Preserving old data, especially digital, is an important endeavor to ensure information, insights, and records from the past remain accessible to future generations. The process of long-term preservation necessitates careful planning, the understanding and utilization of best practices, and ongoing maintenance and management. This painstaking task also requires proactive measures to protect the data from being compromised by evolving technology, physical conditions, or inadvertent human errors.
To successfully undertake long-term preservation of old data, follow these helpful tips:
1. Take Stock of Your Data
Identifying what data you have and its importance is the first and foremost step in long-term preservation. Comprehensively catalog your data and evaluate its relevance to your organization’s mission, future objectives, and compliance requirements. Additionally, understand your data’s format (analog or digital), its age, and the technology employed at the time of its creation.
2. Standardize Data Formats
Lucid understanding of your data’s format makes it easier to decide which method to use for its preservation. Transition your data into standardized formats for better longevity. For instance, convert your documents to plain text or PDF/A, migrate images to TIFF or JPEG2000, and transform audio-visual material into MP3 or MPEG-4. These are universally recognized formats, ensuring higher compatibility for future technological advancements.
3. Practice Data Redundancy
Creating multiple copies of your data and storing them in various geographic locations is crucial to preserving your data for the long term. This practice, known as data redundancy, protects your data from disasters like fires, floods, or even technical failures. Organizations often use the 3-2-1 rule, which recommends keeping three copies of your data, in two different formats, and one copy located offsite.
4. Utilize Trusted Digital Repositories
Trusted digital repositories can be a game-changer in long-term data preservation. These are professional services that use state-of-the-art technology to store, back up, and safeguard your data. Ensuring that the repository meets recognized standards, like the ISO 16363 (for trustworthy digital repositories) or the Data Seal of Approval, is crucial.
5. Implement Metadata Standards
Metadata, or data about data, makes your records easily searchable and navigable. Implementing metadata standards help to describe, manage, and give access to the preserved data effectively. Key metadata standards to consider include Dublin Core, PREMIS for preservation metadata, or METS for encoding an archival finding aid.
6. Employ Persistent Identifiers
Persistent identifiers are long-lasting references to digital objects. They tackle the challenge of link rot, ensuring that people can always locate your stored data, even if it has been moved or renamed. Common persistent identifiers include URLs or DOIs (digital object identifiers), which remain consistent and reliable over time.
7. Regularly Update Your Storage Media
Storage media, such as CDs, hard drives, or tape drives, degrade over time. The life expectancy of most commercial media is around 5-10 years, necessitating consistent updates every few years. Regularly moving your data to new storage media, a process called data migration, ensures its readability and accessibility.
8. Focus on Accessibility and Usability
Preserving data is of no use if it’s not easily and readily accessible. Prioritize the usability and accessibility of your data interface. This includes ensuring your data is searchable, easily navigable, and supported with comprehensive user guides or FAQs.
9. Foster Data Security
Keeping your data safe from breaches, hacks, or viruses is paramount. Implement strong firewalls, use encryption for sensitive data, and regularly update your systems and software to ensure top-level security. Regular audits by cybersecurity professionals can also be beneficial here.
10. Prepare a Data Preservation Policy
Finally, preparing a robust data preservation policy ensures your organization’s strategic commitment to the preservation process. This policy should outline the types of data to save, the formats to use, the backup procedures, retention periods, access procedures, and roles and responsibilities within the organization.
To summarize, long-term preservation of old data is a necessary undertaking that requires planning, time, and resources. By adopting practices such as standardizing data formats, practicing data redundancy, employing trusted repositories, and focusing on accessibility and security, organizations can ensure their treasure trove of data remains accessible and usable for generations to come.
