Repository

From the large repository list at re3data.org we have investigated the following repositories

Global repositories
Danish repositories
- KB (based on Dataverse)
- Dansk Data Arkiver

Evaluation Grid

Green - The system fulfills this requirement
Yellow - The system partially fulfills this requirement
Pink - The system does not fulfills this requirement

Category I	Category II	Zenodo	figshare	Dataverse	KB	Dansk Data Arkiv
Price	Initial subscription price	0	0	0	0
	Free storage size limit	No limits	1GB	No limits	10GB
	Price per GB above this limit	0	Not allowed for non-paying customers	0	10kr
	Price per year	0	Different pricemodels (see figshare pricing)	0	GB/yearly 5kr
Size limit	Default uploaded file size limit	2GB	250MB End of 2015 5GB	10GB	10GB
	File size limit on request	10GB (in November) 1TB	250MB End of 2015 5GB	10GB	10GB
	Number of files that can be stored	No limits	1GB limit End of 2015 20GB	1TB limit	No limits
	Total allowed storage capacity	No limits	No limits public 1GB private End of 2015 20GB	1TB	No limits
Data types	Allowed	All formats are allowed - even preservation unfriendly.	All formats are allowed	All. SPSS-filer format are, though, changed from SAW/POR to TAB.	All. SPSS-filer format are, though, changed from SAW/POR to TAB.
Research restrictions	Allowed researchers	All researchers.	All researchers	All researchers	All Danish researchers	Danish researchers
	Material not allowed	Illegal material..Illegal storage of copyrighted material will also not be allowed.		Privacy-sensitive material		Material that are not important for the Danish society
Research	Phase	Any document/dataset from any phase of the research lifecycle. Because each dataset gets a DOI and is difficult to remove, the managing active data phase is sort of tedious to use.	All phases	All phases	All phases Both the managing active data phase and the data repositories phase have focus, but the recommended preservation time period is 5-10 years	Long-time preservation
	Disciplinary	All disciplines are accepted	All disciplines are accepted		?
Access to data	Open data	Yes	Yes	Yes	Yes
	Embargoed data	Yes	Yes (end of 2015)	Yes	Yes
	Closed data	Yes	Yes	Yes	Yes
	Tracking users and statistics	Zenodo does not track, collect or retain personal information			?
	Restricted Access	Users may deposit restricted files with the ability to share access with others if certain requirements are met.		Metadata can always be seen by anybody, but users may restrict access to the actual data.	Metadata can always be seen by anybody, but users may restrict access to the actual data.
Data security	Multiple redundant copies	Yes	Yes	Yes
	How protected are the data?	Zenodo will take all reasonable measures to protect the privacy of its users and to resist service interruptions, intentional attacks, or other events that may compromise the security of the Zenodo website.
Location		Europe			Denmark	Denmark
Accept material from		International researchers			Danish researchers	Danish researchers
Ownership		All uploaded content remains the property of the parties prior to submission	All uploaded content remains the property of the parties prior to submission	it offers distributed ownership for data authors through virtual web archives named "dataverses."	it offers distributed ownership for data authors through virtual web archives named "dataverses."
Ability to have versions		Data files are versioned. Records are not versioned. Records can be retracted from public view; however, the data files and record are preserved.	Yes - in end of 2015	Yes	?
Safety		Data files are kept in multiple replicas in a distributed file system, which is backed up to tape on a nightly basis.	Data files are kept in the Amazon data network storage
Sustainability	What is the plan in case the service gets terminated?	If terminated researchers are advised where they can store their research best	No plan	No plan	?
	What funding is there	Funded by EU	None			Funded by Danish State
	How high is the risk of the service getting terminated	No risk	Low risk	Low risk	High risk not enough people use the repository	No risk
Data	Withdrawal	If the uploaded research object must later be withdrawn, the reason for the withdrawal will be indicated on a tombstone page, which will henceforth be served in its place. Withdrawal is considered an exceptional action, which normally should be requested and fully justified by the original uploader. In any other circumstance reasonable attempts will be made to contact the original uploader to obtain consent. The DOI and the URL of the original object are retained.	Easy to delete a private file, but almost impossible to delete a published file		?
	Revocation of DOIs	Content not considered to fall under the scope of the repository will be removed and associated DOIs issued by Zenodo revoked. User access may be revoked on violation of Terms of Use.			?
	Encryption	No	Yes	Yes	Yes
	Virus check	No
	Storage of sensitive data	In so far that the data can be closed for access data are secure, so for instance social security numbers cannot be read by everyone	Launched in November 2015 Confidential files – Enables new collaboration opportunities by releasing a metadata-only record for files which are commercially or personally sensitive	Data can be selected to be viewable to only a number of people, so data are secure	Data can be selected to be viewable to only a number of people, so data are secure
Policy/law	Access	Open for all, but users must specify a license for all publicly available files. Licenses for closed access files may be specified in the description field.			Open for danish researcher	Open for danish researcher
	Mandate	Government	Commercial	Institutional	Institutional	Government
Preservation	Retention period	Items will be retained for at least 20 years	Minimum of 10 years.		5-10 years if enough researchers use it
	Functional preservation	Zenodo makes no promises of usability and understandability of deposited objects over time.	Planning to allow data consumers to download the files in original formats
	File preservation	Data files and metadata are backed up nightly and replicated into multiple copies in the online system.	Data files and metadata are backed up nightly and replicated into multiple copies in the online system.
	Fixity and authenticity	All data files are stored along with a MD5 checksum of the file content.	All data files are stored along with a MD5 checksum of the file content.
	Logical preservation	No	No	No	No
	Curation	Yes	No	No	?
Metadata	Access and reuse	All metadata is exported via OAI-PMH and can be harvested. All metadata is stored internally in MARC according to the schema defined in Zenodo metadata. Metadata is exported in several standard formats such as MARCXML, Dublin Core, and DataCite Metadata Schema according to OpenAIRE Guidelines.			Each dataset gets a DOI that ensures future harvesting
	License	Metadata is licensed under CC0, except for email addresses.

