Complementary space reduction

摘要

A method, article of manufacture, and apparatus for efficiently backing up information are disclosed. In an embodiment, this may comprise using a first space reduction method to space reduce data in a client, transmitting the first space reduced data from a client to an intermediate shared storage at a time convenient for the client, using a second space reduction method to space reduce data from the intermediate shared storage, transferring the second space reduced data to a server, and storing the data in a server storage.

主权项

1. A method for storing data, comprising:
using a first data deduplication method to space reduce data in a client; transmitting the first deduplicated data from a client to an intermediate shared storage at a time convenient for the client; storing the data in the intermediate shared storage as non-volatile data, wherein the intermediate shared storage includes data from other clients; using a global data deduplication method at the intermediate shared storage to space reduce data from both the client and the other clients into a second deduplicated data; transferring the second deduplicated data to a server; and storing the data in a server storage, wherein the stored data includes only single instance data.