Hitachi Storage Navigator Modular 2 User Guide

Understanding IP addressesD–9
Hitachi Storage Navigator Modular 2 User’s Guide
• IPv6 multicasting is used on the local link to search for the array’s IPv6 
address. Prior to having Navigator 2 search for the array, configure the 
array and the computer in which Navigator 2 is installed to reside on 
the same link.
• If the computer where Navigator 2 is installed has two or more NICs 
connected to separate network segments, Navigator 2 can only access 
the LAN whose addresses were specified when...

D–10Understanding IP addresses
Hitachi Storage Navigator Modular 2 User’s Guide 

Glossary–1
Hitachi Storage Navigator Modular 2 User’s Guide
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Glossary
This glossary provides definitions of general storage networking 
terms as well as specific terms related to the technology that 
supports Hitachi Data Systems products. Click the letter of the 
glossary section to display that page. 

Glossary–2
Hitachi Storage Navigator Modular 2 User’s Guide
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1000BASE-T
A specification for Gigabit Ethernet over copper wire. The standard 
defines 1 Gbps data transfer over distances of up to 100 meters using 
four pairs of Category 5 balanced copper cabling and a 5-level coding 
scheme.
Array
A set of hard disks grouped logically together to function as one 
contiguous storage space. 
ATA
Advanced Technology Attachment, a disk drive implementation that 
integrates the...

Glossary–3
Hitachi Storage Navigator Modular 2 User’s Guide
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capacity refers to the maximum possible data transfer rate of a 
communications channel under ideal conditions.
Challenge Handshake Authentication Protocol
A security protocol that requires users to enter a secret for access.
CHAP
See Challenge Handshake Authentication Protocol.
command control interface (CCI)
Hitachis Command Control Interface software provides command line 
control of Hitachi array and software...

Glossary–4
Hitachi Storage Navigator Modular 2 User’s Guide
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Fabric
The hardware that connects workstations and servers to storage 
devices in a SAN. The SAN fabric enables any-server-to-any-storage 
device connectivity through the use of fibre channel switching 
technology.
FC
Fibre channel.
Firmware
Software embedded into a storage device. It may also be referred to as 
Microcode.
Full-duplex
The concurrent transmission and the reception of data on a single link.
Gbps...

Glossary–5
Hitachi Storage Navigator Modular 2 User’s Guide
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IP
Internet Protocol, specifies the format of packets and addressing 
scheme. Most networks combine IP with a higher-level protocol called 
Transmission Control Protocol (TCP), which establishes a virtual 
connection between a destination and a source.
IP address
An identifier for a computer or device on a TCP/IP network. Networks 
using the TCP/IP protocol route messages based on the IP address of 
the...

Glossary–6
Hitachi Storage Navigator Modular 2 User’s Guide
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Middleware
Software that connects two otherwise separate applications. For 
example, a middleware product can be used to link a database system 
to a Web server. Using forms, users request data from the database; 
then, based on the users requests and profile, the Web server returns 
dynamic Web pages to the user.
MIB
Message Information Block.
NIC
Network Interface Card, an expansion board in a computer that...

Glossary–7
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RAID 6
An extension of the RAID 5 array, that allows for two simultaneous 
drive failures without downtime or data loss.recovery point objective 
(RPO).
After a recovery operation, the recovery point objective (RPO) is the 
maximum desired time period, prior to a disaster, in which changes to 
data may be lost. This measure determines up to what point in time 
data should be recovered. Data changes preceding the...

Glossary–8
Hitachi Storage Navigator Modular 2 User’s Guide
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SMTP
Simple Mail Transfer Protocol, a protocol used to receive and store 
email data directly from email servers.
Software initiator
A software application initiator communicates with a target device. A 
software initiator does not require specialized hardware because all 
processing is done in software, using standard network adapters.
Storage Navigator Modular 2
A multi-featured scalable storage management...