Method for doubly backing up files asynchronously
AssigneeAlcatel Lucent
InventorsJing Xia, Xiaoping She, Min Zhang
Life of this patent
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Abstract
The present invention proposes a method for doubly backing up files asynchronously, wherein at least two first network elements share a second network element, both of said first network elements include respectively an active file handling device and a standby file handling device, characterized in that, said active file handling device copies the files to the second network element, if said standby file handling device finds that said active file handling device misses the files, said standby file handling device copies backups of the files to said active file handling device, thus the files stored in said active file handling device and the files stored in said standby file handling device being synchronized.
Claims13
An apparatus, comprising:
- an active file handling device comprising an at least first file and an at least second file, said active file handling device being configured to copy said at least second file to a network element;
- and
- a standby file handling device comprising an at least first backup file associated with said at least first file in said active file handling device and an at least second backup file associated with said at least second file in said active file handling device, said standby file handling device being configured to copy said at least first backup file to said at least first file in said active file handling device when said standby file handling device finds that said active file handling device misses said at least first file, wherein said standby file handling device is not configured to synchronize said at least second backup file with said at least second file in said active file handling device when said standby file handling device finds that said active file handling device misses said at least second file, and wherein said standby file handling device is not configured to transfer said at least first backup file to said at least second backup file.
A system comprising at least two first network elements that share an active second network element and a standby second network element, wherein said active second network element comprises an at least second file associated with an at least second backup file in said standby second network element, and wherein said at least two first network elements comprise:
- an active file handling device comprising an at least first file, said active file handling device being configured to copy said at least first file to said active second network element;
- and
- a standby file handling device comprising an at least first backup file associated with said at least first file in said active file handling device, said standby file handling device being configured to copy said at least first backup file to said at least first file of said active file handling device when said standby file handling device finds that said active file handling device misses said at least first file, wherein said standby file handling device is not configured to copy said at least first backup file to said active second network element and said standby second network element;
- and
- wherein said standby second network element is not configured to synchronize said at least second backup file with said at least second file in said active second network element when said standby second network element finds that said active second network element misses said at least second file.
Dependencies are inferred from the claim text.