Hardware and Software Requirements

Before attempting to install or remove the LifeKeeper Microsoft IIS Recovery Kit, be sure that your configuration meets the following requirements:

• Operating System software.

  Refer to the LifeKeeper for Windows Support Matrix for a list of supported operating systems.

• LifeKeeper software. You must install the same version of the LifeKeeper software and any patches on each server. Please refer to the Release Notes for specific requirements.

• SIOS DataKeeper software (optional). If you plan to use IIS with replicated volumes rather than shared storage, you should install the SIOS DataKeeper for Windows software on each server.

• LifeKeeper IP Recovery Kit. You must have the LifeKeeper IP Recovery Kit installed on each server. All TCP/IP configuration requirements for the IP Recovery Kit also apply to the LifeKeeper Microsoft IIS Recovery Kit.

• IP network interface. Each server requires at least one Ethernet TCP/IP-supported network interface. In order for IP switchover to work properly, user systems connected to the local network should conform to standard TCP/IP specifications. Note: Even though each server requires only a single network interface, you should use multiple interfaces for a number of reasons: throughput requirements, elimination of single points of failure,network segmentation, and so forth.

• TCP/IP protocol.

  Each server requires TCP/IP to be installed and configured properly.

  • The two servers must be on the same LAN segment (that is, no routers between the two systems).

  • Free IP addresses to create LifeKeeper hierarchies:

    • For each active Microsoft IIS site, you will need one switchable IP address to be shared between the active and standby IIS site.

    • If you plan to protect multiple Microsoft IIS sites, you will need additional IP addresses for each protected IIS resource.

• IIS Software.

  The IIS Recovery Kit supports the native version of IIS on any supported version of Microsoft Windows.

Microsoft IIS software, IIS server roles, FTP feature or SMTP feature must be installed and configured prior to configuring LifeKeeper and the LifeKeeper Microsoft IIS Recovery Kit. The same version should be installed on each server. Please refer to IIS Required Roles and Role Services and Features for requirements that must be installed on each server.