Backup Under the Sign of Sustainable Development

Backup and DR solutions are generally not associated with sustainable development. However, in the changing landscape of data protection, “green skills” that combine technological awareness with technical knowledge will become increasingly important.

The price of the solution, functionality, efficiency (measured by RTO and RPO indicators), functionality or relations with suppliers are the most common factors that determine the choice of a backup tool. So far, a small group of customers attach importance to energy efficiency, although creating backups and disaster recovery processes can have an impact on electricity bills. It is not excluded that with rising energy prices, as well as new directives such as the CSRD (Corporate Sustainability Reporting Directive), entrepreneurs will start to pay more attention to this factor.

According to Moor Insights & Strategy, by 2025 data centers will consume over 3% of electricity. On the other hand, storage accounts for 30% of the total energy consumption of data centers. This coefficient is likely to increase. Managing and storing constantly growing data and the associated processes of starting storage systems, migrating resources, creating backups, replicating or ensuring a safe and functional environment require more and more electricity.

IT departments are under constant pressure from management, employees, and consumers who are making increasing demands on system performance, their security, and cost reduction. As if that weren’t enough, in the coming years there will be another challenge. Under the CSRD (Corporate Sustainability Reporting Directive), around 50,000 European companies will be obliged to report on sustainable development. This will also indirectly affect the functioning of IT units. Sustainable development in the case of IT is not only about using less energy, especially when it comes to its use in server rooms, but also about designing a more thoughtful infrastructure and rational data management.

Less data, less energy

A lot of unnecessary data lies on the disks of computers or smartphones – old photos, paid bills, never used recipes or emails from a few years ago. The same is true for corporate resources. On NAS servers, there is a lot of completely useless data that is often replicated. While for consumers, the mess on disks does not have a major impact on the household budget, for business users it can lead to a significant increase in costs. Organizations that want more sustainable data storage must be aware that there are costs associated with this, and the transition to new systems and operations can be difficult. However, with careful planning, some of the obstacles can be avoided or at least mitigated.

Energy-intensive tasks such as storage and backup significantly increase energy consumption, but the value of this data – especially in the case of older or “dark” data – can be negligible. They also have a negative impact on the natural environment. A classic example is video files. It is estimated that they are responsible for 70% of CO2 emissions generated by data centers. It often happens that a large broadcaster stores over a hundred versions of the same episode of a series on its servers, although it would be enough to limit this number to a dozen or so. Meanwhile, long-available deduplication and compression techniques help to clean up the server room of unnecessary data. These methods eliminate redundant or duplicate data, reducing storage requirements and increasing overall system performance. Minimizing the data footprint saves costs, shortens backup and recovery times, and reduces energy consumption. Everything indicates that deduplication and compression technologies will likely play a significant role in sustainable digital information storage practices.

However, in order to see irregularities and then put things in order, you need to have insight into data and storage environments. With greater visibility, organizations can make informed decisions about deleting or archiving unnecessary data, archiving it to the cloud or to tape. Pure Storage introduced a sustainability assessment function to its offer less than two years ago, which controls the level of energy consumption and carbon dioxide emissions by the disk array, and then recommends how to reduce both coefficients.

It is worth noting, however, that according to IDC, about 90% of carriers in data centers are hard drives. Their manufacturers also have their own arguments for energy efficiency and sustainable development. For example, specialists from Western Digital recommend that in the case of HDDs, the entire life cycle of the carrier should be assessed. Although from the point of view of I/O, flash memory is more energy-efficient than mechanical disks, although much more energy is needed to produce SSDs than in the case of HDDs. In addition, interesting solutions are appearing on the market that allow you to limit the energy consumption of mechanical disks. One such example is a product offered by the Estonian startup Leila Storage.

While some manufacturers, such as Pure Storage, are announcing the imminent end of mechanical disks. that even by 2026. However, this is an unlikely scenario. Leil Storage is trying to prove that HDD users can also save a lot of energy and reduce carbon dioxide emissions into the atmosphere.

Collaboration Between Storware and Leil Storage

According to the Estonian startup, companies often make the mistake of assuming that erasure coding, media recycling, tape longevity, or 50% compression will achieve sustainable development goals. However, it is not that simple. Therefore, Leil Storage offers a shortcut, providing its own backup and archive storage systems, available in three versions: standard (maximum capacity 1.5 PB), advanced (9 PB), and enterprise green (up to 15 PB). Leil Storage uses 28TB UltraSMR disks manufactured by Western Digital.

This choice is not accidental. SMR disks are currently only used by hyperscalers. Unlike universal models with CMR recording technology, data is not written to magnetic tracks located next to each other on a single platter, but overlaps. This design allows you to fit 30% more data on the same area as with CMR media. Additionally, an SMR disk consumes the same amount of energy as a CMR disk, which translates to greater energy efficiency per 1TB of disk space (Leil Storage estimates it to be around 18%).

The startup will introduce a special ICE (Infinite Cold Engine) module this summer, which will cut power to unused disks. According to Leil Storage’s analysis, this will allow for a 43% reduction in energy consumption compared to a classic disk array. The startup predicts that as ICE evolves, savings will increase to 50% in 2025 and even 70% in 2026.

Leil Storage devices are currently compatible with products from companies like Acronis, Cohesity, and Rubrik. Recently, the Estonian startup began work on integrating its product with Storware software.