Merritt Digital Preservation Repository – May 2026

May 29, 2026 Author: Eric LopatinCategories:

Merritt is a digital preservation repository from the University of California Curation Center (UC3) that enables the UC community to manage, archive, and share its valuable digital content.

Welcome to the Merritt service update for May 2026

Content and Collections

The following collections were actively being expanded during May:

University and Jepson Herbaria Image Archive
UC Berkeley Library Bancroft Collections
UC Berkeley Library Hearst
UC Berkeley Library Main collection
UC Irvine SCA Critical Theory Archives
UC Irvine SCA Orange County Regional History Collection
UC Riverside Library Nuxeo collection
UCSC Library Cabrillo Music Festival Collection
UCSC Library Merrill College Records UA104
UCSC Library Research Center for the Americas Records UA120
UCSC Library Donna Haraway Papers UA042
UCSC Library Shmuel Thaler Photographs MS210
UCSC Library Branson DeCou Archive MS38

Digital Preservation Community

New Michigan Digital Preservation Network (MDPN) LOCKSS Toolkit

MDPN shared its Statewide and Regional LOCKSS 2.0 Digital Preservation Network Implementation Toolkit with the digital preservation community. The Toolkit introduces “several reusable and adaptable resources across five focus areas – community formation, technical infrastructure, workflow development, governance, and outreach and training – that the MDPN and its members developed during the grant period.” It is intended to “help guide groups of collaborators seeking to build a new distributed digital preservation network or existing networks seeking guidance in one or more of the focus areas.”

What We’re Working On

Multiple Merritt microservices have now been containerized and are being orchestrated through use of Amazon Elastic Container Service (ECS)! These include the repository’s UI, Access, Audit and Inventory services. The Replication service will be next to migrate in June, and the primary Ingest and Storage services in July. Each Java service (all but the UI) needs to be able to shut down gracefully to allow for efficient autoscaling and the associated implementations are ongoing. They will allow ECS to increase and subsequently reduce the number of containers running a particular service without losing track of current operations and queue entries.

Repository Metrics for May

Holdings Snapshot

Holdings as of July 1, 2025, fiscal year start:	584.00 TB
Holdings as of January 29, 2026	604.2 TB
Holdings as of March 26, 2026	625.05 TB
Holdings as of April 29, 2026	627.2 TB
Holdings as of May 29, 2026	632.8 TB (one copy)

Active collections in May (new files added – a single digital object can contain one or more files):

eScholarship	15,903
UC Berkeley Library Main Collection	78,339
University and Jepson Herbaria Image Archive	2,164
UCSC Library Donna Haraway Papers UA042	1,883
UC Berkeley Library Hearst	807
UC Berkeley Library Bancroft Collections	1,112
UC Riverside Library Nuxeo collection	28,329