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2007 - Hitachi is the first to offer a 1 TB hard drive in a 3.5 inch form factor. [54] [55] [56] 2009 - Western Digital is the first to offer a 1 TB hard drive in a 2.5 inch form factor. [57] 2009 – Western Digital ships first HDD with dual stage piezoelectric actuator [58]
Software reports hard disk drive or memory capacity in different forms using either decimal or binary prefixes. The Microsoft Windows family of operating systems uses the binary convention when reporting storage capacity, so an HDD offered by its manufacturer as a 1 TB drive is reported by these operating systems as a 931 GB HDD.
Solid-state drive (SSD) Hard disk drive (HDD) Price per capacity SSDs are generally more expensive than HDDs and are expected to remain so. As of early 2018, SSD prices were around $0.30 per gigabyte for 4 TB models. [23] HDDs, as of early 2018, were priced around $0.02 to $0.03 per gigabyte for 1 TB models. [23] Storage capacity
The drive had a capacity of 2.03 GB (1.69 GB formatted), was available with FAST SCSI-2 (N/ND models) or WIDE SCSI-2 (W/WD models) interface, and was the first hard drive ever to have a spindle speed of 7200-RPM. Owing to the rotational speed, it was very fast but very expensive at the time.
The hard drive typically found in a Time Capsule is the Hitachi Deskstar, which is sold by Hitachi as a consumer-grade product—the Hitachi Ultrastar is the enterprise version. [16] Apple labeled the drive as a server-grade drive in promotional material for Time Capsule, and also used this type of drive in its discontinued Xserve servers.
Western Digital later "updated" the line by rebranding a WD Blue drive to the Z5K500.B and WD Black to Z7K500.B, the Z5K500.B can only be configured with 16 MB cache while the Z7K500.B is only available with 32MB cache. In 2017 Western Digital released the Z5K1, a 7mm 1TB hard drive that is the only HGST drive to ever feature drive-managed SMR.