Samsung Electronics Co., Ltd.

Netapp, Inc.

Sungwook Ryu

Yang Seok Ki

Changho Choi

Ramdas P Kachare

Oscar Prem Pinto

Rajinikanth Pandurangan

Ehsan M Najafabadi

Joseph P CaraDonna

Shweta Manohar Behere

Joshua Hanan Flank

Karnik Shah

Seontaek Kim

Sanghun Jun

Chanik Park

Rekha Pitchumani

Jingpei Yang

Vishwanath Maram

Matthew Shaun Bryson

Jing Yang

Sreenivasa Potakamuri

Alain Tran

Gayathiri Venkataraman

Steven Beam

Pradeep Thirunavukkarasu

Seema Kamat

Ben De Waal

Sunny Ratra

A method for computational storage may include storing, at a storage device, two or more portions of data, wherein a first one of the two or more portions of data comprises a first fragment of a record and a second one of the two or more portions of data comprises a second fragment of the record, and performing, by the storage device, an operation on the first and second fragments of the record. The method may further include performing, by the storage node, a second operation on first and second fragments of a second record. The operation may include a data selection operation, and the method may further include sending a result of the data selection operation to a server. The method may further include sending a result of a first data selection operation to a server.

Systems, methods, and apparatus for hierarchical aggregation for computational storage

A storage device may include a storage medium, a storage device controller coupled to the storage medium, a host interface coupled to the storage device controller, and an attachable module interface configured to connect an attachable compute module to the storage device controller. The attachable module interface may include a data interface, a side-band interface, and/or a power interface. The attachable module interface may include a connector configured to connect the attachable compute module to the storage device controller. The storage device may include an enclosure having an opening configured to enable the attachable compute module to be connected to the attachable module interface through the opening. The storage device controller may be configured to utilize one or more resources of the attachable compute module. The storage device controller may be configured to communicate with the attachable compute module through one or more command extensions of a storage protocol.

Systems, methods, and devices for attachable compute resources for storage devices

A method for data compression may include scanning input data, performing, based on the scanning, a compression operation to generate compressed data using the input data, finding, based on the scanning, a delimiter in the input data, and generating, based on a position of the delimiter in the input data, a portion of data using the compressed data. The input data may include a record, the delimiter indicates a boundary of the record, and the portion of data may include the record. The generating may include generating the portion of data based on a portion size. The portion size may be a default portion size. The portion size may be based on a default portion size and a length of a match in the input data.

Systems, methods, and apparatus for dividing and compressing data

In various embodiments, a method for page cache management is described. The method can include: identifying a storage device fault associated with a fault-resilient storage device; determining that a first region associated with the fault-resilient storage device comprises an inaccessible space and that a second region associated with the fault-resilient storage device comprises an accessible space; identifying a read command at the second storage device for the data and determine, based on the read command, first data requested by a read operation from a local memory of the second storage device; determining, based on the read command, second data requested by the read operation from the second region; retrieving the second data from the second region; and scheduling a transmission of the second data from the fault-resilient storage device to the second storage device.

System and device for data recovery for ephemeral storage

A method of operating a storage device may include determining a fault condition of the storage device, selecting a fault resilient mode based on the fault condition of the storage device, and operating the storage device in the selected fault resilient mode. The selected fault resilient mode may include one of a power cycle mode, a reformat mode, a reduced capacity read-only mode, a reduced capacity mode, a reduced performance mode, a read-only mode, a partial read-only mode, a temporary read-only mode, a temporary partial read-only mode, or a vulnerable mode. The storage device may be configured to perform a namespace capacity management command received from the host. The namespace capacity management command may include a resize subcommand and/or a zero-size namespace subcommand. The storage device may report the selected fault resilient mode to a host.

Systems, methods, and devices for fault resilient storage

A method may include operating a first storage device and a second storage device as a redundant array configured to use parity information to recover information from a faulty storage device, operating the first storage device in a fault resilient mode with at least partial read capability based on a fault condition of the first storage device, and rebuilding information from the first storage device in a parity space of the second storage device. Rebuilding the information from the first storage device in the parity space of the second storage device may include copying the information from the first storage device to the parity space of the second storage device. The method may further include copying the rebuilt information from the parity space of the second storage device to a replacement storage device.

