METHOD FOR BACKING UP DATA IN A CASE OF POWER FAILURE OF STORAGE SYSTEM, AND STORAGE SYSTEM CONTROLLER

摘要

The present invention discloses a method for backing up data in a case of a power failure of a storage system including: when a power failure is detected, acquiring current refresh progress of a buffer in a storage system, an address, in the buffer, of data that is in the buffer and needs to be backed up to a non-volatile memory in the storage system, and a first time required for backing up the data; calculating, according to the current refresh progress of the buffer and the address of the data in the buffer, a second time for which the data can at least keep being not lost since a last refresh; and stopping refreshing the buffer, and backing up the data to the non-volatile memory, if the second time is greater than the first time.

主权项

1. A method for backing up data in a case of a power failure of a storage system, the method comprising:
when a power failure is detected, acquiring current refresh progress of a buffer in a storage system, an address, in the buffer, of data that is in the buffer and needs to be backed up to a non-volatile memory in the storage system, and a first time required for backing up the data; calculating, according to the current refresh progress of the buffer and the address of the data in the buffer, a second time for which the data can at least keep being not lost since a last refresh; and stopping refreshing the buffer, and backing up the data to the non-volatile memory, if the second time is greater than the first time.