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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.
Hitachi Data Sy s t e m s
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