Systems, methods, and devices for data recovery using parity space as recovery space

A method for communicating with a device may include running, at a device, an operating system, communicating, using a first function of an interconnect, with the device, and communicating, using a second function of the interconnect, with the operating system. The operating system may include communication logic, and the communicating with the operating may include communicating with the communication logic. The communication logic may one or more terminal support drivers, and the communicating with the communication logic may include communicating with the one or more terminal support drivers using a terminal application. The terminal application may run on a host. The second function of the interconnect may be configured to operate with a controller. The communicating with the operating system may include communicating with the operating system based on a privilege information. The host may be a management controller. The method may further include controlling, using the second function of the interconnect, a program on the operating system.

Systems, methods, and devices for accessing a device operating system over an interconnect

A method may include operating a first storage device and a second storage device as a redundant array, operating the first storage device in a fault resilient mode with at least partial read capability based on a fault condition of the first storage device, and rebuilding information from the first storage device on a spare storage device based on the fault condition of the first storage device. Rebuilding information from the first storage device on the spare storage device may include copying information from the first storage device to the spare storage device. The information from the first storage device may include data and/or parity information. The method may further include reading first information for a read or write operation from the first storage device based on a rebuild point of the spare storage device.

Systems, methods, and devices for data recovery with spare storage device and fault resilient storage device

A storage device, and a method for operating a storage device. In some embodiments, the storage device includes storage media, and the method includes: determining, by the storage device, that the storage device is in a first fault state from which recovery is possible by power cycling the storage device or by formatting the storage media; determining, by the storage device, that the storage device is in a second fault state from which partial recovery is possible by operating the storage device with reduced performance, with reduced capacity, or in a read-only mode; and operating the storage device with reduced performance, with reduced capacity, or in the read-only mode.

Fault resilient storage device

A method includes receiving, at a controller of a storage device, a command reserving a program slot of a processing device of the storage device to an application. The method further includes storing, by the controller of the storage device, an association between the program slot and the application. The method further includes receiving, at the controller of the storage device, a request to load the application into the execution slot. The method further includes loading, by the controller of the storage device, the application into the program slot based on the association and the request. The method further includes executing, at the processing device of the storage device, the application in the program slot.

Secure applications in computational storage devices

A storage system is disclosed. The storage system may include a first storage device and a second storage device. A receiver may receive an encoded stream. A splitter may identify a first chunk of data in the encoded stream and a second chunk of data in the encoded stream. A distributor may store the first chunk of data on the first storage device and the second chunk of data on the second storage device.

Video stream encoding for computational storage device

A method for data encryption may include receiving input data, finding a delimiter in the input data, generating, based on a position of the delimiter in the input data, a portion of data using a part of the input data, and encrypting the portion of data. The input data may include a record, the delimiter indicates a boundary of the record, and the portion of data may include the record. The position of the delimiter may be in the part of the input data. Generating the portion of data may include generating the portion of data based on a subset of the part of the input data. The part of the input data may be a first part of the input data, and the position of the delimiter may be in a second part of the input data.

Systems, methods, and apparatus for dividing and encrypting data

A persistent memory device is disclosed. The persistent memory device may include a cache coherent interconnect interface. The persistent memory device may include a volatile storage and a non-volatile storage. The volatile storage may include at least a first area and a second area. A backup power source may be configured to provide backup power selectively to the second area of the volatile storage. A controller may control the volatile storage and the non-volatile storage. The persistent memory device may use the backup power source while transferring a data from the second area of the volatile storage to the non-volatile storage based at least in part on a loss of a primary power for the persistent memory device.

Persistent memory with cache coherent interconnect interface

A storage device includes non-volatile memory, a storage controller including a first controller processor connected to the non-volatile memory, and a second controller processor connected to the non-volatile memory, and shared memory to store a mapping table. The shared memory may be connected to the first controller processor and the second controller processor to share mapping table information between the first controller processor and the second controller processor. The storage controller may set a power mode of the first controller processor and the second controller processor based on an input/output intensity.

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Palo Alto, CA, United States of America

Sungwook Ryu