Abstract: A set of data chunks stored in a first data storage system is accessed. The set of data chunks includes original data chunks and replicated data chunks respectively corresponding to the original data chunks. A given original data chunk and the corresponding replicated data chunk are stored in separate storage nodes of the first data storage system. For each of at least a subset of storage nodes of the first data storage system, unique ones of the original data chunks and the replicated data chunks stored on the storage node are aggregated to form a data object. The data objects thereby formed collectively represent a given data volume. Each of the data objects is stored in separate storage nodes of a second data storage system.

Abstract: An improved technique involves creating a new lockbox mechanism which is configured to work on a new or upgraded operating platform having different operating platform parameters, and then storing confidential information within the new lockbox (e.g., a copy of credentials which are also stored at a main site). When the new lockbox is then moved to the new or upgraded operating platform, the new lockbox mechanism properly works. Such operation enables the maintained compatibility with applications, control and maintenance of lockbox security throughout, and can be performed automatically and/or remotely.