HP NonStop G-Series - Manual (Page 280)

internal ServerNet X or Y fabric
The fabrics that link ServerNet devices within an HP NonStop" server.
See also fabric .
internet protocol (IP)
A data communications protocol that handles the routing of data through a network,
which typically consists of many different
subnetworks . IP routes data between source
and destination IP addresses .
I/O adapter module (IOAM)
A collection of modular components that provides I/O connectivity and can include
ServerNet switch boards, Fibre Channel ServerNet adapters (FCSAs), fans, and power
supplies. In the IOAM, each module is a logical entity that represents a single service
domain.
I/O adapter module enclosure (IOAM enclosure)
The sheet-metal carrier that is installed in a standard 19-inch rack and contains the IOAM
components.
I/O controller
The hardware logic that controls computer I/O operations for a particular set of devices,
such as disks, tapes, terminals, or communications lines.
See also ServerNet addressable controller (SAC) .
I/O enclosure
An HP NonStop" S-series system enclosure containing one module, which includes
ServerNet adapters, disk drives, components related to the ServerNet fabrics, and
components related to electrical power and cooling for the enclosure.
I/O multifunction (IOMF) CRU
A customer-replaceable unit (CRU) that connects an I/O enclosure to a processor
enclosure through a ServerNet cable and supplies power to the components within the
IOMF CRU as well as redundantly to the disk drives, SCSI terminators, and ServerNet
adapters in that enclosure. The IOMF CRU contains a
power supply , service processor , a
ServerNet router, an Ethernet controller, an external ServerNet port, and three SCSI
ServerNet addressable controllers (
S-SACs ) in a single unit.
I/O multifunction (IOMF) 2 CRU
A customer-replaceable unit (CRU) that connects an I/O enclosure to a processor
enclosure through a ServerNet cable and supplies power to the components within the
IOMF 2 CRU as well as redundantly to the disk drives, SCSI terminators, and ServerNet
adapters in that enclosure. The IOMF2 CRU contains a
power supply , service processor,
a ServerNet router 2, an Ethernet controller, three configurable ServerNet ports, and three