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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 ...
Since 2005, SPI was gradually replaced by Serial Attached SCSI (SAS), which uses a serial design but retains other aspects of the technology. Many other interfaces which do not rely on complete SCSI standards still implement the SCSI command protocol ; others drop physical implementation entirely while retaining the SCSI architectural model .
Each WWN is an 8- or 16-byte number, the length and format of which is determined by the most significant four bits, which are referred to as an NAA (Network Address Authority). The remainder of the value is derived from an IEEE OUI (or from Company Id (CID)) and vendor-supplied information.
That requires that data be transmitted serially. A similar differential signaling system is used in RS485, LocalTalk, USB, FireWire, and differential SCSI. Serial Attached SCSI (SAS). The SAS is a new generation serial communication protocol for devices designed to allow for much higher speed data transfers and is compatible with SATA.
This overall approach is called SCSI attached enclosure services: The host computer communicates with the disks in the enclosure via a Serial SCSI interface (which may be either FC-AL or SAS). One of the disk devices located in the enclosure is set up to allow SCSI Enclosure Services (SES) communication through a LUN. The disk-drive then ...
Serial ATA; Serial Attached SCSI; Shift Register with serial-in and serial-out configuration; SONET and SDH (high speed telecommunication over optical fibers) SpaceWire Spacecraft communication network; S/PDIF and AES3 audio communication protocols; SPI; T-1, E-1 and variants (high speed telecommunication over copper pairs)
SAN—Storage Area Network; SAS—Serial attached SCSI; SATA—Serial ATA; SAX—Simple API for XML; SBOD—Spinning Beachball of Death; SBP-2—Serial Bus Protocol 2; sbin—superuser binary; sbs—Small Business Server; SBU—Standard Build Unit; SCADA—Supervisory Control And Data Acquisition; SCID—Source Code in Database; SCM—Software ...
Diagrams of different Parallel SCSI symbols [1]. Parallel SCSI is not a single standard, but a suite of closely related standards. There are a dozen SCSI interface names, most with ambiguous wording (like Fast SCSI, Fast Wide SCSI, Ultra SCSI, and Ultra Wide SCSI); three SCSI standards, each of which has a collection of modular, optional features; several different connector types; and three ...