Immutable Snapshots on Buffalo TeraStations

With ransomware attacks becoming more sophisticated and data breaches becoming more common, IT leaders need to consider more sophisticated protection methods. Immutable storage offer organizations a vital defense against tampering, serving as a critical defense against evolving cyber threats, including ransomware, malware, and unauthorized modifications.

Buffalo TeraStation 5020 series and 71210RH series network storage offer the ability to create immutable snapshots both manually or on a schedule, as well as automatically creating immutable snapshots during backups, replication, and failover to add an extra layer of protection. For more information on configuring immutable snapshots on Buffalo TeraStations, click here.

1. What Is Immutable Storage?
2. How Does Immutable Storage Work on Buffalo TeraStations?
3. What Is the Significance of the Protection Period?
4. How Does Immutable Storage Strengthen Data Protection?
5. How Does Immutable Storage Impact Regulatory Compliance?
6. What if my question isn't answered here?

What Is Immutable Storage?

Immutable storage generally refers to data storage that cannot be modified or deleted. Built on the Write Once, Read Many (WORM) model, immutable storage allows data to be accessed repeatedly after creation while preventing both accidental and intentional modifications, ensuring long-term protection and reliability.

How Does Immutable Storage Work on Buffalo TeraStations?

The Buffalo TeraStation 5020 and 71210RH Series NAS offer the ability to create immutable snapshots either on the fly or at scheduled intervals, as well as create immutable snapshots as part of data transfer processes such as data backup, replication, and failover. Immutable snapshots cannot be modified or deleted as long as the protection period is active, and are compatible with all storage protocols. 

What Is the Significance of the Protection Period?

Immutable snapshots on the Buffalo TeraStation operate on time-based retention, allowing you to define a protection period during which snapshots remain immutable.

Why is time-based retention important? If the immutability period is set too long and hard drive space runs out, you could be stuck with a partially or entirely unusable system. In a disaster scenario, such as a ransomware attack, the most valuable backup is typically the most recent, unaffected version—often within the last one to two weeks. Older backups are less frequently restored, except for individual files or folders. However, in ransomware recovery, entire shares—or even all shares—are more likely to require restoration.

Choosing an excessively long retention period can make a system impractical to manage, so balancing protection with storage capacity is essential.

How Does Immutable Storage Strengthen Data Protection?

Protecting Against Ransomware
First and foremost, immutable storage can greatly mitigate ransomware and malware threats. Modern ransomware frequently targets both stored data and backup systems. Immutable storage enables secure and unalterable backup, allowing you to quickly access untampered data for seamless recovery in the event of an attack.

Strengthening Compliance and Audit Readiness
Industries like healthcare and finance must adhere to strict data protection and audit requirements. Immutable storage helps organizations meet these standards by maintaining an unalterable record of data, ensuring compliance while offering a transparent and verifiable audit trail.

Reliable Data Recovery
Immutable snapshots serve as a trusted recovery point, restoring systems to a known, uncorrupted state after disruptions. Whether caused by accidental deletion, corruption, or cyber threats, these snapshots provide a dependable solution for minimizing downtime and data loss.

How Does Immutable Storage Impact Regulatory Compliance?

Industries like finance, healthcare, and legal services must adhere to strict regulations that mandate data integrity, security, and retention. Immutable storage provides a powerful solution by ensuring data remains unaltered and tamper-proof. With write-once-read-many (WORM) capabilities, organizations can securely store records, preventing unauthorized modifications or deletions—an essential safeguard for meeting compliance standards like HIPAA, GDPR, SEC Rule 17a-4, and FINRA. In fact, any compliance verbiage that mentions terms such as "WORM", "infallible", "immutable", or "unalterable" would fall under coverage.

Don't Just Store Your Data—Secure It

For more information on how Buffalo TeraStation NAS with immutable storage can add significant security to your data storage, please contact us.