Digital preservation requirement
M – must S – should C – could
INGEST	Requirement
S	The digital archive will enable us to store administrative information relating to the Submission Information Package (SIP) (information and correspondence relating to receipt of the SIP).	The uploaded data is archived as a Submission Information Package	None
S	The digital archive will include a means for recording appraisal decisions relating to the Submission Information Package and individual elements within it.	Yes
M	The digital archive will be able to identify and characterise data objects (where appropriate tools exist).	DOI	DOI	DOI	DOI
S	The digital archive will be able to validate files (where appropriate tools exist).	All data files are stored along with a MD5 checksum of the file content
S	The digital archive will support automated extraction of metadata from files.	Upcoming feature: Metadata extraction
S	The digital archive will virus check files on ingest.	No
C	The digital archive will be able to record the presence and location of related physical material.
S	It will be possible to select and configure the required level of automation within the ingest workflow.
M	The digital archive will be able to process large numbers of files and files that are large in size.	Large number of files that each are max. 10GB (soon to be 1TB)			Large number of files that each are max. 2GB
DATA MANAGEMENT
M	The digital archive will generate persistent, unique internal identifiers.	DOI	DOI	DOI	DOI
M	The digital archive will ensure that Preservation Description Information (PDI) is persistently associated with the relevant content information. The relationship between a file and its metadata/documentation must be permanent.	No
M	The digital archive will support the PREMIS metadata schema and use it to store preservation metadata.	No
S	The digital archive will enable us to describe data at different levels of granularity – for example metadata may be attached to a collection, a group of files or an individual file.		Yes - in end of 2015
M	The digital archive will accurately record and maintain relationships between different representations of a file (for example, from submitted originals to dissemination and preservation versions that will be created over time).
M	The digital archive will store technical metadata extracted from files (for example that which is created as part of the ingest process).
M	The digital archive will fulfill Dublin Core metadata	Yes
M	The digital archive will guarantee long-term preservation and integrity of the data	Yes
M	The digital archive will be certified to the Trusted Repositories Audit and Certification standard	Will be in 2016
M	The digital archive will have access controls that can be used to restrict access to sensitive data if this is necessary	Yes
PRESERVATION PLANNING
M	The digital archive will allow preservation plans (such as file migration/normalisation) to be enacted on individual or groups of files.
C	Automated checking of significant properties of files will be carried out post-migration to ensure these properties are adequately preserved (where appropriate tools exist).
M	The digital archive will record actions, migrations and administrative processes that occur whilst the digital objects are contained within the digital archive.
ADMINISTRATION
M	The digital archive will allow for disposal of data where appropriate.
S	A record must be kept of data disposal including what was disposed of, when it was disposed of and reasons for disposal.
S	The digital archive will have reporting capabilities so statistics can be collated. For example it would be useful to be able to report on numbers of files, types of files, size of files, preservation actions carried out.
ARCHIVAL STORAGE
M	The digital archive will actively monitor the integrity of digital objects on a regular and automated schedule with the use of checksums.	Yes
M	Where problems of data loss or corruption occur, The digital archive will have a reporting/notification system to prompt appropriate action.	Yes
S	The digital archive will be able to connect to, and support a range of storage systems
GENERAL
S	The digital archive will be compliant with the Open Archival Information System (OAIS) reference model.	No	No	Yes
M	The digital archive will integrate with a range of repository or content management systems
S	The digital archive will integrate with our archival management systems.
S	The digital archive will have APIs or other services for integrating with other systems.	Yes	Yes	Yes	Yes
S	The digital archive will be able to incorporate new digital preservation tools (for migration, file validation, characterisation etc) as they become available.	No	No	No	No
M	The digital archive will include functionality for extracting and exporting the data and associated metadata in standards compliant formats.
S	The software or system chosen for the digital archive will be supported and technical help should be available.
S	The software or system chosen for the digital archive will be under active development.	Yes	Yes	Yes
S	A community of users will exist around the software or system to enable sharing of use cases, workflows and to promote developments in line with changes and innovations in the discipline of digital preservation.	No	No	Yes

1 http://digital-archiving.blogspot.co.uk/2013/12/my-digital-preservation-christmas-wish.html

2 http://public.ccsds.org/publications/archive/650x0m2.pdf

Links

The data archive in UK's FAQ, which asks and answers some interesting questions.

Similar question and recommendation: Where to archive and Choose Data Archive

A large register of different repository possibilities: Registry of Research Data Repositories

RDM Repository Evaluation

Category

Evaluation Grid

Data

Withdrawal

Revocation of DOIs

Digital preservation requirement

Links