Patent ID: 7949693
Filing Date: 2011-05-24
Classification: G06F

Abstract:
1. A method of communicating data between a host computer and a client computer, the method comprising: receiving, by the host computer, a write request from the client computer, the write request comprising first data and first metadata describing a first logical position of the first data within a file, wherein the first data is encrypted to the host computer, wherein the first metadata is unencrypted to the host computer, wherein the host computer comprises a processor and operatively associated data storage, and wherein the file is stored at the data storage; writing the first data to the data storage, wherein the first data is written as a data sub-file of the file, wherein the data sub-file logically replaces a second data sub-file having the same logical position; creating a metadata sub-file utilizing the first metadata, wherein the metadata sub-file comprises logical-to-physical mapping information linking the first logical position of the first data within the file to the physical position of the data sub-file within the file; and writing the metadata sub-file to the data storage, wherein the data sub-file and the metadata sub-file are organized within the file according to a log-structured organization.