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1. 发明授权

US07620772B1 Methods and structure for dynamic data density in a dynamically mapped mass storage device 有权
标题翻译：动态映射海量存储设备中动态数据密度的方法和结构
公开(公告)号：US07620772B1
公开(公告)日：2009-11-17
申请号：US11583331
申请日：2006-10-19
申请人： Bruce A. Liikanen , Mike L. Mallary , John Mead , Eric D. Mudama , John W. VanLaanen , Andrew W. Vogan
发明人： Bruce A. Liikanen , Mike L. Mallary , John Mead , Eric D. Mudama , John W. VanLaanen , Andrew W. Vogan
IPC分类号： G06F12/00
CPC分类号： G11B27/3027 , G06F2211/1004 , G11B27/322 , G11B2220/20
摘要： Methods and structures for dynamic density control to improve reliability of a dynamically mapped storage device. In a dynamically mapped storage device in which all user supplied logical blocks are dynamically mapped by the storage device controller to physical disk blocks, features and aspects hereof provide for dynamically altering the recording density of user data stored on the storage device. So long as the physical capacity utilization of the storage device permits, new data stored on the device may be stored at lower density to improve reliability in reading back the recorded data. Further features and aspects hereof may reduce the recording density only for data deemed to be critical. Radial (track) density, longitudinal (bit) density, or both may be dynamically controlled to reduce recording density. As physical capacity utilization increases, data previously recorded at lower density may be migrated (re-recorded) at normal higher density.
摘要翻译：动态密度控制的方法和结构，以提高动态映射存储设备的可靠性。在其中所有用户提供的逻辑块由存储设备控制器动态映射到物理磁盘块的动态映射存储设备中，其特征和方面提供动态地改变存储在存储设备上的用户数据的记录密度。只要存储设备的物理容量利用率允许，存储在设备上的新数据可以以较低密度存储，以提高读回记录数据的可靠性。本文的其它特征和方面可以仅对于被认为是关键的数据来降低记录密度。可以动态地控制径向（轨道）密度，纵向（位）密度或两者）以降低记录密度。随着物理容量利用的增加，以较低密度记录的数据可能以正常较高的密度迁移（重新记录）。

2. 发明授权

US07603530B1 Methods and structure for dynamic multiple indirections in a dynamically mapped mass storage device 有权
标题翻译：动态映射海量存储设备中动态多重指令的方法和结构
公开(公告)号：US07603530B1
公开(公告)日：2009-10-13
申请号：US11583623
申请日：2006-10-19
申请人： Bruce A. Liikanen , Mike L. Mallary , Andrew W. Vogan
发明人： Bruce A. Liikanen , Mike L. Mallary , Andrew W. Vogan
IPC分类号： G06F12/00
CPC分类号： G06F11/2084 , G06F11/3409 , G06F11/3485 , G11B20/1803 , G11B2220/20
摘要： Methods and structures for dynamic multiple indirections to improve reliability and performance of a dynamically mapped storage devices. In a dynamically mapped storage device in which all user supplied logical blocks are dynamically mapped by the storage device controller to physical disk blocks, features and aspects hereof provide for dynamically altering the number of replicated copies (multiple mapped indirections) of user data stored on the storage device. Performance information regarding operation of the storage device may be gathered by the storage device controller such that where physical capacity of the storage device permits and as degrading reliability is detected, additional copies (multiple indirections) of stored user data may be written to the mapped storage device. Increased multiple indirections improves reliability by decreasing the probability of data loss in response to various failure modes of the storage device. Strategic physical placement of the multiple copies (multiple indirections) may improve performance by reducing latencies associated with accessing the user data.
摘要翻译：动态多重意图的方法和结构，以提高动态映射存储设备的可靠性和性能。在其中所有用户提供的逻辑块由存储设备控制器动态地映射到物理磁盘块的动态映射存储设备中，其特征和方面提供动态地改变存储在该存储设备控制器上的用户数据的复制副本（多个映射的内容）的数量储存设备。关于存储设备的操作的性能信息可以由存储设备控制器收集，使得在存储设备的物理容量允许并且检测到劣化可靠性的情况下，存储的用户数据的附加副本（多个指令）可被写入映射存储器设备。通过减少响应于存储设备的各种故障模式的数据丢失的概率，增加的多个指令提高了可靠性。通过减少与访问用户数据相关的延迟时间，多个副本（多个指令）的战略物理放置可以提高性能。

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