August 8th, 2016 by  | 2 Comments

After 2 months in production, we are now preserving 317 journals in the new PKP Private LOCKSS Network (PLN). Participation in the PKP PLN is free to anyone using PKP’s OJS software (version 2.4.8 or later), and helps to ensure your content is preserved, even in the case of a catastrophic server crash.

What is the LOCKSS Program?

The LOCKSS Program, Stanford University Libraries (Lots of Copies Keeps Stuff Safe),  provides  open source software and services. Communities use the LOCKSS software to build preservation networks that automatically and continually audit and repair digital files (such as an OJS installation and all of its associated file). If authorized content at one institution’s LOCKSS box is corrupted or destroyed, repairs are served from other authorized LOCKSS boxes in the network.

PKP provides data to the Keepers Registry about the OJS journals preserved in the PKP Private LOCKSS Network. PKP participated in the workshop and is a signatory to this statement.

PKP PLN Institutions

LOCKSS, in its most robust implementation, depends on a network of institutions working together. There are several Private LOCKSS Networks around the world, including the PKP PLN. Node institutions participating in the PKP PLN include:

  • Ghent University Library
  • Indiana University
  • Italian National Library of Florence
  • Ontario Council of University Libraries (OCUL), Scholars Portal
  • Simon Fraser University
  • University of Alberta
  • University of British Columbia
  • University of Pittsburgh
  • University of Victoria


Why it Matters

Many digital objects, such as OJS journals, exist only on a single server, and if that server were to fail, that journal would be completely lost. Sometimes journals come to the end of their life, and in some cases, go off-line with no trace of the important work that past editors, reviewers, and authors had contributed. With LOCKSS, the single copy issue is solved, and if a journal’s files are corrupted, or if the journal losses its support, it will be available from the other participants in the network.

Additional Benefits

In addition to ensuring the preservation of your content, participating in the PKP PLN is one of the DOAJ’s recognized preservation systems and is considered a “best practice” in scholarly publishing. As well, participation in the PKP PLN will get your journal mentioned in the Keepers Registry, adding to your journal’s credibility and visibility.

PKP PLN Advisory Committee

The PKP PLN has depended upon the expert advice and guidance from its international advisory committee, and we thank them for their important work:

  • Lars Bjornshauge, Directory of Open Access Journals (DOAJ)
  • Sioux Cumming, International Network for the Availability of Scientific Publications (INASP)
  • Alan Darnell, Ontario Council of University Libraries (OCUL)
  • Geoff Harder, University of Alberta Libraries
  • Sarah Lippincott, Library Publishing Coalition (LPC)
  • Alex Mendonça, SciELO
  • Susan Murray, African Journals Online (AJOL)
  • Victoria Reich, LOCKSS Program, Stanford University Libraries
  • Heather Joseph, SPARC
  • Dwayne K. Buttler, J.D., University of Louisville

How to Enable LOCKSS in OJS

In order to participate in the PKP PLN, your journal must meet the following requirements:

  1. Be running OJS 2.4.8 or later
  2. Have an ISSN
  3. Have published at least one article

Once you have met these requirements, follow these steps:

  1. Login as the Journal Manager
  2. Go to System Plugins
  3. From there, go to Generic Plugins and find the PKP PLN Plugin
  4. Select Enable
  5. Next, select Settings and accept the Terms of Use
  6. Your content will be automatically included in the network. No further action is required.

We hope you will find this free service from PKP valuable for your publishing activities. If you haven’t signed up yet, do it soon — your journal isn’t safe until it is preserved!

If you have any questions, please let us know.

2 Comments on "PKP LOCKSS PLN Update"

  1. Claudia Holland says:


    I’m curious about the following statement in the LOCKSS- PLN Terms of Use OJS journal managers must agree to:

    7. I agree that the PKP-PLN reserves the right, not to preserve or make content accessible.

    Would you please explain why this is included in the TOU? Is this standard language for LOCKSS?


    • Kevin says:

      Hi Claudia,

      We included that term of use to cover any situation where we we felt restoring a journal would put the PLN members at unreasonable risk, for example if we had reason to believe that the person who accepted the terms didn’t have the legal authority to do so. We do not intend to capriciously exercise this right.

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