The Resurgence of Tape-Based Backup in Modern Data Protection Strategies
The importance of data backup has been understood for decades, dating back to the early days of computing. Despite the evolution of technology, the oldest method of data backup—tape—remains relevant and even valued in contemporary data management discussions.
Over the last ten years, the utilization of tape for data storage had declined significantly as organizations favored cloud storage solutions due to several enticing benefits. The cloud offered not only comparable costs but also remarkable scalability and rapid data retrieval. However, as cyber threats have become increasingly sophisticated, organizations are once again looking into tape-based backups. This shift aligns with a broader change in strategies from the traditional 3-2-1 backup rule to a more nuanced approach—known as the 3-2-1-1-0 rule. This upgraded backup strategy includes the vital component of offline, verified restore points, a feature that has gained traction under pressure from regulatory bodies and cyber-insurance providers urging businesses to enhance their data protection measures.
Tape-Based Backup’s Road to a Comeback
Experts note that the reliability of even the most advanced hardware and software systems can falter; hence, data backup methods must be resilient. Many alternatives to tape storage have emerged over the years, but as Kevin Ripa, a senior instructor at the SANS Institute, points out, many organizations have historically depended on tape for its economical and high-capacity retention. Reflecting on this trend, Chasserae Coyne, a member of ISACA’s Emerging Trends Working Group, emphasizes that tape was historically the cornerstone for data recording and storage on a large scale.
The emergence of low-cost disk storage and the widespread adoption of public cloud solutions had initially moved many organizations away from tape. According to Harshad Sadashiv Kadam, also affiliated with ISACA, companies began to rely on cloud services not only for daily operations but also for backup storage. The availability and perceived advantages of cloud solutions oversaw the orchestration of a paradigm shift in enterprise backup architectures.
Contrary to its declining popularity, tape never fully disappeared from the landscape and has seen a recent resurgence. The general consensus, reflected by various research firms, indicates that the market size for tape storage is growing. For instance, The Business Research Company estimates the storage market will reach $6.27 billion by 2025 and grow to approximately $11.18 billion by 2030, achieving a compound annual growth rate of 12.3%.
Motivations Behind the Renewal of Tape Storage
The revived interest in tape storage can be attributed to two primary factors.
1. The Limitations of Always-On Storage:
Risk management leaders are increasingly aware of the downsides associated with online storage, whether accessed via cloud or on-premises systems. According to Coyne, a significant vulnerability arises from cyberattacks which can potentially corrupt enterprise systems and the data housed within them. Ripa aptly illustrates this concern, stating that many organizations once viewed cloud storage as a secure backup solution—only to face the harsh reality when their systems fell prey to ransomware attacks. Additionally, escalating costs associated with cloud storage are prompting organizations to pivot back to tape solutions for specific backup and archiving needs.
2. Heightened Standards Imposed by Regulators and Insurers:
Coyne points out that evolving regulations and standards regarding data protection stress the importance of immutable records and separate backups. These requirements are inherently fulfilled by offline retention, driving renewed corporate interest in tape. Furthermore, cyber insurance providers are increasingly mandating proof of offline or immutable backups, offering more favorable terms to companies that comply with such robust data protection measures.
How Tape Storage Compares to SSDs and HDDs
Tape storage integrates seamlessly into broader data protection and risk management frameworks, essential for organizational resilience. Its ability to be stored offline offers an added layer of security, known as air-gapped protection—critical for organizations that wish to shield their data from potential cyber threats. When coupled with WORM (Write Once Read Many) media and stringent control processes, tape ensures immutability and long-term retention to meet compliance standards and provide archival governance.
Philipp Jung, a senior partner at Kearney, highlights several advantages of tape storage compared to Solid State Drives (SSDs) and Hard Disk Drives (HDDs):
- Higher reliability in cold storage scenarios without concerns of mechanical failure.
- Enhanced durability with a substantial shelf life of over 20 to 30 years, outmatching disk storage, which typically lasts between three to ten years.
- Superior scalability, accommodating petabytes and beyond—while HDDs are limited by rack, power, and cooling constraints, SSDs become economically unfeasible at a larger scale.
- Zero power consumption when in a dormant state.
- Elevated security when offline, as HDDs and SSDs remain vulnerable when connected to the network.
- Lower costs per terabyte, making tape an economically viable option.
It is essential to note that tape storage is meant to complement rather than replace other backup methods within a comprehensive data strategy. Many organizations, leveraging the 3-2-1-1-0 approach, advocate for storing data across at least two different types of media, with one stored offline to enhance air-gapped protection. Tape serves distinct purposes, especially in long-term archiving and compliance contexts.
In conclusion, while tape storage might seem like a relic of the past, its renewed significance highlights the ever-evolving landscape of data protection. Companies are once again turning to this traditional method to enhance their cybersecurity posture and comply with regulatory demands, ensuring that their data remains safe and accessible.