Invention Application
WO2017146805A1 EFFICIENT IMPLEMENTATION OF OPTIMIZED HOST-BASED GARBAGE COLLECTION STRATEGIES USING XCOPY AND MULTIPLE LOGICAL STRIPES
审中-公开
利用XCOPY和多个逻辑条带优化基于主机的垃圾收集策略的有效实施
- Patent Title: EFFICIENT IMPLEMENTATION OF OPTIMIZED HOST-BASED GARBAGE COLLECTION STRATEGIES USING XCOPY AND MULTIPLE LOGICAL STRIPES
- Patent Title (中): 利用XCOPY和多个逻辑条带优化基于主机的垃圾收集策略的有效实施
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Application No.: PCT/US2016/067726Application Date: 2016-12-20
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Publication No.: WO2017146805A1Publication Date: 2017-08-31
- Inventor: O'KRAFKA, Brian, W. , BOLKHOVITIN, Vladislav , SHIVHARE, Vivek
- Applicant: SANDISK TECHNOLOGIES LLC
- Applicant Address: 6900 North Dallas Parkway, Suite 325 Plano, Texas 75024 US
- Assignee: SANDISK TECHNOLOGIES LLC
- Current Assignee: SANDISK TECHNOLOGIES LLC
- Current Assignee Address: 6900 North Dallas Parkway, Suite 325 Plano, Texas 75024 US
- Agency: WILLIAMS, Gary, S. et al.
- Priority: US62/298,939 20160223; US15/208,540 20160712
- Main IPC: G06F12/02
- IPC: G06F12/02 ; G06F3/06 ; G06F11/10
Abstract:
Systems, methods and/or devices are used for efficient implementation of optimized host-based garbage collection strategies using xcopy and arrays of flash devices. In one aspect, a method of managing a storage system having one or more storage devices includes a host-based garbage collection operation that includes identifying two or more logical stripes in accordance with data storage information stored at the host system, and enabling a process of coalescing valid data in the two or more logical stripes. Further, the use of an internal copy operation (e.g., xcopy), allows the host-based garbage collection operation to occur without transferring data back to the host, thus minimizing the number of I/O operations between the host and storage devices. Additionally, use of the host-based garbage collection operation allows more sophisticated garbage collection algorithms (e.g., matching the current workload) to be used, and ensures that multiple logical stripes are available to write data.
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