Product manual

Galaxy G3G12 / G3G16 - Installation and Hardware Reference Manual
282 Section 8 Troubleshooting
8.11 Connection Problems
When you install your Galaxy3G product following the instructions in the Quick Start Guide and this
Product Manual, you should have little trouble getting your equipment to work the first time. But
connection problems can arise that are not the User's or Installer's fault. Every conceivable problem cannot
be covered in the documentation but some guidelines could be helpful.
Connection problems cause a majority of failures in almost any electrical system. While the installation of the
cables and components was correct, they don't function properly, or at all, because:
• A connector is dirty or corroded
• A connector is loose or damaged
• A cable looks OK outside but has an open circuit inside
• The wrong cable was used
Galaxy3Gs ship with a full set of new cables, as required for each specific model. Be sure to use these
components because: 1.) They are the proper ones for your RAID subsystem, 2.) They are in brand-new
condition, and 3.) You paid for them with the purchase of your Galaxy3G.
Serial Connections
Galaxy3G uses a serial connection for the command line interface (CLI) and the command line utility (CLU).
After you set the IP address, you can access the CLI and CLU through a network connection, also.
Normally, users prefer the Galaxy Array Manager because of its graphic user interface. But the CLI and CLU
can do the same jobs. And they will work when your network connection is down.
For Galaxy3G, you must use the CLI or CLU to set the Management Port IP address in order for Galaxy
Array Manager to connect with it. See “Setting up the Serial Connection” in chapter 2. This issue is
discussed further under Network Connections (below). See the “Making Serial Cable Connections” in
chapter 2 for more information on making the connection.
The CLI and CLU control and manage but they do not move data. They communicate through a null-modem
cable, supplied with the Galaxy3G. A straight-through serial cable will not work for this purpose. You may
choose not use the CLI or CLU often and want to disconnect and store the cable. Consider leaving it
connected, to be sure it will be there when you need it.
Network Connections
Each controller has an Ethernet RJ45 Management Port connector on the back of the enclosure. This is a
Gigabit Ethernet connector designed to connect to your network. The Galaxy3G becomes a node on your
network like any other PC, server or other component with an IP address.
Galaxy3G ships from the factory an IP address of 192.168.1.129. You must change this address to one that
will work with your network. You make the initial IP address setting using the CLI or CLU. See “Setting up
the Serial Connection”.
Connectivity LED Activity LED
Fig 8.11a Galaxy 3G RJ45 ethernet Management
port