arbitrated loop


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arbitrated loop

A ring topology used in Fibre Channel. Up to 127 devices may be attached in the loop, but only two can communicate at the same time, reflecting the channel nature of Fibre Channel technology. To communicate with a device several hops down the ring, each device repeats the data to its adjacent node. See Fibre Channel.


Arbitrated Loop
This ring topology is widely used and can connect up to 127 nodes without using a switch. All devices share the bandwidth, and only two can communicate with each other at the same time, with each node repeating the data to its adjacent node. TX means transmit, and RX means receive.
References in periodicals archive ?
A public loop is a Fibre Channel arbitrated loop designed to run in a switched fabric environment.
6,470,007, entitled "Interconnect System for Fibre Channel Arbitrated Loop Including Private Loop Devices", through the unauthorized manufacture, use, sale and offering for sale of various storage area network switching products, including Brocade's Silkworm switch products, which include its "QuickLoop" and "Fabric Assist" product features.
Fibre Channel is unique in its ability to provide interoperability among multiple topologies, including point-to-point, arbitrated loop, and switched.
NYSE:A) has announced the results of a successful 4 Gb/s Fibre Channel Arbitrated Loop (FCAL) interoperability test.
In other words, the 8Gb/s Fibre Channel speeds between the disk drives on a Fibre Channel Arbitrated Loop (FC--AL) all within a storage disk array.
This SBOD (switched bunch of disks) architecture eliminates bus contention related issues associated with Fibre Channel arbitrated loop and therefore ensures the maximum possible performance, reliability and availability in a storage system.
Mark Nossokoff: Yes, some the errors that occur in the arbitrated loop situations--when they occur--they kind of get congregated down and around the loop and it is hard to identify specifically where the individual problem is.
ADIC's own hardware platforms and software applications provide direct support for SCSI, iSCSI, Fibre Channel fabric and arbitrated loop protocols, with development programs in place for other SAN and NAS technologies.
Switched Fibre Channel offers superior performance and reliability over traditional arbitrated loop in large disk array applications", said Jerry Namery, CTO of Winchester Systems.
They hope to eliminate arbitrated loop connections outright, looking for a switch fabric implementation within the array.
When coupled with the VSC7147 2Gb/s Fibre Channel Hex PBC or the VSC7192 12-Channel Fibre Channel Arbitrated Loop Switch, the VSC120 can disconnect a disk drive from the loop, perform diagnostics, and report status to the host without interrupting data flow to other resources within the enclosure.
NYSE:A) today announced the results of a successful 4 Gb/s Fibre Channel Arbitrated Loop (FCAL) interoperability test.