Western Digital breaks a record by introducing the first 26TB hard drive

Western Digital just broke the 20TB barrier by announcing two new hard drives: the Ultrastar DC HC570 22TB and the Ultrastar DC HC670 26TB.
The 22 TB Ultrastar DC HC570 uses ePMR (Energy-Assisted PMR) technology, among other things, to store 2.2 TB of data per disk. This technology creates an additional magnetic field throughout the writing process by applying an electric current to the main pole of the writing head. The disc also benefits from triple articulated arms (triple-stage actuator), helium fill (HelioSeal), and OptiNAND technology. This saves controller metadata to flash memory, freeing up disk space.

But the 26TB Ultrastar DC HC670 goes even further by adding SMR (Shingled Magnetic Recording) technology. The latter consists of tightening the tracks and reading but also writing multiple tracks at the same time. This results in storage of 2.6 TB of data per platter, for a total capacity of 26 TB. The resulting technology is called UltraSMR by the manufacturer.

The manufacturer combines several technologies to design a model with 10 platters of 2.6 TB. It also announces a hard drive with a storage capacity of 22 TB.
The disc also benefits from triple-jointed arms (triple-stage actuator), helium filling (HelioSeal), and OptiNAND technology. These stores control metadata in flash memory, which frees up disk space.

But the Ultrastar DC HC670 26TB goes even further by adding SMR (Shingled Magnetic Recording) technology. The latter consists of tightening the tracks and reading, but also writing, several tracks at the same time. This gives storage of 2.6 TB of data per platter, for a total capacity of 26 TB. The resulting technology is called UltraSMR by the manufacturer.

The arrival of consumer UltraSMR hard drives is therefore unlikely, while PMR technology could become widespread in a few years.

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