发明名称 ADAPTIVE OVER-PROVISIONING IN MEMORY SYSTEMS
摘要 A method for data storage includes, in a memory that includes multiple memory blocks, specifying at a first time a first over-provisioning overhead, and storing data in the memory while retaining in the memory blocks memory areas, which do not hold valid data and whose aggregated size is at least commensurate with the specified first over-provisioning overhead. Portions of the data from one or more previously-programmed memory blocks containing one or more of the retained memory areas are compacted. At a second time subsequent to the first time, a second over-provisioning overhead, different from the first over-provisioning overhead, is specified, and data storage and data portion compaction is continued while complying with the second over-provisioning overhead.
申请公布号 US2014344524(A1) 申请公布日期 2014.11.20
申请号 US201414451687 申请日期 2014.08.05
申请人 Apple Inc. 发明人 Shalvi Ofir;Sommer Naftali;Kasorla Yoav
分类号 G06F12/08;G06F11/10 主分类号 G06F12/08
代理机构 代理人
主权项 1. An apparatus, comprising: a cache memory; a long-term storage unit; and a controller configured to: receive data from a host for storage;store the data in a portion of the cache memory allocated to the host, wherein a size of the portion of the cache memory is dependent upon an over-provisioning ratio;store the data in the long-term storage unit;increase the over-provisioning ratio responsive to a determination that a rate of storage in the long-term storage unit is less than a threshold value.
地址 Cupertino CA US