Invention Grant
US08499184B2 Method for resuming a system from a power failure after the main power supply has recovered and prior to fully recharging the backup power supply by enabling the reception of input/output commands by the cache memory at a rate proportational to the amount of charge on the backup power supply currently available
失效
在主电源恢复之后并且在备用电源完全再充电之前，通过使高速缓冲存储器的输入/输出命令以与备份电荷量成比例的速率接收的速率来恢复系统的电源故障的方法 电源当前可用
- Patent Title: Method for resuming a system from a power failure after the main power supply has recovered and prior to fully recharging the backup power supply by enabling the reception of input/output commands by the cache memory at a rate proportational to the amount of charge on the backup power supply currently available
- Patent Title (中): 在主电源恢复之后并且在备用电源完全再充电之前，通过使高速缓冲存储器的输入/输出命令以与备份电荷量成比例的速率接收的速率来恢复系统的电源故障的方法 电源当前可用
-
Application No.: US13461031Application Date: 2012-05-01
-
Publication No.: US08499184B2Publication Date: 2013-07-30
- Inventor: Gordon D. Hutchison , Paul J. Quelch
- Applicant: Gordon D. Hutchison , Paul J. Quelch
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Griffiths & Seaton PLLC
- Priority: EP09154610 20090309
- Main IPC: G06F1/00
- IPC: G06F1/00 ; G06F13/00
Abstract:
Following a loss of power, a storage system switches to a local power supply. The system switches to the local power supply, prevents the receipt of input/output commands and copies the content of cache memory to a local storage device. On detecting resumption of external power, the system charges a local power supply, copies the content of the local storage device to the cache memory and processes the content of the cache memory with respect to at least one storage volume. When the charge stored on the local power supply exceeds the charge required to copy the content of the cache memory to the local storage device by a predetermined amount, the system allows the receipt of input/output commands using a reduced portion of the cache memory. Once the charge stored on the local power supply has reached a predetermined level, the system allows the receipt of input/output commands using all cache memory.
Public/Granted literature
- US20120221879A1 THREE STAGE POWER UP IN COMPUTER STORAGE SYSTEM Public/Granted day:2012-08-30
Information query
