The process used to recover a Horizon Security Server is almost identical to that used to perform an upgrade. The only difference is that when performing an upgrade the target server is typically in a usable state, and when doing a recovery a new server may be required. This section will provide one set of instructions that will cover both an upgrade or a recovery of a Horizon Security Server.

The simplest way to restore a Horizon Security Server is to simply reinstall the software using the steps provided earlier in this chapter, and re-pair the Security Server with the Horizon Connection Server.

The following steps outline how to restore a Horizon Security Server in a scenario where the previous one is unavailable, or how to upgrade an existing Security Server (steps that are specific to a recovery will be identified as such):

1. Generate a new Security Server pairing password using the process outlined earlier in this chapter.
2. Configure a new Security Server host using the same server name and IP address (only required for a recovery).
3. Log on to the Horizon Administrator console using an AD account that has administrative permissions within Horizon.
4. Open the View Configuration | Servers page within the console.
5. Select the Security Servers tab in the Servers window.

6. Verify which Security Server needs updating by reviewing the Version column. In the following screenshot, we can see that VIEWSE02 is running an older version of the View Security Server software (highlighted in red) and needs updating (only required for an upgrade):

7. Highlight the Security Server you wish to remove or upgrade, click on the More Commands option, and then click on the Prepare for Upgrade or Reinstallation... button as shown in the following screenshot:

8. Click on OK in the Warning window shown in the following screenshot to remove the Connection Server IPsec rules in preparation for the upgrade or reinstallation:

9. Install the Security Server software using the process outlined earlier in this chapter in the section titled Installing a Horizon Security Server. If performing an upgrade, the name of the Connection Server to pair with as shown in step 6 of that section should already be supplied.
10. Verify the Security Server settings in the Horizon Administrator console and test remote Horizon client connections.