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2. History of hard disk drives - Wikipedia

   en.wikipedia.org/wiki/History_of_hard_disk_drives

   2011 - Samsung announces 1 TB of capacity per 3.5 inch hard drive platter. [60] 2012 – TDK demonstrates 2 TB on a single 3.5-inch platter [61] 2012 – WDC acquires HGST operating it as a wholly owned subsidiary. WDC then provides rights to Toshiba, [62] allowing it to re-enter the 3.5-inch desktop hard disk drive market. [63]

3. Seagate Barracuda - Wikipedia

   en.wikipedia.org/wiki/Seagate_Barracuda

   On release the drives cost $1,850. ... (despite having plans to offer 750 GB and 1 TB IDE drives ... Hard disk Seagate Barracuda 1500 GB, 3.5 inch, capacity 1.5 TB ...

4. Solid-state drive - Wikipedia

   en.wikipedia.org/wiki/Solid-state_drive

   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

5. Orders of magnitude (data) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(data)

   The storage limit for ATA-1 compliant disks introduced in 1994. 1.6 × 10 12 bits (200 gigabytes) – capacity of a hard disk that would be considered average as of 2008. In 2005 a 200 GB harddisk cost US$100, [5] equivalent to $156 in 2023. As of April 2015, this is the maximum capacity of a fingernail-sized microSD card.

6. Density (computer storage) - Wikipedia

   en.wikipedia.org/wiki/Density_(computer_storage)

   Hard disk drives store data in the magnetic polarization of small patches of the surface coating on a disk. The maximum areal density is defined by the size of the magnetic particles in the surface, as well as the size of the "head" used to read and write the data. In 1956 the first hard drive, the IBM 350, had an areal density of 2,000 bit/in 2.

7. Hard disk drive - Wikipedia

   en.wikipedia.org/wiki/Hard_disk_drive

   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.