Seagate Technology Incorporated

Robert William Dixon

Steven Scott Williams

Marc Timothy Jones

Praveen Viraraghavan

Jason Matthew Feist

Robert Dale Murphy

Hemant Vitthalrao Mane

Benjamin J Scott

Timothy Richard Feldman

Robert Barry Wood

Stanton MacDonough Keeler

Edwin Scott Olds

Stephen H Perlmutter

Anthony John Pronozuk

James Edward Dykes

Anthony Leigh Priborsky

James Arthur Herbst

Kyumsung Lee

Guy David Frick

David W Wheelock

Andrew J Louder

John Wehman

Jerry Dallmann

Jason Wayne Kinsey

Steven Scott William

Carol Michiko Baum

The technology disclosed herein pertains to a system and method for scaling storage using peer-to-peer NVMe communication, the method including selecting one of a plurality of NVMe devices as principal device to control communication with a host via a PCI switch, designating remainder of the plurality of NVMe devices as subordinate devices, and controlling the communication between the host and the subordinate devices using a PCI P2P DMA between the principal device and the subordinate devices.

Scalable storage using NVMe communication

A distributed data storage system can be configured with a host connected to a device and a distribution module. The distribution module identifies a manufacturing origin of the device and diverts a system operation from an upstream component connected to the distribution module to the device in response to the identified manufacturing origin of the device. The manufacturer installed operating parameters of the device are then used to complete the system operation.

Data storage system with distributed operations for known hardware

A distributed data storage system may connect a host to a device and a dedication module. The dedication module can identify a manufacturing origin of the device before dedicating a type of host-generated data access request to the device. The type of host-generated data access request is chosen by the dedication module in response to an operating capability correlated to the device by the dedication module based on the identified manufacturing origin. At least one host-generated request of the dedicated type is then completed with the device.

Distributed data storage system with dedicated processing lane

The technology disclosed herein provides a system including multiple selectable storage devices in an enclosure communicatively coupled to shared control electronics the shared control electronics including a first controller for selecting a storage device of the multiple selectable storage devices for execution of a device access command, the multiple scalable storage devices including a plurality of NVM storage devices and at least one hard disc drive (HDD) and a first signal path for transmitting a drive selection instruction from a host external to the enclosure to a first controller the first signal path being a PCIe electronic interface configured to communicate with a host, wherein the plurality of NVM storage devices shares a capacitor bank for power loss protection.

Operating multiple storage devices using NVM interface

A distributed data storage system can be configured with a host connected to a first device and an initialization module that performs a default initialization procedure on the first device in response to detecting the first device has an unknown manufacturing origin. Conducting the default initialization procedure may allow the first device to service data access requests from the host. In response to the connection of a second device to the host and initialization module, a manufacturing origin of the second device is identified with the initialization module before the initialization module customizes the default initialization procedure to a custom procedure that is executed to allow the second device to satisfy a background operation prescribed by the initialization module.

Custom initialization in a distributed data storage system

A data storage system may connect a host to a device and a hardware module that are utilized to satisfy at least one host-generated data access request to the device. A portion of the device is set as dormant by the hardware module prior to identifying an origin of the device with the hardware module during the satisfaction of the at least one host-generated data access request. In response to the identified origin, the previously dormant portion of the device is activated and subsequently utilized to execute a task assigned by the hardware module.

Distributed data storage system with dormant hardware activation

Systems and methods are disclosed for data storage performance scaling based on external energy. In certain embodiments, a system may comprise a data storage device having an interface to communicate with an external device, a nonvolatile memory, and a circuit. The circuit may be configured to receive an indication via the interface of power resources available to the data storage device from the external device in case of a power loss event, adjust a performance metric of the data storage device to apply when accessing the nonvolatile memory during normal power availability based on the indication, and perform operations during normal power availability based on the performance metric.

Data storage performance scaling based on external energy

Apparatus and method for storing data in a non-volatile memory (NVM), such as a flash memory in a solid-state drive (SSD). In some embodiments, a distributed storage space of the NVM is defined to extend across a plural number of regions of the NVM. A non-standard parity data set is provided having a plural number of data elements greater than or equal to the plural number of regions in the storage space. The data set is written by storing a first portion of the data elements and a first parity value to the plural number of regions and a remaining portion of the data elements and a second parity value to a subset of the plural number of regions. The regions can comprise semiconductor dies in a flash memory, and the distributed storage space can be a garbage collection unit formed using one erasure block from each flash die.

Providing additional parity for non-standard sized parity data sets

Apparatuses, systems, and methods for implementing fast resume from hibernate are disclosed. In one embodiment, an apparatus can include a data storage device having a circuit configured to determine a first memory location of hibernation data without receiving an indication of the first memory location from the host, and store the hibernation data to a second memory location of the DSD.

Fast resume from hibernate

The disclosure is related to systems and methods of nonvolatile data caching. In some embodiments, circuits or methods may be configured to store selected data to a nonvolatile data cache based on selection criteria. The selection criteria may be based on previous data access commands. The selection criteria may relate an amount of resources, such as time or power, needed to retrieve the selected data from a data storage medium. The selected data may be retrieved from the data storage medium and stored at the nonvolatile data cache during an idle state.

Selective nonvolatile data caching based on estimated resource usage

A mass data storage system includes a number of communicatively coupled storage drives powered by one or more power supplies. Shared control electronics selectively connect power and a data signal to a select storage drive via instructions within a control signal received by the common controller. Instructions for selectively powering and connecting the data signal are transmitted over a first signal path to a first controller of the shared electronics. Responsive to successful execution of the instructions, a drive access command is sent over a second different signal path to a second controller of the shared electronics.

Controller interface for operation of multiple storage drives

The disclosure is related systems and method for improved boot and resume from hibernate times in hybrid drives. In one embodiment, a device may comprise an interface circuit to communicate with a host device, a first nonvolatile data storage medium, and a controller configured to monitor the interface circuit for a trigger event and pin data associated with read requests to the first nonvolatile data storage medium during a first specific duration in response to the trigger event. Another embodiment may be a method comprising receiving a trigger event, monitoring a duration since the trigger event, retrieving data from a nonvolatile cache memory, retrieving data from a disc memory when the data is not in the nonvolatile cache memory, and pinning the data retrieved from the disc memory to the nonvolatile cache memory.

Fast boot in hybrid drives

The disclosure is related to systems and methods of dynamic dataflow in a multiple cache architecture. In an embodiment, a system having a data storage device with a multiple cache architecture may detect at least one attribute affecting a data storage workload or data storage performance. The system may select at least one of a plurality of data flow schemes based on the at least one attribute, which may be done to optimize the data storage workload for various conditions. In another embodiment, a data storage controller may automatically and dynamically select one of multiple data flow schemes within a data storage device having a multiple cache architecture. The data storage controller may monitor attributes to determine which data flow scheme to select for various workloads of the data storage device.

Dynamic data flow management in a multiple cache architecture

The disclosure is related to data storage systems having multiple cache and to management of cache activity in data storage systems having multiple cache. In a particular embodiment, a data storage device includes a volatile memory having a first read cache and a first write cache, a non-volatile memory having a second read cache and a second write cache and a controller coupled to the volatile memory and the non-volatile memory. The memory can be configured to selectively transfer read data from the first read cache to the second read cache based on a least recently used indicator of the read data and selectively transfer write data from the first write cache to the second write cache based on a least recently written indicator of the write data.

Growing community of inventors

Longmont, CO, United States of America

Robert William Dixon