发明授权
US08909859B2 Implementing large block random write hot spare SSD for SMR RAID
有权
为SMR RAID实现大块随机写入热备用SSD
- 专利标题： Implementing large block random write hot spare SSD for SMR RAID
- 专利标题（中）： 为SMR RAID实现大块随机写入热备用SSD
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申请号： US13410089申请日： 2012-03-01
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公开(公告)号： US08909859B2公开(公告)日： 2014-12-09
- 发明人: Zvonimir Z. Bandic , Cyril Guyot , Tomohiro Harayama , Hitoshi Kamei , Takaki Nakamura , Timothy Tsai
- 申请人： Zvonimir Z. Bandic , Cyril Guyot , Tomohiro Harayama , Hitoshi Kamei , Takaki Nakamura , Timothy Tsai
- 申请人地址： NL Amsterdam
- 专利权人： HGST Netherlands B.V.
- 当前专利权人： HGST Netherlands B.V.
- 当前专利权人地址： NL Amsterdam
- 代理商 Joan Pennington
- 主分类号： G06F12/00
- IPC分类号： G06F12/00 ; G06F12/02 ; G06F3/06
摘要：
A method and a storage system are provided for implementing a sustained large block random write performance mechanism for shingled magnetic recording (SMR) drives in a redundant array of inexpensive disks (RAID). A Solid State Drive (SSD) is provided with the SMR drives in the RAID. The SSD is used in a hot spare mode, which is activated when a large block random-write event is identified for a SMR drive in the RAID. In the hot spare mode, the SSD temporarily receives new incoming writes for the identified SMR drive. Then the identified SMR drive is updated from the SSD to restore the state of the identified SMR drive, and operations continue with normal writing only using the SMR drives in the RAID.
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