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Storage servers housing 24 SAS hard disk drives per server. A typical Serial Attached SCSI system consists of the following basic components: An initiator: a device that originates device-service and task-management requests for processing by a target device and receives responses for the same requests from other target devices.
SES-2 over I²C is still used for storage backplanes enclosure management, although a competing method for enclosure management communication is now becoming prominent. Serial GPIO ( SGPIO ), provides a simpler, less expensive solution and is now more widespread than SES-2.
A World Wide Name (WWN) or World Wide Identifier (WWID) is a unique identifier used in storage technologies including Fibre Channel, Parallel ATA, Serial ATA, SCSI and 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. SAS uses a mechanically identical data and power connector to standard 3.5-inch SATA1/SATA2 HDDs, and many server-oriented SAS RAID controllers are also capable of addressing SATA hard drives.
SAS (Serial Attached SCSI) is the interface architecture used to transmit data from the storage controllers to the disk drives in the Adaptable Modular Storage 2000 family. The SAS interface is a full duplex, point-to-point architecture with up to 9600 MB/sec of total system bandwidth and up to 32 links available for concurrent I/O activity.
In computer storage, a logical unit number, or LUN, is a number used to identify a logical unit, which is a device addressed by the SCSI protocol or by Storage Area Network protocols that encapsulate SCSI, such as Fibre Channel or iSCSI.
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 .
SAS (previously "Statistical Analysis System") [1] is a statistical software suite developed by SAS Institute for data management, advanced analytics, multivariate analysis, business intelligence, criminal investigation, [2] and predictive analytics.