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100TB hard drives could be possible thanks to graphene

Segate HAMR hard drive
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Hard drives aren't ready to give up the ghost just yet, and the latest research promises to get them back on track to hit 100TB capacities in the next decade.

This capacity was initially promised by Heat Assisted Magnetic Recording technology, or HAMR for short, but it's hit a few speed bumps on the way. Worry not though, because the wonder material that is graphene has jumped to the rescue yet again to make for a smoother tomorrow for all.

Heat Assisted Magnetic Recording technology is still key to hitting huge capacity hard drives, but as the data density has increased, so the impact of friction, wear, corrosion and thermal stability have stepped in to spoil everyone's party.

At the moment HAMR hard drives use carbon-based overcoats (COCs) to protect the drive platter surfaces. The problem is, this COC layer is still relatively thick, and that's been limiting the pursuit of high data densities.

Researchers from the University of Cambridge (opens in new tab), specifically the Cambridge Graphene Centre, believe they have the answer—replace those carbon overcoats with graphene overcoats (GOCs, I guess).

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They tested this out by replacing carbon overcoats with graphene ones and sure enough, the graphene overcoats lowered surface friction, offered improved corrosion protection, and made for much smoother surfaces as well.

If you know your way around a science paper then you can check out the whys and wherefores in this write-up over at Nature Communications (opens in new tab), but be warned it isn't particularly light reading.

The takeaway here though is that hard drives still have a place in our PCs, despite the advances made with SSDs. We shudder to think how much a 100TB M.2 drive would cost.

Alan has been writing about PC tech since before 3D graphics cards existed, and still vividly recalls having to fight with MS-DOS just to get games to load. He fondly remembers the killer combo of a Matrox Millenium and 3dfx Voodoo, and seeing Lara Croft in 3D for the first time. He's very glad hardware has advanced as much as it has though, and is particularly happy when putting the latest M.2 NVMe SSDs, AMD processors, and laptops through their paces. He has a long-lasting Magic: The Gathering obsession but limits this to MTG Arena these days.