HDDs

Western Digital this week said that its energy-assisted magnetic recording (ePMR) and OptiNAND technologies coupled with increased number of platters per hard drive would enable it to build HDDs with an up to 30 TB capacity. To keep advancing capacities from there, the company will need to use heat-assisted magnetic recording (HAMR), it revealed. Meanwhile, noticeably absent was any mention of microwave-assisted magnetic recording (MAMR), the technology that was expected to precede HAMR. Building a 22TB HDD for 2022 Last month Western Digital's began shipping its top-of-the-range Ultrastar DC HC560 20TB and WD Gold 20TB hard drives that rely on nine 2.2 TB ePMR platters and feature the company's OptiNAND technology that uses an embedded flash drive (EFD) to increase performance, reliability, and usable capacity...