发明授权
- 专利标题: Write-erase endurance lifetime of memory storage devices
- 专利标题(中): 存储器存储设备的写擦除耐久寿命
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申请号: US12511577申请日: 2009-07-29
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公开(公告)号: US08402242B2公开(公告)日: 2013-03-19
- 发明人: Xiao-yu Hu , Evangelos S. Eleftheriou , Robert Haas
- 申请人: Xiao-yu Hu , Evangelos S. Eleftheriou , Robert Haas
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Cantor Colburn LLP
- 代理商 Daniel Morris
- 主分类号: G06F12/00
- IPC分类号: G06F12/00
摘要:
A memory management system and method for managing memory blocks of a memory device of a computer. The system includes a free block data structure including free memory blocks for writing, and sorting the free memory blocks in a predetermined order based on block write-erase endurance cycle count and receiving new user-write requests to update existing data and relocation write requests to relocate existing data separately, a user-write block pool for receiving youngest blocks holding user-write data (i.e., any page being updated frequently) from the free block data structure, a relocation block pool for receiving oldest blocks holding relocation data (i.e., any page being updated infrequently) from the free block data structure, and a garbage collection pool structure for selecting at least one of user-write blocks and relocation blocks for garbage collection, wherein the selected block is moved back to the free block data structure upon being relocated and erased.
公开/授权文献
- US20110029715A1 WRITE-ERASE ENDURANCE LIFETIME OF MEMORY STORAGE DEVICES 公开/授权日:2011-02-03
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