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Glossary
288 Web Tools Version 3.1.x/4.1.x User Guide
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.
ISL
Interswitch Link. a Fibre Channel link from the E_Port of one switch to the E_Port of another.
See also E_Port, cascade, ISL Trunking.
ISL Trunking
An HP feature that enables distribution of traffic over the combined bandwidth of up to four ISLs
(between adjacent switches), while preserving in-order delivery. A set of trunked ISLs is called a
trunking group; each port employed in a trunking group is called a trunking port.
See also Master Port.
IU
Information Unit. A set of information as defined by either upper-level process protocol definition
or upper-level protocol mapping.
JBOD
Just a Bunch Of Disks. Indicates a number of disks connected in a single chassis to one or more
controllers.
See also RAID.
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.
Key Pair
In public key cryptography, a pair of keys consisting of an entity's public and private key. The
public key can be publicized, but the private key must be kept secret.