William David Mosley
Chief Executive Officer & Director at Seagate Technology
Thank you, Shanye, and hello, everyone.
Seagate ended fiscal 2024 are on a high note, reflecting strong operational execution and more favorable supply-demand dynamics. Fourth quarter revenue increased 18% year-on-year, supported by strengthening global cloud demand. We achieved non-GAAP gross margin of nearly 31% at the company level, supported by HDD gross margins that were above that level and at the top end of our long-term target range. These results, along with ongoing expense discipline led to non-GAAP EPS of $1.05, far exceeding the high end of our guidance range.
At the start of the fiscal year, we highlighted 3 financial priorities, namely to increase profitability, drive cash generation and strengthen our balance sheet. Reflecting on our full year performance, we delivered on all three. Our results were due in part to the build-to-order or BTO strategy that we put in place to provide greater supply-demand predictability and optimize our cash resources. For fiscal '24, we expanded non-GAAP operating profit by 64%, grew free cash flow sequentially every quarter of the fiscal year, and maintained healthy liquidity levels. As we enter the new fiscal year with operating and financial momentum in an improving demand environment, executing our mass capacity product road map is a top priority. In the September quarter, we expect to complete the HAMR-based Mozaic 3+ product qualification with our lead CSP partner.
We've also started to ramp our 28 -- terabyte PMR SMR product platform drives in high volume. These two product advancements align well with the strengthening nearline demand environment. I'll share further details around our product execution momentarily, but first, I'll briefly review the current market trends. As I highlighted a moment ago, we are seeing strong nearline cloud demand growth from customers globally. Fourth quarter nearline cloud revenue more than doubled from the year ago period, and we expect growth to continue in fiscal 2025. We attribute the underlying demand drivers to an increase from both traditional cloud computing workloads as well as new AI-related deployments. We believe this demand rebound follows a period of deferred HDD storage investments by cloud providers as they prioritize spending towards compute-intensive infrastructure.
While cloud service providers are continuing to build out that infrastructure, they increasingly focused on developing, deploying and monetizing AI applications. This involves both training of large language models and expanding the entire hardware stack to support future generative AI content-driven growth. While HDD demand pull-through related to AI is still relatively small, we believe HDDs will play a crucial role in enabling both of these phases of the AI adoption curve. By offering cost-efficient, scalable storage solutions, are ideal for maintaining the integrity of AI training data sets as well as preserving the valuable content that AI engines are projected to generate in the future.
In the enterprise OEM markets, we observed a gradual improvement in demand for the second consecutive quarter and continue to project stronger growth in the second half of the calendar year, driven by both modest improvement in traditional server unit demand and increased exabyte content. We've also started to see incremental demand for higher-density storage specific solutions due in part to enterprises putting storage capacity in place, either on-prem or in private clouds as they prepare for future AI applications.
Finally, turning to the VIA markets. Sales of our VIA products came in better than we expected in the June quarter, while customer inventory remains at healthy levels. We expect VIA sales will likely fluctuate a bit in the second half of the calendar year, off of this higher base. Global demand indications for smart city projects remain strong, but near-term budget visibility for these projects is mixed in many markets amid the current global macro uncertainty. Overall, the end market demand trends are solidly pointing to long-term growth opportunities for mass capacity storage. Demand recovery for our high capacity nearline drives has been faster than anticipated, which has extended product lead times and lend to tighter overall supply conditions.
Based on our current outlook, our nearline exabyte supply is committed through the end of the calendar year. These trends underscore the relevance of our BTO strategy, which is intended to provide greater demand predictability for Seagate and supply assurance for our customers. In this environment, we are working with our customers to obtain better demand visibility and address their exabyte growth needs through product transitions while maintaining a strong focus on profitability and supply discipline.
As noted last quarter, we are executing the qualification and ramp of two new high-capacity drives. Transitioning to these higher capacity products enable Seagate to profitably expand exabyte shipment volume with our existing head and disk production capacity while also supporting our customers' growing data demand and TCO needs. Customer acceptance of our new PMR product continues to gain momentum. These drives, which offer capacities of up to 28 terabytes have demonstrated solid yield, quality and performance to date, with numerous customers now qualified spanning the cloud, enterprise and VIA markets and several more planned to complete in the coming months, volume ramp is already underway. In the June quarter, we shipped a small volume of HAMR-based Mozaic drives for revenue to non-cloud customers.
Consistent with our recent public commentary, our lead CSP customer is validating drives built with the improved process controls and new firmware optimized for their specific workloads. Testing on these drives is progressing to plan, and we expect to complete qualification and begin shipping them revenue units later in the September quarter. Based on our confidence in the technology and experience on this product platform, we are proceeding to launch new HAMR qualifications with the expectation to have multiple US and China cloud customers calls underway this quarter. We estimate these qualifications will take around 3 quarters on average to complete which points to a broader volume ramp toward mid-calendar 2025.
We are leveraging all of our learnings and pushing the pace of development on our next generation of HAMR drives, The Mozaic 4+. Mozaic 4+ offers 33% more capacity compared with the HAMR drives that we're shipping today with minimal changes to the building materials. This illustrates the central value proposition of the Mozaic platform, namely the technology's ability to scale drive capacity through aerial density gains rather than adding heads and disks. This capability is enabling Seagate to deliver significant cost benefits to our customers as well as offer power and space advantages that are particularly valuable for data center operators as they expand cloud and AI infrastructure.
For example, each data center slot loaded with one of our Mozaic 3+ drives offers 3 times the storage capacity relative to the average capacity of nearline drives in our installed base, and consumes about 70% less power per terabyte. These represent tremendous savings opportunities for data centers at exabyte scale. We are hearing from customers directly, including CSPs, that HDDs already play a crucial role in extracting value from data in the early stages of AI application deployment. As GenAI engines mature, customers expect an acceleration in content creation that will lead to significant demand for mass capacity storage. We recognize that GenAI is still in its early stages of adoption. However, this customer feedback combined with our early engagements with nearline cloud and OEM customers reinforces our view that mass capacity storage will be a beneficiary in both the cloud and at the edge as the adoption of these new exciting applications take hold.
I'll stop there and pass the call over to Gianluca.