Merritt Digital Preservation Repository – June 2026

June 30, 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 June 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 Main collection
UC Berkeley Library EART collection
UC Berkeley Library Oral Histories
UC Berkeley Library APIS
UC Berkeley Library Bios
UC Berkeley Library Map Collection
UC Berkeley Library Humanities & Social Sciences
UC Irvine SCA Southeast Asian Archives
UC Riverside Library Nuxeo collection
UCSC Library Yamashita Family Papers MS411
UCSC Library Miriam C. and Raymond Rice Papers MS277

Digital Preservation Community

iPRES 2026 List of Accepted Submissions

The accepted list of all peer-reviewed submissions for this year’s iPRES conference is now available! Full papers, short papers, panels, posters and workshops are all listed here for review. Conference themes for iPRES 2026 is Copenhagen are Community, Preservation and Horizon. Over one hundred submissions were accepted and will be packed into the first four days of the week of September 21.

What We’re Working On

As noted in our recent updates, many Merritt microservices have now been containerized and are being orchestrated through use of Amazon Elastic Container Service (ECS) and AWS Fargate! During the month of June, the Replication and LDAP services were migrated, which leaves us with the most complex services remaining – namely the Ingest, Storage and ZooKeeper services. We’ll be working on Ingest and Storage during the month of July. Deployment to the Stage ECS environment will take place during the week of July 6, after which extensive testing and additional feature development will take place. Specifically we’ll be extending the Ingest service so it can authenticate to campus infrastructure according to campus library needs. ZooKeeper, which provides the basis for Merritt’s job and batch queueing functionality will be last. It will require persisting data on an EFS volume, akin to requirements addressed for LDAP.

Repository Metrics for June

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
Holdings as of June 30, 2026, fiscal year end:	643.2 TB (one copy)

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

eScholarship	15,383
UC Berkeley Library Main Collection	24,032
UC Berkeley Library EART Collection	3,376
UC Berkeley Library Bios	1,027
UC Berkeley Library Map Collection	4,085
University and Jepson Herbaria Image Archive	3,633
UCSC Library Donna Haraway Papers UA042	1,883
UCSC Library Miriam C. and Raymond Rice Papers MS277	496
UCSC Library Yamashita Family Papers MS411	198
UC Riverside Library Nuxeo Collection	6,546