Hitachi AMS 2100 Hardware Manual page 300

an organization (and of the network nodes of an autonomous system)
into several subnets. Routers constitute borders between subnets.
Communication to and from a subnet is mediated by one specific port
of one specific router, at least momentarily. SNIA.
Switch
A network infrastructure component to which multiple nodes attach.
Unlike hubs, switches typically have internal bandwidth that is a
multiple of link bandwidth, and the ability to rapidly switch node
connections from one to another. A typical switch can accommodate
several simultaneous full link bandwidth transmissions between
different pairs of nodes. SNIA.
T
Target
Devices that receive iSCSI requests that originate from an iSCSI
initiator.
TOE
A dedicated chip or adapter that handles much of the TCP/IP processing
directly in hardware. TCP/IP transmission is inherently a CPU-intensive
operation. Therefore, using dedicated hardware that can operate in
parallel with the main processor allows for superior system
performance. Although all iSCSI HBAs have a TOE, a generic TOE only
implements TCP/IP, while an iSCSI HBA implements the iSCSI protocol
in addition to TCP/IP.
U
UPS
A backup power supply, which is mounted on the Hitachi Adaptable
Modular Storage Series unit to prevent shutdown of the unit even when
power stoppage or momentary power interruption occurs.
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Glossary–8
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Hitachi AMS 2100/2300 Storage System Hardware Guide
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