, the amelioration process to reduce declared capacity of the non-volatile memory of the storage device. In some embodiments, the storage device includes one or more flash memory devices.

Abstract: Systems, methods and/or devices are used to reduce declared capacity of non-volatile memory of a storage device in a storage system. In one aspect, the method includes, detecting an amelioration trigger for reducing declared capacity of non-volatile memory of a storage device of the storage system, and in accordance with the detected amelioration trigger, performing an amelioration process to reduce declared capacity of the non-volatile memory of the storage device, the performing including: deleting from the storage device discardable data that is used by a host, and reducing declared capacity of the non-volatile memory of the storage device. In some embodiments, the storage device includes one or more flash memory devices. In some embodiments, the detecting, the performing, or both are performed by the storage device, or by one or more subsystems of the storage system distinct from the storage device, or by the host.

Abstract: Systems, methods, and/or devices are used to reduce declared capacity of non-volatile memory of a storage device in a storage system. In one aspect, the method includes, detecting an amelioration trigger for reducing declared capacity of non-volatile memory of the storage device of the storage system, and in accordance with the detected amelioration trigger, performing an amelioration process to reduce declared capacity of the non-volatile memory of the storage device, the performing including: trimming, in accordance with a trim command received from a host, at least a portion of a set of logical addresses in a logical address space; and reducing declared capacity of the non-volatile memory of the storage device. In some embodiments, the storage device includes one or more flash memory devices. In some embodiments, the method is performed by the storage device.

Abstract: Systems, methods and/or devices are used to reduce declared capacity of non-volatile memory of a storage device in a storage system. In one aspect, the method includes, detecting an amelioration trigger for reducing declared capacity of non-volatile memory of a storage device of the storage system, and in accordance with the detected amelioration trigger, performing an amelioration process to reduce declared capacity of the non-volatile memory of the storage device, the performing including: altering an encoding format of at least a portion of the non-volatile memory of the storage device, and reducing declared capacity of the non-volatile memory of the storage device. In some embodiments, the storage device includes one or more flash memory devices. In some embodiments, the detecting, the performing, or both are performed by the storage device, or by one or more subsystems of the storage system distinct from the storage device, or by the host.

Abstract: The embodiments described herein include systems, methods and/or devices that may enhance the endurance of a storage system including a storage medium. The method includes: dividing a plurality of flash memory devices into logical chunks each logical chunk including one or more flash memory blocks; and detecting a trigger condition with respect to a respective flash memory device of the plurality of flash memory devices. In response to detecting the trigger condition, the method includes: selecting one of the logical chunks of the respective flash memory device for migration in accordance with predefined selection criteria; and storing a replicated logical chunk, comprising a copy of the selected logical chunk, at a second flash memory device. The method includes: remapping an address of the selected logical chunk to a physical location of the replicated logical chunk; and decreasing a number of logical chunks associated with the respective flash memory device.

Abstract: Systems, methods and/or devices are used to enable triggering, at a host system, a process to reduce declared capacity of a storage device. In one aspect, the method includes, at a host to which a storage device of the storage system is operatively coupled: (1) obtaining one or more metrics of the storage device, the storage device including non-volatile memory, (2) detecting a trigger condition in accordance with the one or more metrics of the storage device, and (3) enabling an amelioration process associated with the detected trigger condition, the amelioration process to reduce declared capacity of the non-volatile memory of the storage device. In some embodiments, the storage device includes one or more flash memory devices.