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Enterprise-class drives can have a height up to 15 mm. Seagate released a 7 mm drive aimed at entry level laptops and high end netbooks in December 2009. Western Digital released on April 23, 2013 a hard drive 5 mm in height specifically aimed at Ultrabooks. [37] Toshiba MK1216GSG 1.8" 120 GB hard disk drive with Micro SATA
i-RAM No Greenliant Systems [7] United States No No Yes No Yes GS Nanotech [8] [9] Russia: No No Yes No No Hewlett-Packard: United States No No Yes No No Hikvision: China No No Yes No No HGST [10] (owned by Western Digital) United States and Japan Formerly, but now absorbed into its parent, Western Digital
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
Two 2.5" external USB hard drives Seagate Hard Drive with a controller board to convert SATA to USB, FireWire, and eSATA Current external hard disk drives typically connect via USB-C; earlier models use USB-B (sometimes with using of a pair of ports for better bandwidth) or (rarely) eSATA connection. Variants using USB 2.0 interface generally ...
1994 – Maxtor introduces the first 5 mm thick hard drive. [26] 1996 – Seagate ships the first 10,000-rpm hard drive, the Cheetah [42] 1997 – IBM Deskstar 16 GB "Titan" – 16,800 megabytes, five 3.5-inch disks; first Giant Magnetoresistance (GMR) heads; 1997 – Seagate introduces the first hard drive with fluid bearings [44]
RAM drives use normal system memory as if it were a partition on a physical hard drive rather than accessing the data bus normally used for secondary storage. Though RAM drives can often be supported directly in the operating system via special mechanisms in the OS kernel, it is generally simpler to access a RAM drive through a virtual device ...