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2. Solid-state drive - Wikipedia

   en.wikipedia.org/wiki/Solid-state_drive

   The first flash-memory SSD based PC to become available was the Sony Vaio UX90, announced for pre-order on 27 June 2006 and began shipping in Japan on 3 July 2006 with a 16 GB flash memory hard drive. [158]

3. Density (computer storage) - Wikipedia

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

   For example, the first commercial hard drive, IBM's RAMAC in 1957, supplied 3.75 MB for $34,500, or $9,200 per megabyte. In 1989, a 40 MB hard drive cost $1200, or $30/MB. And in 2018, 4 Tb drives sold for $75, or 1.9¢/GB, an improvement of 1.5 million since 1989 and 520 million since the RAMAC.

4. Disk buffer - Wikipedia

   en.wikipedia.org/wiki/Disk_buffer

   A 500 GB Western Digital hard disk drive with a 16 MB buffer. In computer storage, a disk buffer (often ambiguously called a disk cache or a cache buffer) is the embedded memory in a hard disk drive (HDD) or solid-state drive (SSD) acting as a buffer between the rest of the computer and the physical hard disk platter or flash memory that is ...

5. History of hard disk drives - Wikipedia

   en.wikipedia.org/wiki/History_of_hard_disk_drives

   The 1980s saw the minicomputer age plateau as PCs were introduced. Manufacturers such as IBM, DEC and Hewlett-Packard continued to manufacture 14-inch hard drive systems as industry demanded higher storage; one such drive is the 1980 2.52 GB IBM 3380. But it was clear that smaller Winchester storage systems were eclipsing large platter hard drives.

6. Megabyte - Wikipedia

   en.wikipedia.org/wiki/Megabyte

   In this convention, one thousand and twenty-four megabytes (1024 MB) is equal to one gigabyte (1 GB), where 1 GB is 1024 3 bytes (i.e., 1 GiB). Mixed 1 MB = 1 024 000 bytes (= 1000×1024 B) is the definition used to describe the formatted capacity of the 1.44 MB 3.5-inch HD floppy disk , which actually has a capacity of 1 474 560 bytes .

7. Disk sector - Wikipedia

   en.wikipedia.org/wiki/Disk_sector

   In computer disk storage, a sector is a subdivision of a track on a magnetic disk or optical disc. For most disks, each sector stores a fixed amount of user-accessible data, traditionally 512 bytes for hard disk drives (HDDs), and 2048 bytes for CD-ROMs , DVD-ROMs and BD-ROMs . [ 1 ]

8. List of interface bit rates - Wikipedia

   en.wikipedia.org/wiki/List_of_interface_bit_rates

   7.84 MB/s: PC Card 16-bit 100 ns byte mode: 80 Mbit/s: 10 MB/s: PC Card 16-bit 100 ns word mode: 160 Mbit/s: 20 MB/s: PC Card 32-bit (CardBus) byte mode: 267 Mbit/s: 33.33 MB/s: ExpressCard 1.2 USB 2.0 mode: 480 Mbit/s: 60 MB/s: 2003 PC Card 32-bit (CardBus) word mode: 533 Mbit/s: 66.66 MB/s: PC Card 32-bit (CardBus) doubleword mode: 1067 Mbit ...

9. IOPS - Wikipedia

   en.wikipedia.org/wiki/IOPS

   550 MB/s sequential read, 520 MB/s sequential write on 256 GB and larger models 550 MB/s sequential read, 470 MB/s sequential write on 128 GB model [18] Virident Systems tachIOn SSD Up to [neutrality is disputed] 320,000 sustained READ IOPS using 4 kB blocks, and up to 200,000 sustained WRITE IOPS using 4kB blocks [19] PCIe OCZ RevoDrive 3 X2 SSD