发明名称 |
Nonvolatile storage thresholding |
摘要 |
Embodiments for facilitating data transfer between a nonvolatile storage (NVS) write cache and a pool of target storage devices are provided. Each target storage device in the pool of target storage devices is determined as one of a hard disk drive (HDD) and a solid-state drive (SSD) device, and classified into one of a SSD rank group and a HDD rank group. If no data is received in the NVS write cache for a predetermined time to be written to a target storage device classified in the SSD rank group, a threshold of available space in the NVS write cache is set to allocate at least a majority of the available space to the HDD rank group. Upon receipt of a write request for the SSD rank group, the threshold of the available space is reduced to allocate a greater portion of the available space to the SSD rank group. |
申请公布号 |
US8140811(B2) |
申请公布日期 |
2012.03.20 |
申请号 |
US20090489107 |
申请日期 |
2009.06.22 |
申请人 |
ASH KEVIN J.;GUPTA LOKESH M.;KALOS MATTHEW J.;SANCHEZ ALFRED E.;TODD KENNETH W.;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
ASH KEVIN J.;GUPTA LOKESH M.;KALOS MATTHEW J.;SANCHEZ ALFRED E.;TODD KENNETH W. |
分类号 |
G06F12/08;G06F13/00 |
主分类号 |
G06F12/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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