User`s guide

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I/O Module A physical card that is installed in one of 15 slots in the chassis’ card bay.

There are two types of I/O module: Ethernet and Host Bus Adapter. The

Ethernet and Host Bus Adapter modules provide access to Ethernet and

Fibre Channel networks, respectively.

I/O Port A single port on an Ethernet module, a Host Bus Adapter module, or one of

the 24 InfiniBand server ports.

JBOD Just A Bunch of Disks. Very large storage arrays, capable of storing terabytes

and terabytes of data. Farms of JBODs connect through an FC SAN.Ina

JBOD each disk is visible to the SAN, assigned an address, and is treated as

an autonomous device even though the physical disks are located in the

same enclosure.

jitter For QoS the delta between packets on the receive side. Low jitter is

guaranteed by having a low-latency queue mechanism. In this way, a flow is

guaranteed service and packets are not held up (delayed) in buffers.

Kerberos Kerberos is a network authentication protocol. It is designed to provide

strong authentication for client/server applications by using secret-key

cryptography. Kerberos was developed in the Athena Project at the

Massachusetts Institute of Technology (MIT). The name is taken from Greek

mythology; Kerberos was a three-headed dog who guarded the gates of

Hades. Kerberos lets a user request an encrypted “ticket” from an

authentication process that can then be used to request a particular service

from a server.

LDAP The Lightweight Directory Access Protocol (LDAP) is an application

protocol for querying and modifying directory services running over

TCP/IP. A client starts an LDAP session by connecting to an LDAP server,

by default on TCP port 389. The client then sends operation requests to the

server, and the server sends responses in turn.