Patent ID: 8769138
Filing Date: 2014-07-01
Classification: G06F,H04L

Abstract:
1. A device for retrieving data from a data storage system, the data storage system including a plurality of storage nodes, the device comprising: a transmitter configured to send a multicast message requesting data to the plurality of storage nodes, wherein the multicast message includes a data identifier that identifies the requested data; and a receiver configured to receive one of the requested data or a message including a reference to the requested data from a first storage node of said plurality of storage nodes after transmission of the multicast message, wherein: the transmitter is further configured to send a unicast communication requesting the requested data to at least one of the one or more storage nodes indicated in the message including the reference to the requested data on condition that the message including the reference to the requested data was received in response to the multicast message rather than the requested data being received in response to the multicast message.