5 Facts that Chief Sustainability Officers Need to Know about Data Storage

Climate Change Not Going Away

In case anyone was thinking climate change wasn’t real, guess again! If you’ve been in the friendly skies recently for a business trip or a vacation, you probably noticed that the skies are not that friendly anymore. That’s because clear-air turbulence is a more common occurrence these days. One chatty pilot I encountered advised that we could expect a “bumpy” flight suggesting it was the new normal due to instability in the atmosphere caused by climate change. There have been several reports this year of unbuckled passengers and flight attendants injured and traumatized by extreme turbulence.

With new U.N. warnings of irreversible damage to communities and ecosystems as a backdrop, the award winning 60 Minutes show recently ran a piece on an experimental technology called “direct air capture” that vacuums CO2 out of the air and locks it deep in the ground where eventually it turns to harmless solid rock. It’s a mammoth undertaking and an admitted long shot, but it goes to show that eventually there will be no stone left unturned in the battle to reduce CO2 in our atmosphere.

In the meantime, the tech giants like AWS, Microsoft, Google and Meta are investing billions of dollars in renewable energy sources including wind and solar. And they are spending billions on really amazing technologies like liquid immersive cooling where hardware operates in a solution of mineral oil in what looks like fish tanks. All great undertakings for sure, but not exactly the low-hanging fruit my CSO friend was looking for. She admitted that her organization needs to simply start by “turning off the lights at day’s end”. Every little bit of energy conversation makes a difference and that’s where today’s modern automated tape systems are low-hanging fruit when it comes to exponential data growth and alarming data center energy consumption.

5 Facts about Data Storage for CSOs

So as our CSO friend prepares to make meaningful change from the top on down and across all departments in her organization, here are 5 facts every CSO should know when dealing with the IT department in search of meaningful carbon reduction opportunities.

1. Data growth not slowing down – despite a slow-down in storage demand to close out last year, nothing is stopping long term data growth. We’re squarely in the zettabyte age and industry experts expect continuous annual data growth rates of anywhere from 25 to 45% through the end of this decade. Data-driven organizations rely on data to make better decisions and gain competitive advantage. With AI fueled data analytics, the value of data is only increasing and retention periods will be extended from years to decades and in some cases indefinitely. Unless directed by the legal team to delete certain data after say 7 years in the case of accounting records or email, end users tend to keep everything just in case its needed in the future for some unforeseen but critical need.
2. Data centers are energy intensive – studies vary but suffice it say data centers have traditionally consumed anywhere from 1 to 3% of global electricity and are said to put as much CO2 into the atmosphere as the entire airline industry. Projections for data center growth are dramatic as the world becomes more digitally connected and dependent, with some experts projecting global data center share of electricity consumed as high as 13% by 2030. Meanwhile, data storage is a significant energy consumer – again studies vary, but typically data storage is around 20% of data center energy consumption and if annual data growth tracks with predictions of 25 to 45% then the 20% share will significantly expand.
3. Data quickly goes cold – industry experts agree that 60% to 80% of data goes cold and becomes archival between 30 and 90 days after creation. After 90 days, the probability of accessing that data falls below 1%. However, legacy data may be demanded again for business or scientific analytics or for purpose of monetization so users are reluctant to delete anything with potential value.
4. Tape is the greenest form of data storage – today’s modern and highly advanced automated data tape systems are the greenest form of storage available for the foreseeable future. Landmark studies by industry expert Brad Johns show that automated tape libraries consume 87% less energy than equivalent amounts of hard disk drive capacity and over their lifecycle from raw materials to manufacturing, distribution, usage and disposal produce 97% less CO2e.
5. Tape has the lowest total cost of ownership – automated on-prem tape systems also provide for the lowest total cost of ownership compared to economy hard disk drive systems or the cloud. TCO studies of 5 year and 10 year retention periods from terabytes to exabytes favor tape by as much as 80% compared to disk and more than 70% compared to cloud. This makes moving cold, infrequently accessed data from expensive and energy intensive disk systems to tape low-hanging fruit indeed. It’s always good when carbon reduction opportunities actually save money!

In addition to renewable energy sourcing and really cool things like liquid immersion cooling, the major cloud service providers and many of the largest data intensive organizations are finding ways to simply conserve energy usage. They understand the dynamics, cost and energy advantage outlined above and have built their long-term archival services and strategies on today’s modern tape systems. Not to mention that tape is best in reliability and supports a comprehensive cyber security plan with its inherent air gap capabilities.

Finally, a well-planned long-term data retention strategy typically includes tape systems as complementary to flash, disk and cloud. It’s not an either or proposition. It’s really about getting the right data in the right place, at the right time. And most importantly for the CSOs, at the right cost and energy profile!