Emc IP Holding Company LLC

Dell Products Inc.

Justin L Ha

Seungjune Jeon

Frederick K H Lee

Haleh Tabrizi

Andrew Cullen

Frederick Kwan Hang Lee

Samuel Hudson

Alan Hanson

Michael Rijo

A method, computer program product, and computing system for determining a maximum quantity of unit write operations serviceable by a data bus coupled to a memory system. A first data stream is received for writing data to the memory system. A first unit write operation is assigned to the first data stream. One or more supplemental unit write operations are assigned to the first data stream as needed provided that the one or more supplemental unit write operations do not result in the total unit write operations exceeding the maximum quantity of unit write operations.

Storage management system and method

A system for controlling a solid state drive is disclosed that includes a plurality of NAND memory devices, each NAND memory device further comprising at least one die, a plurality of blocks associated with each of the dies, and a plurality of pages associated with each of the blocks. A pseudo clock system configured to determine a pseudo clock value for each of the NAND memory devices. An effective retention time system coupled to the plurality of NAND memory devices and configured to determine a maximum effective retention time for each of the NAND memory devices as a function of the pseudo clock value for the NAND memory device.

Method for estimating data retention time in a solid state drive

A method for reading data from persistent storage. The method includes receiving a client read request for data from a client. The client read request includes a logical address. The method further includes determining a physical address corresponding to the logical address, determining that the physical address is directed to an open block in the persistent storage and determining that the physical address is directed to a last closed word line of the open block. The method further includes, based on these determinations, obtaining at least one read threshold value for the reading from last closed word lines, issuing a control module read request comprising the at least one read threshold value to a storage module that includes the open block, and obtaining the data from the open block using the at least one read threshold value.

Method and system for improving flash storage read performance in partially programmed blocks

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Hayward, CA, United States of America

Justin L Ha