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    • 91. 发明申请
    • LOGICAL TO PHYSICAL ADDRESS MAPPING IN STORAGE SYSTEMS COMPRISING SOLID STATE MEMORY DEVICES
    • 在包含固态存储器件的存储系统中逻辑地址映射
    • WO2012014140A2
    • 2012-02-02
    • PCT/IB2011/053299
    • 2011-07-25
    • INTERNATIONAL BUSINESS MACHINES CORPORATIONBUX, WernerHAAS, RobertHU, XiaoyuPLETKA, Roman, A.
    • BUX, WernerHAAS, RobertHU, XiaoyuPLETKA, Roman, A.
    • G06F12/02
    • G06F12/0246G06F12/0848G06F12/0866G06F2212/214G06F2212/221G06F2212/222G06F2212/466G06F2212/7201
    • The present idea provides a high read and write performance from/to a solid state memory device. The main memory (31) of the controller (1) is not blocked by a complete address mapping table covering the entire memory device (2). Instead such table is stored in the memory device (2) itself, and only selected portions of address mapping information are buffered in the main memory (31) in a read cache (311) and a write cache (312). A separation of the read cache (311) from the write cache (312) enables an address mapping entry being evictable from the read cache (311) without the need to update the related flash memory page storing such entry in the flash memory device (2). By this design, the read cache (311) may advantageously be stored on a DRAM even without power down protection, while the write cache (312) may preferably be implemented in nonvolatile or other fail-safe memory. This leads to a reduction of the overall provisioning of nonvolatile or fail-safe memory and to an improved scalability and performance.
    • 本想法提供了从/到固态存储器件的高读/写性能。 控制器(1)的主存储器(31)不被覆盖整个存储器件(2)的完整地址映射表阻塞。 相反,这样的表被存储在存储器件(2)本身中,并且只有地址映射信息的选择部分被缓存在读取高速缓存(311)和写入高速缓存(312)中的主存储器(31)中。 读取高速缓存(311)与写入高速缓存(312)的分离使得能够从读取的高速缓存(311)中消除地址映射条目,而不需要在闪存设备(2)中更新存储这样的条目的相关闪存页面 )。 通过该设计,即使没有掉电保护,读高速缓存(311)也可有利地存储在DRAM上,而写高速缓存(312)可优选地被实现在非易失性或其他故障安全存储器中。 这导致了非易失性或故障安全存储器的总体配置的减少以及改进的可扩展性和性能。
    • 92. 发明申请
    • APPARATUS, SYSTEM, AND METHOD FOR IMPROVED DATA DEDUPLICATION
    • 用于改进数据重复的装置,系统和方法
    • WO2011025967A3
    • 2011-06-16
    • PCT/US2010047012
    • 2010-08-27
    • FUSION IO INC
    • THATCHER JONATHANFLYNN DAVIDSTRASSER JOHN
    • G06F21/24G06F9/06G06F13/14G06F15/16
    • G06F3/0641G06F3/0608G06F3/0679G06F3/0689G06F12/0866G06F2212/214
    • An apparatus, system, and method are disclosed for improved deduplication. An input module 312, hash module 314, and transmission module 316 are implemented in a nonvolatile storage device 210. The input module 312 receives hash requests 302 from requesting entities internal or external to the nonvolatile storage device 210. Hash requests include a data unit identifier that identifies the data unit for which the hash is requested. The hash module 314 generates a hash for the data unit using a hash function. The hash is generated using computing resources of the nonvolatile storage device 210. The transmission module 316 sends the hash to a receiving entity when the input module 312 receives the hash request. A deduplication agent 110 uses the hash to determine whether or not the data unit is a duplicate of a data unit already stored in the storage system that includes the nonvolatile storage device 210.
    • 公开了用于改进重复数据消除的装置,系统和方法。 输入模块312,散列模块314和传输模块316被实现在非易失性存储设备210中。输入模块312从非易失性存储设备210的内部或外部的请求实体接收散列请求302。散列请求包括数据单元标识符 标识要求哈希的数据单元。 散列模块314使用散列函数生成数据单元的散列。 使用非易失性存储设备210的计算资源生成散列。当输入模块312接收到散列请求时,传输模块316将散列发送到接收实体。 重复数据消除代理110使用散列来确定数据单元是否已经存储在包括非易失性存储设备210的存储系统中的数据单元的副本。