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EMC Connectrix DS-32B2 and ED-12000B Fabric OS Reference Manual
Glossary
I
Idle Continuous transmission of an ordered set over a Fibre Channel link
when no data is being transmitted, to keep the link active and
maintain bit, byte, and word synchronization.
Initiator A server or workstation on a Fibre Channel network that initiates
communications with storage devices. See also Ta rg et .
Integrated Fabric The fabric created by connecting multiple switches with multiple ISL
cables, and configuring the switches to handle traffic as a seamless
group.
IOD In-order delivery. A parameter that, when set, guarantees that frames
are either delivered in order or dropped.
ISL Interswitch link. A Fibre Channel link from the E_Port of one switch
to the E_Port of another. See also E_Port and Cascade.
Isolated
E_Port
An E_Port that is online but not operational due to overlapping
domain IDs or nonidentical parameters (such as E_D_TOVs). See also
E_Port.
IU Information unit. A set of information as defined by either
upper-level process protocol definition or upper-level protocol
mapping.
J
JBOD Just a bunch of disks. A number of disks connected in a single chassis
to one or more controllers. See also RAID.
K
K28.5 A special 10-bit character used to indicate the beginning of a
transmission word that performs Fibre Channel control and signaling
functions. The first seven bits of the character are the comma pattern.
See also Comma.
Kernel Flash Flash memory that stores the bootable kernel code and is visible
within the processor’s memory space. Data is stored as raw bits.