Portico is committed to the

preservation of scholarly literature

published in electronic form to

ensure that these materials remain

accessible to future generations of

scholars, researchers, and students.

PORTICO’S SERVICES

E-JOURNALPRESERVATION

SERVICE

E-BOOKPRESERVATION

SERVICE

D-COLLECTIONPRESERVATION

SERVICE

PUBLISHER & LIBRARY FEES

PUBLISHER FEES, NO LIBRARY FEE

NATIONALLIBRARY SERVICE

LIBRARY FEES, NO PUBLISHER FEE

WHAT WE DOPortico is a digital preservation service for e-journals, e-books, and other electronic content

Started by JSTOR in 2005 with funding from the Library of Congress and the Andrew Mellon Foundation.

Based on collaboration between libraries and publishers.

How It WorksWe maintain archiving agreements with publishers to collect and preserve content.

We receive content directly from the publishers. This content is held in a “dark archive”: it is stored until a specific event occurs that causes content to become accessible.

We make content available under certain circumstances:

Libraries don’t have to worry about whether their content exists for future generations.

• Publisher ceases operation• Publisher discontinues a title• Publisher drops a back file

TRIGGERS

Publishers can opt in to Portico’s post-cancellation access service.

• customers can request access to previously subscribed to/purchased material via Portico

• must be Portico participant in addition to publisher customer

PERPETUAL/POST-CANCELLATION ACCESS

Portico is a centralized and replicated repository that uses migration as its primary long-term archival approach, as part of a managed preservation strategy.

HOW DOES IT WORK

Portico provides preservation at the far end of the scale.We manage the content in our care very closely. The primary preservation methodology is migration—transitioning content from one file format to another as technology evolves.

NO ACTION BACKUP BYTEREPLICATION

FULL MANAGEDPRESERVATION

CONTENT MANAGEMENT ACTIVITIES

Usability

• the intellectual content of the item must remain usable via the delivery mechanism of current technology

Authenticity

• the provenance of the content must be proven and the content an authentic replica of the original

Discoverability

• the content must have logical bibliographic metadata so that it can be found by end users through time

Accessibility

• the content must be available for use to the appropriate community

Digital preservation is the series of management policies and activities necessary to ensure the enduring usability, authenticity, discoverability, and accessibility of content over the very long-term. The key goals of digital preservation include:

WHAT WE DOUnderstand and repackage content into our content model specific to the genre

Complete an initial metadata migration

Provide managed preservation

• replication

• fixity checks

• repair and replace content as needed

• refresh hardware

• migrate files to new format

Regular activities:

• Replicate archive• Perform fixity checks • Repair or replace content if it becomes

corrupted• Audit content• Report on the content to participants• Refresh hardware• Monitor the preservation and

academic community for changes in preservation needs

Annual or as needed activities:

• Validate or revalidate files as new tools are developed

• Migrate files to new formats as necessitated by the changing technological environment

• Update preservation plans• Receive preservation accreditation

OUR REPLICATION STRATEGYPortico’s makes both offline and online replicas of archive objects and their metadata and distributes them around the world.

ON-LINE MASTER – UNITED STATES, EAST COAST

ON-LINE REPLICALOCALLY MANAGED. UNITED

STATES, MIDWEST

ON-LINE REPLICAU.S. COMMERCIAL CLOUD

STORAGE

OFF-LINE REPLICA AT THE NATIONAL LIBRARY OF THE

NETHERLANDS (KB)

Content arrives at Portico

via DVD, hard drive, FTP, RSS

feed, etc. Files are off loaded

Files are processed

through the Portico workflow

and publisher specific tools.

Portico archival units are created.

Portico archival units are

preserved in the

Portico archive..

End users access content.

Archival units are replicated to two

locations in the U.S. and one location in

Europe.

When content is triggered or a PCA claim fulfilled the

content delivery is enabled.

49

United Kingdom of Great Britain and Northern Ireland

387

United States of America

7

New Zealand

58

Argentina

1Lebanon

25Australia

3Sweden

23Canada

169Brazil

3India

We have participants from small colleges to large research institutions—more than 900 libraries in 21 countries.

GLOBAL LIBRARY PARTICIPATION

2

United Arab Emirates

55

United Kingdom

1

New Zealand

210

United States

3

South Africa

1

Hong Kong

4

Singapore

4

Colombia

1

Argentina

14

Australia

1

Sweden19

Canada

2

Mexico1

Nigeria

1

Russia

2

Brazil

We have participants from small publishers to very large publishers—more than 400 publishers in 49 countries.

GLOBAL PUBLISHER PARTICIPATION

EJOURNAL GROWTH IN ARTICLES

0M 5M 10M 15M 20M 25M 30M 35M 40M 45M 50M 55M 60M 65M 70M 75M

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

15,509,065

53,351,065

17,709,028

22,020,508

36,349,048

14,540,713

28,228,653

61,175,927

8,492,778

4,794,891

160,598

415 Publishers from 49 countries

971 Libraries from 21 countries

26,241 E-journals committed

23,434 E-journals preserved

752,694 E-books committed

474,629 E-books preserved

156 D-collections committed

137 D-collections preserved

61,175,927 E-journals articles preserved

382,576 E-books preserved

894,993 Digitized books preserved

1,253,281 Digitized documents preserved

1636803 Digitized newspaper issues preserved

1,237,626,247 Preserved Files

756,557,484 Preserved Images

162,612,149 Preserved Repository created archival files

251,611,386 Preserved Supplied text files

25,615,391 Preserved Application Specific Files

4,858,679 Preserved Multi-file Packages

104,667 Preserved Video Files

2,653 Preserved Audio Files

60 Preserved Executable Files

20 Triggered journal titles 3 Triggered OA journal titles1 Triggered book title

1st digital preservation service to become certified as a Trusted Digital Repository