Pure Storage, Inc.

Wei Tang

Andrew R Bernat

Gordon James Coleman

Peter E Kirkpatrick

John Roper

Ronald S Karr

Timothy W Brennan

Eric D Seppanen

Daniel Sladic

Phillip Hord

A command to relocate data from a first set of data blocks at the plurality of storage devices to a second set of data blocks while bypassing the storage controller is transmitted by the storage controller. The command includes address information associated with the second set of blocks to store the relocated data.

Optimized read request processing for relocated data

Performing a tune-up procedure on a storage device including determining, during a boot process, that a first storage device is available for a tune-up procedure, wherein the tune-up procedure prepares the first storage device for use after being offline; reserving the first storage device to perform the tune-up procedure, wherein reserving the first storage device prevents another system from performing the tune-up procedure on the first storage device; and executing the tune-up procedure on the first storage device.

Efficient storage device tune-up

A set of blocks of a storage device are allocated for storage of data, wherein the set of blocks of the storage device is selected based on a power requirement that is based on a number of partially programmed blocks stored in the cache. Subsequent data to be stored at the storage device is assigned to the set of blocks for storage at the storage device.

Allocation of blocks based on power loss protection

Configuring a flash-based storage device

Continuous value data redundancy, including: receiving, by a storage system, a dataset; determining, based on a data resiliency metric, an integer redundancy value for the dataset from among a plurality of redundancy values; and generating, based on the integer redundancy value for the dataset, data recovery information for the dataset, wherein the integer redundancy value for the dataset is different from at least one other integer redundancy value for another dataset stored within the storage system.

Generating recovery information using data redundancy

A storage unit has one or more processing devices, a solid-state drive and an open blocks cache memory. The open blocks cache memory holds open blocks of data or metadata and holds closed blocks of data or metadata pending writing to the solid-state drive. Closed blocks of data or metadata are written to the solid-state drive and open blocks of data or metadata are written to the open blocks cache memory. Values for open blocks in the open blocks cache memory are tracked. The values are adjusted in a first direction when an open block is written to the open blocks cache memory, and the values are adjusted in a second direction when an open block in the open blocks cache memory is closed and written from the open blocks cache memory to the solid-state drive.

Budgeting open blocks of a storage unit based on power loss prevention

A command to relocate data is transmitted by a storage controller. The command includes first address information associated with a first set of blocks storing the data at one or more storage devices using a first programming mode and second address information associated with a second set of blocks at the one or more storage devices to store the relocated data using a second programming mode. The command causes the relocation of the data from the first set of blocks to the second set of blocks while bypassing sending the data to the storage controller. An acknowledgement is received that the relocated data has been stored at the second number of blocks.

Relocation of data for heterogeneous storage systems

Intelligent power loss protection based block allocation

Efficient relocation of data utilizing different programming modes

Continuous value data redundancy

A storage system includes solid-state storage devices and a storage controller operatively coupled to the solid-state storage devices, the storage controller including a processing device, the processing device to receive, from a solid-state storage device of the solid-state storage devices, an indication of an occurrence of triggering event associated with data stored at a first data block of the solid-state storage device. In response to receiving the indication of the occurrence of the triggering event, a second data block of the solid-state storage device is identified for storage of the data. A command in transmitted to the solid-state storage device that includes address information associated with the second data block of the solid-state storage device for storage of the data, wherein the command causes the solid-state storage device to program the data to the second data block.

Local relocation of data stored at a storage device of a storage system

A power requirement associated with a storage device of the plurality of storage devices is determined. A set of blocks of the storage device is allocated for storage of data, wherein the set of blocks of the storage device is less than the power requirement of the storage device. User data to be stored at the storage system is received. The user data is assigned to the set of blocks for storage at the storage device.

Dynamic allocation of blocks of a storage device based on power loss protection

A storage system includes a plurality of solid-state storage devices and a storage controller operatively coupled to the plurality of solid-state storage devices, the storage controller including a processing device, the processing device to receive, from a first solid-state storage device of the plurality of solid-state storage devices, an indication that data stored at the first solid-state storage device is affected by read disturb. In response to receiving the indication, the processing device is further to identify a second solid-state storage device of the plurality of solid-state storage devices for the relocation of the data and transmit, to the first solid-state storage device, a command comprising information associated with the relocation of the data from the first solid-state storage device to the second solid-state storage device, wherein the command causes the first solid-state storage device to relocate the data to the second solid-state storage device.

Efficient relocation of data between storage devices of a storage system

Maintaining data associate with a storage device is described. A method may include receiving, by an application executed by a storage array controller of a host server of a solid-state storage array comprising a plurality of solid-state storage devices, an indication of a change in state of a solid-state storage device of the plurality of solid-state storage devices. In response to receiving the indication, the method may also include retrieving a plurality of tables stored at a volatile memory of the solid-state storage device, the plurality of tables comprising information associated with characteristics of a plurality of data blocks of the solid-state storage device. The method may also include identifying one or more rules associated with the plurality of tables and creating, by the storage array controller, a new plurality of tables based on the one or more rules.

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San Jose, CA, United States of America

Wei Tang