Digital storage and preservation
PKP Preservation Network (PN)
PKP Preservation Network (PN) provides free preservation services for any OJS journal that meets the basic criteria.

LOCKSS
Open Journal Systems supports the LOCKSS (Lots of Copies Keep Stuff Safe) system that guarantees the journal a permanent and secure archive. LOCKSS is an open source program developed by the Stanford University Library that allows libraries to curate selected web journals by regularly searching registered journals to collect new published content and archive it. Each archive is continuously validated against records from other libraries, so any damaged or lost content can be restored using those records or the journal itself.
CLOCKSS
Open Journal Systems also supports CLOCKSS (Controlled Lots of Copies Keep Stuff Safe) to ensure a permanent and secure archive for the journal. CLOCKSS is based on the open source LOCKSS software developed at Stanford University Library, which allows libraries to preserve selected web journals by regularly checking registered journal websites for recently published content and archiving it. Each archive is constantly validated against other library caches and, if it is detected that the content has been corrupted or lost, the other caches or the journal are used to restore it.