PDS Cloud: Long Term Digital Preservation in the Cloud

Abstract

The emergence of the cloud and advanced objectbased storage services provides opportunities to support novel models for long term preservation of digital assets. Among the benefits of this approach is leveraging the cloud's inherent scalability and redundancy to dynamically adapt to evolving needs of digital preservation. PDS Cloud is an OAIS-based preservation-aware storage service employing multiple heterogeneous cloud providers. It materializes the logical concept of a preservation information-object into physical cloud storage objects. Preserved information can be interpreted by deploying virtual appliances in the compute cloud provisioned with cloud storage data objects together with their designated rendering software. PDS Cloud has a hierarchical data model supporting independent tenants whose assets are organized in multiple aggregations based on content and value. Continuous changes to data objects, life-cycle activities, virtual appliances and cloud providers are applied in a manner transparent to the client. PDS Cloud is being developed as an infrastructure component of the European Union ENSURE project, where it is used for preservation of medical and financial data.

Towards automated pre-ingest workflow for bridging information systems and digital preservation services

“…The Preservation DataStores (PDS) by utilizing generic cloud storage, prepares content that is to be stored by different storage providers. The PDS includes a storlet engine that can be plugged into various cloud storages to perform format transformations, redundancy detection, aggregation processes, and integrity checks (Rabinovici-Cohen et al, 2013).…”

On Cloud deployment of digital preservation environments

“…A guiding example is the Report on Digital Preservation and Cloud Services [1] that provides an overview of the strategic and technical issues surrounding the potential use of a wide range of Cloud services for preservation. In this context, particularly interesting is the importance of storage and compute synergy as emphasised in recent papers [4,5]: as storage is active over time, data migration and transformation are an integral part of the preservation digital asset 978-1-4799-5569-5/14/$31.00 c ⃝2014 IEEE.…”

Cloud services e o padrão PREMIS

“…A PDS Cloud suporta a preservação lógica e materializa o conceito de objeto de informações de preservação lógica em objetos físicos de armazenamento na nuvem, de maneira a garantir o agrupamento de metadados com dados em longo prazo, auxiliando a automação dos processos de preservação (RABINOVICI-COHEN et al, 2013).…”