While Western Digital, Seagate and HGST all have consumer-grade 6 TB hard drives already on the market, Toshiba is playing catch-up; the company is only now announcing 4 TB and 5 TB desktop hard drives.
The two drives fall under the "Desktop" series of hard drives from the company and spin at 7200 RPM. They use Perpendicular Magnetic Recording technology and have support for NCQ and TMR head recording, too. Toshiba has also equipped the drives with internal shock detection and ramp loading technology for added durability.
Both the drives feature the industry-standard SATA3 (6 Gb/s) interface, making them compatible with almost every PC out there.
On top of being late to the party, Toshiba also priced the drives quite high. The 4 TB model carries an MSRP of $299, while the 5 TB drive should cost $399. For comparison's sake, competing hard drives can be found for about half that on Newegg. Toshiba, however, is known to have excessively high MSRP's on its hard drives, and it almost always ends up having lower street prices.