Need an offline backup and data access solution for Linnworks historic data.

General information for the business: Online car parts retailer Description of requirements/functionality: We are currently using Linnworks but require an offline solution to be able to backup our data so that it can be accessed from a standalone, offline system. We need to be able to access sales invoices, purchases orders etc from an offline backup of our Linnworks data. CMS and Admin requirements: Needs to be an easy to use system, that allows us to access customer records, sales history etc from part number, customer details, postcode, order number etc. We are migrating away from Linnworks so once we have finished, we want a local backup of the data that will be accessible in the future should we need to access it. We have a local server, it would be ideal if the system was located on that and accessible from up to 5 PC workstations. There is no requirement to add or edit data, just view it. It would be nice if it was able to reprint documents, ie invoices in case we should need to for book keeping purposes. Extra notes: