Preventing data loss in a storage system

Details Preventing data loss in a storage system Preventing data loss in a storage system

2007-11-13

2011-12-06

Song, Jasmine (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S118000, C711SE12069, C714S006220, C714S006300, C714S015000

Reexamination Certificate

active

08074019

ABSTRACT:
Storage servers use a fast, non-volatile or persistent memory to store data until it can be written to slower mass storage devices such as disk drives. If the server crashes before a write can complete, the data remains safely stored in non-volatile memory. If the data cannot be committed to disk when the server reboots (e.g. because the destination mass storage device is unavailable), it is stored in a file. When the disk reappears, the data in the file may be used to restore a file or file system on the disk to a consistent state.

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