Seagate has recently addressed common misconceptions about its heat-assisted magnetic recording (HAMR) technology in a blog post. The company clarified that the reliability of HAMR now matches that of traditional perpendicular magnetic recording (PMR) hard drives. This statement comes after extensive testing and optimization efforts to validate the durability and longevity of HAMR technology.
Seagate has been implementing HAMR and associated technologies to enhance magnetic density, which is a critical factor in data capacity per disk platter, typically measured in terabytes per disk. Since 2016, the company has been conducting simulated field use tests on its Mozaic 3+ products and gradually optimizing key components. Over the past two years, these efforts have yielded a 50% improvement in reliability, bringing it to the level of PMR drives.
Further testing involved thousands of Mozaic 3+ read/write heads, each demonstrating the capability to reliably transfer data for over 6,000 hours, roughly equivalent to eight months. This means that each head can manage the transfer of approximately 3.2 petabytes of data – more than 20 times the data handling capacity of a typical nearline hard drive.
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