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2. Serial Attached SCSI - Wikipedia

   en.wikipedia.org/wiki/Serial_attached_SCSI

   In computing, Serial Attached SCSI (SAS) is a point-to-point serial protocol that moves data to and from computer-storage devices such as hard disk drives, solid-state drives and tape drives. SAS replaces the older Parallel SCSI (Parallel Small Computer System Interface, usually pronounced "scuzzy" [ 3 ] [ 4 ] ) bus technology that first ...

3. Storage area network - Wikipedia

   en.wikipedia.org/wiki/Storage_area_network

   A storage area network (SAN) or storage network is a computer network which provides access to consolidated, block-level data storage. SANs are primarily used to access data storage devices, such as disk arrays and tape libraries from servers so that the devices appear to the operating system as direct-attached storage .

4. SATA - Wikipedia

   en.wikipedia.org/wiki/SATA

   A 3.5-inch Serial ATA hard disk drive A 2.5-inch Serial ATA solid-state drive. SATA was announced in 2000 [4] [5] in order to provide several advantages over the earlier PATA interface such as reduced cable size and cost (seven conductors instead of 40 or 80), native hot swapping, faster data transfer through higher signaling rates, and more efficient transfer through an (optional) I/O queuing ...

5. SCSI - Wikipedia

   en.wikipedia.org/wiki/SCSI

   Parallel SCSI specifications include several synchronous transfer modes for the parallel cable, and an asynchronous mode. The asynchronous mode is a classic request/acknowledge protocol, which allows systems with a slow bus or simple systems to also use SCSI devices. Faster synchronous modes are used more frequently.

6. Hard disk drive interface - Wikipedia

   en.wikipedia.org/wiki/Hard_disk_drive_interface

   Power cable not shown. The earliest hard disk drive (HDD) interfaces were bit serial data interfaces that connected an HDD to a controller with two cables, one for control and one for data. [a] An additional cable was used for power, initially frequently AC but later usually connected directly to a DC power supply unit. The controller provided ...

7. Fibre Channel - Wikipedia

   en.wikipedia.org/wiki/Fibre_Channel

   The Fibre Channel SAN connects servers to storage via Fibre Channel switches. The goal of Fibre Channel is to create a storage area network (SAN) to connect servers to storage. The SAN is a dedicated network that enables multiple servers to access data from one or more storage devices.