Accusys ExaRAID GUI - Manual (Page 35)

Introduction
1-10
• Virtual disk
A virtual disk is an storage entity that can service I/O access from LUNs or
from other virtual disks. It could be JBOD disk, logical disk, or volume. If a
virtual disk is part of other virtual disk, then it cannot be exported to LUNs.
• LUN mapping
A LUN mapping is a set of mapping relationships between LUNs and
virtual disks in the controller. Computer systems can access the LUNs
presented by the controller after inquiring host ports of the controller.
1.5 User Interfaces to Manage the RAID System
A variety of user interfaces and utilities are offered for managing the RAID
systems, and you may choose to use one or multiple of them that suit your
management purposes. Introduction to these interfaces and utilities is
described as below:
• Web-based GUI (chapter 2)
Web-based GUI is accessed by web browsers after proper setup of the
network interfaces. It offers an at-a-glance monitoring web page and full-
function system management capability in structured web pages. It is
advised to use the web-based GUI to fully unleash the power of RAID
system if you are a first-time user.
• SNMP Manager (section 2.9.2 Setting up the SNMP)
SNMP (Simple Network Management Protocol) is a widely used protocol
based on TCP/IP for monitoring the health of network-attached
equipments. The RAID controller is equipped with an embedded SNMP
Agent to support SNMP-based monitoring. You can use SNMP
applications (SNMP v1 or v2c-compliant) at remote computers to get
event notification by SNMP traps and watch the status of a RAID system.
• LCD Console (chapter 3)
LCD console is offered for quick configuration and for display of simplified
information and alerting messages. It is mostly for initializing network
setting to bring up the web-based GUI or for knowing the chassis status.
Using the LCD console for configuration is only advised when you know
clearly the preset configurations.
• CLI Commands (chapter 4)
Command line interface can be accessed by RS-232 port, TELNET, or SSH.
You can also use host-based CLI software to manage RAID systems by in-
band (FC/SAS/SCSI) or out-of-band (Ethernet) interfaces. It helps you to
complete configurations in a fast way since you can type in text
commands with parameters quickly without the need to do browse and
click. You may also use CLI scripts for repeating configurations when
deploying many systems.