Samsung’s 3D NAND is currently used in Kaminario K2 all-flash arrays and is being tipped for MacBooks.
Neither Google nor Samsung have commented but if it pans out then it means that stacking 32 layers of planar 2D NAND built using 39-30nm-class cell geometry in a die, is the way forward. It also means that Samsung must have a better price and performance advantage over other flash fabricators.
Samsung’s 3D NAND is generally available while its rivals are still at the sampling stage with GA late this year or in 2016. SanDisk is sampling a 48-layer chip, but Samsung is expected to match that soon.
Since it has signed big supply deals with Amazon, Apple and Google, Samsung clearly has its foot in the door. It also means that these big data centre operators will be buying less planar NAND than otherwise from the other flash suppliers.