Hitachi 9900 Hitachi Data Systems, eXtended SCSI Copy e-Copy, Fabric, Failover, Fast Ethernet

Hitachi Data Systems

eXtended SCSI Copy (e-Copy)

Extended SCSi is a command in the SCSI 3 specification that allows for the transfer of data without the involvement of the server. The Hitachi Freedom Storage™ Lightning 9900™ V Series implements this command, which is used by programs such as VERITAS® NetBackup™ to enable serverless and LANfree backup.

Fabric

A fabric is one of three Fibre Channel topologies. In a Fabric topology, Node Ports (N_Ports) are connected to Fabric Ports (F_Ports) on a switch. See also Switch.

Failover

Host, host bus adapter, cable, or controller failover is the routing of all transactions to a second controller when the first controller fails.

Fast Ethernet

Fast Ethernet or 100BaseT, defined by the IEEE 802.3 standards committee, provides a 100Mbit/sec standard that is compatible with existing 10BaseT installations, preserving the CSMA/CD media access control (MAC) protocol.

Fast Write

A write operation at cache speed that does not require immediate transfer of data to a disk drive. The system writes the data directly to cache, to nonvolatile storage, or to both. The data is then available for de-staging (writing to disk). Fast write reduces the time an application must wait for the I/O operation to complete.

FC

Fibre Channel.

FCA

Fibre Channel Adapter.

FC-AL

Fibre Channel Arbitrated Loop is the most dominant of the three topologies of Fibre Channel. Loops are a cost-effective way of connecting up to 127 ports in a network without the need for a switch. See also Fabric and Switch.

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