Patent ID: 9582377
Date: 2017-02-28
CPC Classifications: G06F

Claim:
1. A method of providing a remirror buffer for fault tolerance in a service provider with a plurality of resource hosts, the method comprising: storing data on a master resource host; replicating the data from the master resource host to a slave resource host so that the slave resource host serves as a backup in case of failure of the master resource host; identifying a group of resource hosts based at least in part on a risk boundary, the group including one of the master resource host and the slave resource host; maintaining a remirror buffer, wherein the remirror buffer comprises resource capacity for storing data in case of failure of either the master resource host or the slave resource host; determining storage usage associated with the group of resource hosts; and modifying, based on the determined storage usage, a threshold level of the resource capacity of the remirror buffer, so that the level at least meets the determined storage usage.