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2. Dual-ported RAM - Wikipedia

   en.wikipedia.org/wiki/Dual-ported_RAM

   Dual-ported RAM (DPRAM), also called dual-port RAM, is a type of random-access memory (RAM) that can be accessed via two different buses.. A simple dual-port RAM may allow only read access through one of the ports and write access through the other, in which case the same memory location cannot be accessed simultaneously through the ports since a write operation modifies the data and therefore ...

3. Hard disk drive - Wikipedia

   en.wikipedia.org/wiki/Hard_disk_drive

   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 ...

4. External storage - Wikipedia

   en.wikipedia.org/wiki/External_storage

   Today the term external storage most commonly applies to those storage devices external to a personal computer. [5] The terms refer to any storage external to the computer. Storage as distinct from memory in the early days of computing was always external to the computer as for example in the punched card devices and media. Today storage ...

5. List of disk drive form factors - Wikipedia

   en.wikipedia.org/wiki/List_of_disk_drive_form...

   8-, 5.25-, 3.5-, 2.5-, 1.8- and 1-inch HDDs, together with a ruler to show the length of platters and read-write heads A newer 2.5-inch (63.5 mm) 6,495 MB HDD compared to an older 5.25-inch full-height 110 MB HDD. 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.

6. List of interface bit rates - Wikipedia

   en.wikipedia.org/wiki/List_of_interface_bit_rates

   The physical phenomena on which the device relies (such as spinning platters in a hard drive) will also impose limits; for instance, no spinning platter shipping in 2009 saturates SATA revision 2.0 (3 Gbit/s), so moving from this 3 Gbit/s interface to USB 3.0 at 4.8 Gbit/s for one spinning drive will result in no increase in realized transfer rate.

7. Xserve - Wikipedia

   en.wikipedia.org/wiki/Xserve

   Hard drive: 80 GB SATA SATA: Up to 3x 750 GB (2.25 TB) SAS: Up to 3x 300 GB (900 GB) 80 GB SATA SATA: Up to 3x 1 TB (3 TB) SAS: Up to 3x 450 GB (1.35 TB) 160 GB SATA SATA: Up to 3x 2 TB (6 TB) SAS: Up to 3x 450 GB (1.35 TB) Serial ATA 5400-rpm or SAS 15000-rpm Three Internal Bays: Serial ATA 7200-rpm or SAS 15000-rpm Optional 128 GB SSD Boot ...