Patent ID: 9582559
Date: 2017-02-28
CPC Classifications: G06F

Claim:
1. An apparatus comprising: at least a first site and a second site of a multi-site storage system; the first site comprising: the second site comprising: wherein the replicated version of the first file system and the second file system are coupled to the first and second virtual block storage appliances, respectively, within the second site; wherein the first and second virtual block storage appliances of the second site interact with the first and second virtual block storage appliances of the first site in providing said cache-level synchronization; wherein the first virtual block storage appliances of the first and second sites exchange synchronization information over a network that interconnects the first and second sites; wherein the first site further comprises a first data mover associated with the cache of the first file system at the first site and the cache of the replicated version of the second file system at the first site; wherein the first and second virtual block storage appliances of the first site are respectively and operatively coupled to the cache of the first file system at the first site and the cache of the replicated version of the second file system at the first site; wherein the second site further comprises a second data mover associated with the cache of the second file system at the second site and the cache of the replicated version of the first file system at the second site; and wherein the first and second virtual block storage appliances of the second site are respectively and operatively coupled to the cache of the second file system at the second site and the cache of the replicated version of the first file system at the second site.