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IBM's first hard drive, the IBM 350, used a stack of fifty 24-inch platters and was of a size comparable to two large refrigerators. In 1962, IBM introduced its model 1311 disk, which used six 14-inch (nominal size) platters in a removable pack and was roughly the size of a washing machine. This became a standard platter size and drive form ...
Hard disk Seagate Barracuda 1500 GB, 3.5 inch, capacity 1.5 TB, built 2011. The head unload ramp is the orange plastic piece on the right edge of the drive. Available in capacities between 2 TB and 3 TB (XT) with 64 MB cache, 1 TB and 2 TB (LP) with 16 MB or 32 MB cache, 1 TB, 1.5 TB and 2 TB (Green) with 16 MB to 64 MB cache depending on model.
A hard disk drive (HDD), hard disk, hard drive, or fixed disk [a] is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material.
The capacity of hard drives has grown exponentially over time. When hard drives became available for personal computers, they offered 5-megabyte capacity. During the mid-1990s the typical hard disk drive for a PC had a capacity in the range of 500 megabyte to 1 gigabyte. [6] As of February 2025 hard disk drives up to 36 TB were available. [7]
On May 20, 2010, Seagate released an updated range of FreeAgent drives. It includes the FreeAgent Desk, FreeAgent Go, FreeAgent GoFlex and FreeAgent Xtreme. The 3.5" drives have a maximum capacity of 2TB and the 2.5" Freeagent Go has a maximum of 1TB. The Go Special Edition is the same as the regular Go but with a different case.
The hard disk storage space of each model was doubled: capacities were 1 TB and 2 TB, while the prices remained unchanged. [4] In October 2009, several news sites reported that many first-generation Time Capsules were failing after 18 months, [5] with some users alleging that this was due to a design failure in the power supplies. [6]