Table of Contents
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1-4
Table 1-1
VSU-7500 Component Descriptions
Item
Description
1
Redundant hot-swappable cooling fans
2
Status indicator
3
AC power receptacle
4
USB0 port (reserved for future use)
5
Fault indicator
6
Redundant hot-swappable power supplies
7
AC power switches
8
Console RS-232 port
9
Auxiliary RS-232 port (for factory test purposes only)
10
USB1 interconnect port (reserved for future use)
11
Ethernet port activity indicators (2 for each Ethernet port)
12
Secondary Public 10/100BASE-T Ethernet port
13
Secondary Private 10/100BASE-T Ethernet port
14
Primary Public 10/100BASE-T Ethernet port
15
Primary Private 10/100BASE-T Ethernet port
Redundant Power Supplies
The VSU-7500 includes redundant power supply modules. If one fails, the
second power supply instantly takes over, without disrupting the operation of the
unit. Concurrently, an audible alarm sounds, the green status LED indicator on
the power supply subsystem goes off, and an error message is sent to the console
port. In addition, SNMP trap and syslog error messages are sent to the
management station.
The power supply modules are hot-swappable and can be replaced without
interrupting services by powering down the VSU-7500. Refer to Chapter 4,
Troubleshooting, for instructions on replacing a defective power supply module.
Redundant Cooling Fans
System reliability is increased by hardware redundancy of the main cooling
system, so a failure of either fan does not prevent the safe operation of the unit. If
a fan failure is detected, error messages are sent to the console port and
management workstation.
VSU-7500 User Guide
Introduction
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