Storage Area Network (SAN)
SAN (storage area network) is a high-speed network of storage devices that also connects those storage devices with servers. It provides block-level storage that can be accessed by the applications running on any networked servers. SAN storage devices can include tape libraries and disk-based devices, like RAID hardware.
SAN Vs. DAS Performance
Organizations often choose to deploy a storage area network because it offers better flexibility, availability and performance than direct-attached storage (DAS). Because a SAN removes storage from the servers and consolidates it in a place where it can be accessed by any application, it tends to improve storage utilization. Storage utilization improvements often allow organizations to defer purchases of additional storage hardware, which saves money and requires less space in the data center.
- SAN fabric
The hardware that connects workstations and servers to storage devices in a SAN is referred to as a “fabric.” The SAN fabric enables any-server-to-any-storage device connectivity through the use of Fibre Channel switching technology.
- Session Announcement Protocol (SAP)
(1) Short for Session Announcement Protocol, an announcement protocol used to communicate the relevant session setup information to prospective participants during multicast sessions. SAPs typically use the Real-Time Transport Protocol (RTP). (2) Short for Service Advertising Protocol, a NetWare protocol used to identify the services and addresses of servers attached to the network. The responses […]
- SAP DB
An open source SQL-based database system for enterprises. SAP DB supports Linux, Windows, IBM-AIX, SUN-Solaris, Tru64-Unix, and HP-UX.
(pronounced as separate letters) Short for Serial Attached SCSI, an evolution of parallel SCSI into a point-to-point serial peripheral interface in which controllers are linked directly to disk drives. SAS is a performance improvement over traditional SCSI because SAS enables multiple devices (up to 128) of different sizes and types to be connected simultaneously with […]
Acronym for Simple Authentication and Security Layer. Originating with RFC 2222, written by John Myers while at Netscape Communications, SASL is a method for adding authentication support to connection-based protocols. SASL takes effect when a protocol initiates a command for identifying and authenticating a user to a server. SASL also includes an option for negotiating […]