Pure Storage, Inc.

Eric D Seppanen

Ronald S Karr

Robert H Lee

Gordon James Coleman

Andrew R Bernat

Neil A Vachharajani

Mark L McAuliffe

Timothy W Brennan

Peter E Kirkpatrick

Radek Aster

Boris Feigin

Benjamin Scholbrock

Neil Buda Vachharajani

Nidhi Pankaj Doshi

Wei Tang

Daniel Sladic

Tsu-Hao Chang

Yunpeng Duan

Mark L Mcauliffe

A storage array controller may receive a write request comprising data to be stored at one or more solid-state storage devices. A write granularity associated with the write request may be generated that is less than a logical block size associated with the storage array controller. The data associated with the write request may be segmented based on the generated write granularity. The write request may be executed to store the segmented data at the one or more solid-state storage devices.

Writing data to a solid state storage array to accommodate power failure

Dynamically managing control information in a storage device, including: querying, by an array management module executing on a storage array controller, the storage device for a location of control information for the storage device, the control information describing the state of one or more memory blocks in the storage device; and issuing, by the array management module in dependence upon the location of the control information for the storage device, a request to retrieve the control information for the storage device.

Maintaining control information for storage devices

A method of using flash storage devices with different sized erase blocks is provided. The method includes allocating a plurality of erase blocks of heterogeneous erase block sizes to a RAID stripe, to form a tile pattern having the heterogeneous erase block sizes in the RAID stripe. The method includes writing the RAID stripe across the flash storage devices in accordance with the allocating, and stopping the writing the RAID stripe, responsive to contents of the RAID stripe reaching a threshold.

Pattern forming for heterogeneous erase blocks

Supporting a stateless controller in a storage system, including: sending, from a storage system controller to a storage device, a request for one or more locations of control information for the storage device, the storage system controller being external to the storage device; receiving, from the storage device, the one or more locations of one or more memory blocks that include the control information; and retrieving, from the storage device, the control information from the one or more memory blocks.

Supporting a stateless controller in a storage system

Characteristics associated with a device are received from the device. Firmware for the device is generated based on the received characteristics.

Optimizing storage system performance using data characteristics

Writing data to a distributed storage system

A first data block on a storage device including a data structure of deallocated data blocks on the storage device and a corresponding program erase count value for each of the deallocated data blocks is identified. A determination as to whether a second data block from the data structure of deallocated data blocks remains deallocated after being added to the data structure of deallocated data blocks based on the program erase count value is made. The data is stored at the second data block upon determining that the second data block remains deallocated after being added to the data structure of deallocated data blocks.

Deallocated block determination

Alert tracking in storage

Write granularity for storage system

Heterogeneous erase blocks

Intelligent block deallocation verification

Offloading device management responsibilities from a storage device in an array of storage devices, including: retrieving, from the storage device, control information describing the state of one or more memory blocks in the storage device; and performing, in dependence upon the control information, a storage device management operation.

Offloading device management responsibilities of a storage device to a storage controller

Segmented write requests

Administration of control information in a storage system

A storage controller coupled to a storage array comprising one or more storage devices receive a request to write data to one of the storage devices. The storage controller determines a first data block on the storage device comprising a list of deallocated data blocks on the storage device, the list comprising a block number of each deallocated data block and an access operation count value at which each deallocated data block was deallocated. The storage controller identifies a second data block from the list of deallocated data blocks on the storage device based on a corresponding access operation count value from the list and writes the data to the second data block.

Dynamic access in flash system

Growing community of inventors

Mountain View, CA, United States of America

Eric D Seppanen