With generative AI driving an exponential surge in global data volume, data centers are facing unprecedented challenges in terms of storage density, footprint, and energy consumption. Seagate announced that its next-generation Mozaic 4+ platform, equipped with the latest Heat-Assisted Magnetic Recording (HAMR) technology, has successfully passed verification by two major cloud service providers (Hyperscaler) and has officially entered mass production. This not only pushes the capacity of a single hard drive to an astonishing 44TB, but also makes it the industry's only HAMR storage platform that has truly achieved large-scale deployment. Through its proprietary "vertically integrated photonics technology," Seagate has not only established the commercial position of HAMR technology but also prepared for the future development of the ultimate 100TB hard drive.
AI-Driven Storage Revolution: Why Do We Still Need Traditional Hard Drives?
With the widespread adoption of flash memory (SSD), many people may ask: why do we still need traditional hard drives (HDD)?
The answer lies in the brutal growth curve of costs and data volume. According to IDC forecasts, global data volume will increase from 72 ZB in 2020 to 527 ZB by 2029. With the popularization of AI, historical archives, audio-visual data, and synthetic data have become the most valuable assets. However, currently, as much as 87% of cloud storage still relies on traditional hard drives. For hyperscale data centers that need to store exabyte (EB) level data, traditional hard drives still have an absolute advantage in "cost per TB" that SSDs cannot shake.
With an estimated 15000 new data centers expected to be built globally by 2030, consuming 10 times more power than current data centers (approximately 100-300 MW), maximizing storage density within limited space has become the biggest opportunity for the creation of the Seagate Mozaic 4+ platform.
Mastering the core essence: Abandoning outsourcing and moving towards "vertical integration" in laser technology
The only widely accepted solution to overcome the physical limitations of traditional perpendicular magnetic recording (PMR) is HAMR (heat-assisted magnetic recording). This technology uses extremely small lasers to instantly heat the surface of the disk, allowing data to be written in a more dense manner.
However, HAMR's biggest technological bottleneck lies in its extremely precise "nanophoton laser." Seagate made a highly strategic decision with the Mozaic 4+ platform: abandoning the external procurement of laser components and turning to internal "vertically integrated laser technology."
This decision, similar to Apple's self-developed M-series processors, allows Seagate to fully control the design and manufacturing of key components for HAMR magnetic recording. This not only enhances the compatibility between the read/write head and the laser, but also substantially improves the yield of mass production, the reliability of long-term operation, and the "supply chain resilience" in today's turbulent geopolitical environment.
At the same time, vertical integration of resources ensures the predictability of manufacturing costs, making HAMR hard drives no longer just expensive exhibits in laboratories.
"Physics of Scale": The astonishing economic benefits of deploying 1 EB
The Mozaic 4+ achieves a high recording density of over 4TB per disk by using a design with 10 platters on a single hard drive. But what does this specifically mean for data centers? Seagate proposed a specific calculation called "The Physics of Scale":
Suppose a large cloud provider needs to build 1 Exabyte (EB) of storage space:
• It uses a traditional 30 TB hard drive (with a single-platter storage capacity of 3 TB):It requires 33330 hard drives, occupies 314 square feet of server room space, and consumes approximately 2.6 GWh of electricity per year.
• A 44TB hard drive (4TB+ per platter) designed using the Mozaic 4+ platform:With only 22700 hard drives, the footprint is drastically reduced to 214 square feet, and the annual power consumption is reduced to approximately 1.80 GWh.
Overall, the Mozaic 4+ platform design can deliver up to 47% infrastructure efficiency improvements for data centers. With AI computing power consuming enormous amounts of data center power, storage devices can save nearly 30% on power consumption and floor space, which is undoubtedly a huge incentive for large enterprises in terms of total cost of ownership (TCO) and ESG sustainability metrics.
Future Blueprint: Aiming for the ultimate goal of 10 TB per platter and 100 TB total capacity.
Mozaic 4+只是個開始，Seagate在簡報秀出未來十年的技術路線圖：預計在2028年將磁錄密度推升至單碟5TB+，並且計畫在2032年及之後實現單碟儲存容量達10 TB+的目標。這意味在不改變現有3.5吋硬碟物理尺寸與基礎架構的前提下，Seagate將在未來十年內見證單顆容量高達100 TB的超級硬碟問世。
