Pure Storage, Inc.

Brandon Davis

Matthew Paul Fay

Ronald S Karr

Benjamin Scholbrock

Andrew R Bernat

Mark L McAuliffe

Wentian Cui

Zoltan DeWitt

Yanwei Jiang

Phillip Hord

Naveen Neelakantam

Constantine P Sapuntzakis

Scott Chao

Nathan David Parrish

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, to store sets of data at one or more solid-state storage devices of the plurality of solid-state storage devices. The processing device may also generate tags for each of the sets of data based on one or more metadata items associated with each set of data. The processing device may also determine an expected lifespan for each set of data based on the one or more tags generated for the respective set of data. The processing device may also group each of the one or more sets of data into respective ones of a plurality of memory blocks based on the expected lifespan for each set of data, wherein each memory block corresponds to sets of data of a particular expected lifespan.

Intelligent grouping of data based on expected lifespan

A storage system and related method are for operating solid-state storage memory in a storage system. Zones of solid-state storage memory are provided. Each zone includes a portion of the solid-state storage memory. The zone has a data write requirement for the zone for reliability of data reads. The storage system adjusts power loss protection for at least one zone. The adjusting is based on the data write requirement for the zone and responsive to detecting a power loss.

Power loss protection based on write requirements

Dynamic use of segment or zone power loss protection in a flash device

A storage system with garbage collection prioritizes data segments for garbage collection in the storage memory. Priority of each data segment relates to amount of processing device work for garbage collection of the data segment versus benefit relating to amount of dead data to be reclaimed by garbage collection of the data segment. Garbage collection is performed according to the priority of each data segment.

Optimizing garbage collection across heterogeneous flash devices

A determination as to whether a section of a storage device of a plurality of storage devices of the storage system corresponds to one or more check-pointed data sets of a plurality of check-pointed data sets that identifies one or more regions of the section having overwritten data is made. A garbage collection process is performed on the one or more regions of the section having overwritten data upon determining that the section corresponds to the one or more check-pointed data sets.

Optimizing garbage collection using check pointed data sets

A method of scalable garbage collection includes receiving an indication to perform a garbage collection process on a section of a database of a storage array comprising a plurality of storage devices. The method further includes determining, by a processing device of a storage array controller of the storage array, whether the section corresponds to any check-pointed data set. The method further includes, if the section does not correspond to any check-pointed data set: performing the garbage collection process on the section. The method further includes, if the section does correspond to a check-pointed data set: performing, by the processing device, a scalable garbage collection process on the section.

Scalable garbage collection

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Mountain View, CA, United States of America

Brandon Davis