How should I test whether backed-up property documents remain readable?

Test recovery, not just storage

Choose a sample covering older and newer files, large plans, scanned deeds, translations and email attachments. Restore copies from the backup into a separate working location and open them with suitable software. Confirm that text, seals, page edges and plan legends remain readable when enlarged.

Check page counts, filenames and links against your document index. A file that opens may still be incomplete, contain a blank scan or refer to a missing attachment. Include encrypted material in the test and confirm that authorised access can be restored without sharing passwords insecurely.

Keep a dated test log showing failures and the action taken. Preserve source files when creating more accessible formats, and avoid replacing originals with compressed or edited versions. Ask your Greek lawyer which electronic records need associated signatures, validation data or paper originals for their intended use. Technical readability does not establish authenticity or official acceptability; those questions need separate assessment by the receiving professional or authority.