An optical isolator is a passive magneto-optic device that makes travel of light unidirectionally. The operation of the device is based on the Faraday effect. It is used in applications to avoid unwanted feedback to the system using the optical isolator. Optical isolators are also known as optoisolators, optocouplers and photocouplers.
IP storage (IPS) is the use of fiber channel (FC) and IP-based technology to access storage devices using TCP/IP networks. IPS is the foundation that enables storage area networks (SANs) to directly connect servers with storage.
IPS is designed to support transparency in diverse systems, working collectively in storage devices centered on small computer system interface (SCSI), fiber channel and gigabit Ethernet storage devices, which use Internet Fiber Channel Protocol (iFCP) and Internet Small Computer System Interface (iSCSI). Transparent interoperability includes current SCSI or fiber channel modules, storage subsystems, or servers with host bus adapters. These modules can be incorporated into an IPS network without adjustment.
IPS is standardized by the Internet Engineering Task Force (IETF) Working Group, a standards organization that identifies problems and opportunities in IP data networks and proposes solutions to the Internet community.
IPS can also be used in intranet or extranet and may also connect a storage area network (SAN) to remote areas.
The benefits of using IPS include:
The IPS framework is applied through networking infrastructures linking current SCSI, fiber channel and other devices with gigabit Ethernet support networks. The end components can be used as storage devices or servers on all current storage structures within the ISP and, for direct integration, with the gigabit Ethernet network.
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