Good day and welcome to the Pure Storage fourth quarter and full year fiscal 2025 financial results conference call. Today's conference is being recorded. All lines will be muted during the presentation portion of the call, with an opportunity for questions and answers at the end. If you would like to ask a question, please press star zero on your telephone keypad. At this time, I'd like to turn the call over to Paul Ziots, Vice President of Investor Relations. Please go ahead.
Thank you. Good afternoon, everyone, and welcome to Pure's fourth quarter fiscal year 2025 earnings conference call. On the call, we have Charlie Giancarlo, Chief Executive Officer, Kevan Krysler, Chief Financial Officer, and Rob Lee, Chief Technology Officer. Following Charlie's and Kevan's prepared remarks, we will take questions. Our press release was issued after close of market and is posted on our website where this call is being simultaneously webcast. The slides that accompany this webcast can be downloaded at investor.purestorage.com. On this call today, we will make forward-looking statements which are subject to various risks and uncertainties. These include statements regarding our financial outlook and operations, our strategy, technology and its advantages, our current and new product offerings, and competitive industry and economic trends. Any forward-looking statements that we make today are based on facts and assumptions as of today, and we undertake no obligation to update them.
Our actual results may differ materially from the results forecasted, and reported results should not be considered as an indication of future performance. A discussion of some of the risks and uncertainties relating to our business is contained in our filings with the SEC, and we refer you to these public filings. During this call, all financial metrics and associated growth rates are non-GAAP measures other than revenue, remaining performance obligations, or RPO, and cash and investments.
Reconciliations to the most directly comparable GAAP measures are provided in our earnings press release and slides. This call is being broadcast live on the Pure Storage Investor Relations website and is being recorded for playback purposes. An archive of the webcast will be available on the IR website and is the property of Pure Storage. Our first quarter fiscal 2026 quiet period begins at the close of business Friday, April 18, 2025.
With that, I'll turn it over to Charlie.
Thank you, Paul. Good afternoon, everyone, and welcome to our Q4 and fiscal 2025 earnings call. We delivered a solid Q4, exceeding both revenue and earnings guidance, and capping off the year marked by progress as our long-term data platform strategy is changing how enterprises think about data storage and management. In FY25, we delivered on several key strategic initiatives. First, we achieved a design win with a top four hyperscaler. This relationship is proceeding well in the next stages of both testing and deployment plans. We see continued progress on certifying our use across multiple price performance layers. Pure's DirectFlash technology will enable this hyperscaler to deploy a consistent architecture across multiple performance tiers of their storage hierarchy. It also allows them to redeploy significant amounts of power and space to new workloads and to increase their data storage performance, reliability, and lifetime.
We also launched our 150 terabyte DirectFlash Module, marking a five-fold increase in capacity over standard hard disks and two and a half over the largest SSDs. We are on track to deliver a 300 terabyte DFM late this year. Next, our expansion and growth of the E Family during the year signified a major advancement to address the expected tenfold increase in unstructured data driven by AI over the next five years. This offers businesses far better economics compared to disk, along with superior power and density efficiencies that will drive the displacement of disk in data centers. The E Family has become a strong competitor to existing hybrid and hard disk environments. The rise of NAND prices in 2024 relative to disk competition did affect gross margins negatively in the year, which we expect to abate in 2025.
We also continue to invest and see success in our Evergreen One program, which has attracted strong customer satisfaction and high existing customer growth. Perhaps our most significant and revolutionary technology advancement last year was the GA release of our Fusion version 2. Available as a non-disruptive upgrade to all Pure customers, Fusion v2 transforms traditional enterprise data storage architectures from application data silos to enterprise data clouds. With Fusion, Pure can now provide customers with data set management services supporting their global data estate. This is an area in the enterprise which is largely managed manually, if at all. Manual management and inadequate traceability of data sets is a leading cause of data sprawl and cyber risk for enterprises worldwide. Fusion opens up significant new opportunity and value for Pure in this space.
The best way for me to describe the transformational impact of Fusion is with a familiar analogy. A decade ago, many of us used an external hard drive to add storage to our computers. It provided additional storage and could back up our files. However, when it filled up, we needed to replace it with a larger unit and migrate the data from the old unit to the new. If a colleague also had a hard drive which had spare capacity, it couldn't easily be shared, and file sharing between computers was difficult. Finally, if the external hard drive failed, there was little that one could do to recover. Today, few people use external drives. We've all moved to personal cloud storage provided by many different cloud providers. The benefits go well beyond just storage. For example, personal cloud storage provides unlimited storage scalability.
When one needs more, one only needs to pay for more without having to migrate data. Consistent updates to their infrastructure with non-disruptive software and hardware improvement. In other words, the service doesn't grow old, and guaranteed resiliency. One expects never to lose your data. Global access. One can access their data from anywhere, from any machine, with search features to find content and easy file sharing with just a few mouse clicks. This model has extended to how colleagues now work in a company.