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    Intra-block memory wear leveling
    2.
    发明专利
    Intra-block memory wear leveling 未知

    公开(公告)号：GB2509478B

    公开(公告)日：2016-08-17

    申请号：GB201205097

    申请日：2010-11-29

    Applicant: IBM

    Inventor： THEODOROS A ANTONAKOPOULOS ,  ROY DARON CIDECIYAN ,  XIAO-YU HU ,  ILIAS ILIADIS ,  ROMAN A PLETKA

    IPC: G06F12/02 ,  G06F3/06

    Abstract: A method for intra-block wear leveling within solid-state memory subjected to wear, having a plurality of memory cells includes the step of writing to at least certain ones of the plurality of memory cells, in a non-uniform manner, such as to balance the wear of the at least certain ones of the plurality of memory cells within the solid-state memory, at intra-block level. For example, if a behavior of at least some of the plurality of memory cells is not characterized, then the method may comprise characterizing a behavior of at least some of the plurality of memory cells and writing to at least certain ones of the plurality of memory cells, based on the characterized behavior, and in a non-uniform manner.

    Solid-state storage system with parallel access of multiple flash/pcm devices
    3.
    发明专利
    Solid-state storage system with parallel access of multiple flash/pcm devices 未知

    公开(公告)号：GB2488057B

    公开(公告)日：2017-12-06

    申请号：GB201207470

    申请日：2010-11-26

    Applicant: IBM

    Inventor： THEODORE A ANTONAKOPOULOS ,  ROY DARON CIDECIYAN ,  EVANGELOS S ELEFTHERIOU ,  ROBERT HAAS ,  XIAO-YU HU ,  ILIAS ILIADIS

    IPC: G06F11/10 ,  G11C29/00

    Abstract: Systems and methods are provided that confront the problem of failed storage integrated circuits (ICs) in a solid state drive (SSD) by using a fault-tolerant architecture along with one error correction code (ECC) mechanism for random/burst error corrections and an L-fold interleaving mechanism. The systems and methods described herein keep the SSD operational when one or more integrated circuits fail and allow the recovery of previously stored data from failed integrated circuits and allow random/burst errors to be corrected in other operational integrated circuits. These systems and methods replace the failed integrated circuits with fully functional/operational integrated circuits treated herein as spare integrated circuits. Furthermore, these systems and methods improve I/O performance in terms of maximum achievable read/write data rate.

    Storage system
    6.
    发明专利
    Storage system 未知

    公开(公告)号：GB2529669B8

    公开(公告)日：2017-03-15

    申请号：GB201415248

    申请日：2014-08-28

    Applicant: IBM

    Inventor： GIOVANNI CHERUBINI ,  ILIAS ILIADIS ,  JENS JELITTO ,  VINODH VENKATESAN

    IPC: G06F3/06

    Abstract: A storage system and a method for storing a data segment, a storage capacity manager and a method for managing a capacity of a storage unit, and a storage tier relocation manager and a method for relocating a data segment. The storage system includes at least two storage tiers, an access pattern evaluator, a classification unit, a selector, and logic. The storage capacitor manager includes a monitoring unit and capacity managing unit. The storage tier relocation manager includes a target storage tier, the data segment relocated to the target storage tier, and a protection measure.

    Storage system and method for operating a storage system
    9.
    发明专利
    Storage system and method for operating a storage system 未知

    公开(公告)号：GB2531074A

    公开(公告)日：2016-04-13

    申请号：GB201418000

    申请日：2014-10-10

    Applicant: IBM

    Inventor： ILIAS ILIADIS ,  JENS JELITTO ,  YUSIK KIM ,  SLAVISA SARAFIJANOVIC ,  VINODH VENKATESAN

    IPC: G06F3/06 ,  G06F11/30

    Abstract: Disclosed is a storage system 100 with a data storage device 200 including a number N of removable storage media 211 - 21N for storing data, with N > 2, and a number m of drives 221 - 22m, with m > 1. Each of the drives, drives one of the removable storage media when mounted to a drive. The storage system includes a server 300 coupled to the data storage device to service requests R from clients, and a controller 400 which controls the data storage device to adaptively un-mount the removable storage media based on monitored information I of the requests at the data storage device, states of the drives S1, and the states of the removable storage media S2. The monitoring information may include an arrival rate of requests, total size of the requests and/or the average size of the requests received. The controller may also use the number of storage media, the arrival rate distribution of the media and the performance characteristics of the drives, to base the un-mounting of the storage media.

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