Invention Grant
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
- Patent Title: Implementing large block random write hot spare SSD for SMR RAID
- Patent Title (中): 为SMR RAID实现大块随机写入热备用SSD
-
Application No.: US13410089Application Date: 2012-03-01
-
Publication No.: US08909859B2Publication Date: 2014-12-09
- Inventor: Zvonimir Z. Bandic , Cyril Guyot , Tomohiro Harayama , Hitoshi Kamei , Takaki Nakamura , Timothy Tsai
- Applicant: Zvonimir Z. Bandic , Cyril Guyot , Tomohiro Harayama , Hitoshi Kamei , Takaki Nakamura , Timothy Tsai
- Applicant Address: NL Amsterdam
- Assignee: HGST Netherlands B.V.
- Current Assignee: HGST Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agent Joan Pennington
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F12/02 ; G06F3/06
Abstract:
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.
Public/Granted literature
- US20130232292A1 IMPLEMENTING LARGE BLOCK RANDOM WRITE HOT SPARE SSD FOR SMR RAID Public/Granted day:2013-09-05
Information query
