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HGST’s 10TB drive uses shingled magnetic recording (SMR) to increase areal density, while the 8TB drive uses standard magnetic recording (PMR). HGST says the...
HGST’s 10TB drive uses shingled magnetic recording (SMR) to increase areal density, while the 8TB drive uses standard magnetic recording (PMR). HGST says the performance of SMR is not yet up to that of PMR. Because of this, the drive is being marketed for cloud and cold storage, where access and read/write speeds are not as significant.
The following video from Seagate explains SMR: