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1. 发明申请

US20110066808A1 Apparatus, System, and Method for Caching Data on a Solid-State Storage Device 有权
标题翻译：用于在固态存储设备上缓存数据的装置，系统和方法
公开(公告)号：US20110066808A1
公开(公告)日：2011-03-17
申请号：US12877971
申请日：2010-09-08
申请人： David Flynn , John Strasser , Jonathan Thatcher , David Atkisson , Michael Zappe , Joshua Aune , Kevin B. Vigor
发明人： David Flynn , John Strasser , Jonathan Thatcher , David Atkisson , Michael Zappe , Joshua Aune , Kevin B. Vigor
IPC分类号： G06F12/08 , G06F12/00
CPC分类号： G06F12/0246 , G06F12/0866 , G06F2212/214 , G06F2212/7201 , G06F2212/7205 , G06F2212/7207
摘要： An apparatus, system, and method are disclosed for caching data on a solid-state storage device. The solid-state storage device maintains metadata pertaining to cache operations performed on the solid-state storage device, as well as storage operations of the solid-state storage device. The metadata indicates what data in the cache is valid, as well as information about what data in the nonvolatile cache has been stored in a backing store. A backup engine works through units in the nonvolatile cache device and backs up the valid data to the backing store. During grooming operations, the groomer determines whether the data is valid and whether the data is discardable. Data that is both valid and discardable may be removed during the grooming operation. The groomer may also determine whether the data is cold in determining whether to remove the data from the cache device. The cache device may present to clients a logical space that is the same size as the backing store. The cache device may be transparent to the clients.
摘要翻译：公开了用于在固态存储设备上缓存数据的装置，系统和方法。固态存储装置保持关于在固态存储装置上执行的高速缓存操作的元数据以及固态存储装置的存储操作。元数据指示高速缓存中的数据是有效的，以及关于非易失性缓存中的哪些数据已经存储在后备存储中的信息。备份引擎通过非易失性缓存设备中的单元进行工作，并将有效数据备份到后备存储。在修饰操作期间，groomer确定数据是否有效以及数据是否可以丢弃。有效和可丢弃的数据在整理操作期间可能会被删除。在确定是否从高速缓存设备移除数据时，groomer还可以确定数据是否冷。高速缓存设备可以向客户端呈现与后备存储大小相同的逻辑空间。高速缓存设备对客户端可能是透明的。

2. 发明授权

US08719501B2 Apparatus, system, and method for caching data on a solid-state storage device 有权
标题翻译：用于在固态存储设备上缓存数据的装置，系统和方法
公开(公告)号：US08719501B2
公开(公告)日：2014-05-06
申请号：US12877971
申请日：2010-09-08
申请人： David Flynn , John Strasser , Jonathan Thatcher , David Atkisson , Michael Zappe , Joshua Aune , Kevin B. Vigor
发明人： David Flynn , John Strasser , Jonathan Thatcher , David Atkisson , Michael Zappe , Joshua Aune , Kevin B. Vigor
IPC分类号： G06F12/00
CPC分类号： G06F12/0246 , G06F12/0866 , G06F2212/214 , G06F2212/7201 , G06F2212/7205 , G06F2212/7207
摘要： An apparatus, system, and method are disclosed for caching data on a solid-state storage device. The solid-state storage device maintains metadata pertaining to cache operations performed on the solid-state storage device, as well as storage operations of the solid-state storage device. The metadata indicates what data in the cache is valid, as well as information about what data in the nonvolatile cache has been stored in a backing store. A backup engine works through units in the nonvolatile cache device and backs up the valid data to the backing store. During grooming operations, the groomer determines whether the data is valid and whether the data is discardable. Data that is both valid and discardable may be removed during the grooming operation. The groomer may also determine whether the data is cold in determining whether to remove the data from the cache device. The cache device may present to clients a logical space that is the same size as the backing store. The cache device may be transparent to the clients.
摘要翻译：公开了用于在固态存储设备上缓存数据的装置，系统和方法。固态存储装置保持关于在固态存储装置上执行的高速缓存操作的元数据以及固态存储装置的存储操作。元数据指示高速缓存中的数据是有效的，以及关于非易失性缓存中的哪些数据已经存储在后备存储中的信息。备份引擎通过非易失性缓存设备中的单元进行工作，并将有效数据备份到后备存储。在修饰操作期间，groomer确定数据是否有效以及数据是否可以丢弃。有效和可丢弃的数据在整理操作期间可能会被删除。在确定是否从高速缓存设备移除数据时，groomer还可以确定数据是否冷。高速缓存设备可以向客户端呈现与后备存储大小相同的逻辑空间。高速缓存设备对客户端可能是透明的。

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