Hardware and Software Requirements

This section lists the requirements for installing Instant Messaging software. Before you install, ensure you have met the minimum hardware and operating system requirements. JRE 1.4 is supported by both server and client. In addition, check for any product patches before you install.

The following hardware and software are required for this release of Instant Messaging software.

Server Operating System Requirements

This release of Sun Java System Instant Messaging supports the following platforms:

• Solaris^TM 9 (5.9) OS (SPARC® Platform Edition, x86 Platform Edition, and Opteron Platform Edition)

• Solaris^TM 10 OS (SPARC® Platform Edition, x86 Platform Edition, Opteron Platform Edition)

• Red Hat Enterprise Linux AS 2.1 and AS 3.0

A list of recommended patches for Solaris can be found at the following location:

http://sunsolve.sun.com

Server Software Requirements

This version of Instant Messaging is compatible with the following versions of other server software:

• Sun Java System Access Manager 6 2005Q4

• Sun Java System Application Server Enterprise Edition 8 2005Q4

• Sun Java System Calendar Server 6 2005Q4

• Sun Java System Directory Server 5 2005Q4

• Sun Java System Messaging Server 6 2005Q4

• Sun Java System Portal Server 6 2005Q4

• Sun Java System Web Server 6.1 2005Q4 SP4

Server Hardware Requirements

The minimum hardware requirements for installing Sun Java System Instant Messaging are as follows:

• Approximately 300 MB of free disk space for the software.

• Approximately 5K of disk space for each user.

• At least 256 MB of RAM. The amount of RAM needed depends on the number of concurrent client connections, and whether the server and multiplexor are deployed on the same host.

Client Operating System Requirements

This release supports the following client platforms:

• Solaris 9 and 10

• Microsoft Windows 98 or later (ME, NT (SP 6a), 2000, XP)

• Mac OS X 10.1 or later

• Red Hat Linux 7.2 or later

Client Software Requirements

This release of Instant Messaging supports any XMPP-compliant client in addition to Instant Messenger. The jabber.org website has a full list of XMPP-compliant clients.

On Windows, you can run Instant Messenger using the browser’s Java plug-in from the following browsers:

• Netscape 4.7x, 7 or later

• Mozilla 1.2 or later

• Internet Explorer 5.0 or later

If the client machine has Java 1.4 or a higher version installed, there are no additional requirements to use either Java Plug-in or Java Web Start. Netscape Navigator v7 as well as the recent versions of the Mozilla browser include Java v1.4 or higher. Internet Explorer does not include the latest version of Java. If you experience problems using the client with Java 1.4, upgrade to 5.0. JDK 5.0 is included with Sun Java System Instant Messaging.

If the client machine does not have Java v1.4 or a higher version installed, you need to install it. You can download and install Java v1.4. from the following location:

http://java.sun.com/j2se

HTML links can be exchanged over Instant Messenger and activated from the messenger by clicking them. When a link is activated, the messenger invokes a browser. Table 1 lists supported operating system and browser combinations.

Table 1 Supported Client OS and Browser Combinations

Operating System	Browser
Solaris	Netscape Communicator 4.7x or later
Red Hat Linux 7.x	Netscape 4.7
Red Hat Linux 8.0 or later	Mozilla 1.2 or later
Windows 98/ME/NT/2000/XP	no restrictions
Mac OS X	no restrictions

Client Hardware Requirements

Instant Messenger uses between 20 and 40 MB of memory on most platforms. You should estimate the memory requirement by including the requirements of other applications (including operating systems) used on the client machine. In most cases, at least 128 MB RAM is recommended in order to run Instant Messenger and other applications comfortably. This number becomes higher when using memory-intensive operating systems.