In the modern digital age, data is being created at an exponential rate. From our smartphones to fitness trackers to social media, humans are generating massive amounts of data on a daily basis. In fact, it’s estimated that 2.5 quintillion bytes of data are created each day. That’s an unfathomable amount of data being produced across the globe. With tech giants like Google, Facebook, and Amazon vacuuming up our personal information, many wonder what happens to all of this data. Does it just disappear into the ether once it’s served its purpose? Or does it continue to exist in some form?
The lifecycle of tech data
When we think of data being “deleted,” it gives the impression that the information completely vanishes. But in reality, data tends to go through a lifecycle rather than being instantly purged. When you delete a file on your computer, for example, it isn’t necessarily erased right away. The physical space where the data resides is simply marked as available for something new to overwrite it. Until that overwrite happens, traces of the “deleted” data may still exist. This is why forensic experts are sometimes able to recover files, even after a user has deleted them.
On the internet, there are additional complexities around data deletion. When you remove content from a website or social media platform, it isn’t necessarily scrubbed from their servers instantly. There is usually a delay before it is fully removed from live databases. Copies may also exist in backups and archives. Europe’s “right to be forgotten” law places more stringent requirements on organizations to remove data about individuals, upon request. But this process is still imperfect.
With modern machine learning techniques, companies are able to glean insights and generate new data from existing information. For example, an algorithm can analyze millions of images to learn how to recognize objects or faces. Even if the original images are deleted, the knowledge gained from that data still resides in the algorithm’s neural network. The origins may become obscured over time, but fragments of the data survive in new forms.
Data persistence in the cloud
The rise of cloud computing has dramatically increased the persistence of data. When information is stored on decentralized networks of servers, it becomes much harder to permanently erase. Hyperscale cloud providers like Amazon AWS, Microsoft Azure, and Google Cloud Platform have data centers all over the world. A file uploaded to one of these services could have hundreds of copies distributed across multiple physical locations and facilities. Even if you delete the file from your personal account, many remnants are likely to remain in the cloud provider’s infrastructure.
Some countries have laws requiring local storage of citizens’ data. In such cases, cloud services must retain replicated copies within geographic boundaries. While beneficial for data sovereignty, this practice also contributes to broader persistence of information. Moving data across international networks becomes more complex due to regulations. So pieces tend to linger rather than being quickly purged.
Challenges in managing endless data
The indefinite persistence of data poses risks in terms of privacy, security, and compliance. Personally identifiable information that is improperly secured can be exploited by malicious actors. Maintaining data stores also incurs significant storage costs for organizations. As the data piles up, it becomes unmanageable and difficult to analyze. Much of it goes unused after a certain period of time.
Various data lifecycle management strategies have emerged to combat these issues. Setting policies to automatically delete data after it reaches a certain age is a common technique. For example, a company may erase files older than 2 years to limit their data hoarding. Transferring aged data to cheaper storage tiers or offline backups can reduce costs while still retaining information.
Implementing access controls, encryption, and data masking helps mitigate privacy and security risks of data persistence. These measures make sensitive information less valuable if improperly accessed. Compliance requirements may dictate minimum retention periods before allowing deletion. But overall, a controlled lifecycle helps limit risks.
The role of data archives
While much data can be automatically deleted per defined policies, important information still needs to be preserved in long-term archives. This data persistence allows future access and analysis. Historical records, medical imaging data, and scientific research all require long-term retention. Storing this data in secure, offline systems allows it to exist indefinitely without posing excessive risk.
Magnetic tape is still a popular medium for archives due to its stability and low cost. Tape cartridges can store tremendous amounts of data efficiently. AWS Glacier and other cloud services offer tape-based archival storage options. While accessing tape-based data is slow, the goal is simply safe retention rather than quick retrieval.
Proper archiving preserves important data while keeping it segregated from more dynamic systems. This balances persistent retention with managing live production environments. Automated policies reduce data bloat in active usage while still allowing access to historical records.
The future of managing endless data
Looking ahead, expect continued exponential growth in data generation across our hyperconnected world. The Internet of Things (IoT) will contribute massive troves of streaming telemetry from billions of sensors and smart devices. Media consumption and social sharing show no signs of slowing down either. Simply storing all this data indefinitely is not feasible or advisable. We must become more prudent about what we retain versus delete.
Automation and machine learning will play a bigger role in managing data lifecycles. Unsupervised algorithms can identify redundant, obsolete, and trivial (ROT) data for removal. Analyzing usage patterns and data relationships allows systems to intelligently expire the right information. Granular data classification also enables nuanced policies beyond just age.
Serverless computing and pay-per-use models will reduce overhead of maintaining unused data stores long-term. You only pay for what you actually need. Transferring cooler data to cheaper tiers will become automated. And innovations in data storage like DNA and molecular storage open up almost unlimited capacity for critical archives in the future.
Compliance and regulations will also evolve around responsible data retention as volumes explode. Concepts like privacy budgets propose quantifying harm based on the sensitivity and amount of data held. New frameworks will likely emerge to guide principles and best practices.
Lastly, expect a shift from bulk data persistence toward more curated, high-value data. The ability to capture everything doesn’t mean we actually should. Filters and condensed embeddings that contain vital knowledge are often more useful. Precision will become more important than volume.
Conclusion
While deleting data gives the illusion that it disappears completely, the complexities of modern technology allow information to persist indefinitely in various forms. Copies and backups are distributed across networks and geographic regions. Machine learning models indefinitely hold knowledge gleaned from training data. And tape archives can retain exabytes of information for decades.
This endless persistence enables powerful digital experiences but also poses risks around privacy, security, and storage costs. Responsible data lifecycle management through techniques like expiration policies, encryption, and archiving help balance these trade offs. Automation and innovation will allow us to harness the value of data while judiciously deleting what no longer serves value.
Our insatiable appetite for digital information won’t slow down anytime soon. Adopting more mindful practices around data retention – keeping what matters, deleting what doesn’t – helps ensure we don’t end up permanently drowning under a deluge of useless data.
Year | Data Created (Zettabytes) |
---|---|
2010 | 1.2 |
2011 | 1.8 |
2012 | 2.6 |
2013 | 4.0 |
2014 | 4.4 |
2015 | 8.0 |
2016 | 16.1 |
2017 | 25.2 |
2018 | 33.2 |
2019 | 40.0 |
2020 | 59.0 |
2021 | 79.4 |
2022 | 94.7 |