title: Upscaling the MPT
creators: Peter May Kevin Davies
abstract: The Minimum Preservation Tool (MPT), developed by the British Library, provides a local technical digital preservation environment to routinely fixity-check collections awaiting ingest into a long-term digital repository. Within the Library this was deployed on a standard-provision Virtual Machine using the same SHA-256 hash function as our long-term digital repository. This operates effectively for the collections currently under MPT control, but to be confident managing larger and more varied collections, we look to understand how performance can be improved, for example through use of different hash functions or through greater parallelization. This poster outlines experimental findings exploring the effect on performance of four different hash functions and four sizes of parallel processes, across three broad corpora (large, mixed, and small file-sizes).
keywords: minimum preservation tool performance checksum