Cisco Cisco Firepower Management Center 4000

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Before you begin the update, you must thoroughly read and understand the release notes, which you can 
download from the Support Site. The release notes describe supported platforms, new features and 
functionality, known and resolved issues, and product compatibility. The release notes also contain 
important information on prerequisites, warnings, and specific installation and uninstallation 
instructions.

The following sections provide an overview of some of the factors you must consider when planning for 
the update.

You must make sure your appliances (including software-based devices) are running the correct version 
of the FireSIGHT System. The release notes indicate the required version. If you are running an earlier 
version, you can obtain updates from the Support Site.

Make sure the computers where you installed software-based devices are running the correct versions of 
their operating systems. The release notes indicate the required versions. For information on supported 
operating systems for virtual devices, see the FireSIGHT System Virtual Installation Guide. For 
information on supported operating systems for Sourcefire Software for  X-Series, see the Sourcefire 
Software for  X-Series Installation Guide.

Make sure you have enough free disk space and allow enough time for the update. When you update a 
managed device, the update requires additional disk space on the Defense Center. The release notes 
indicate space and time requirements.

Before you begin a major update, Cisco recommends that you delete any backups that reside on the 
appliance after copying them to an external location. Regardless of the update type, you should also back 
up current event and configuration data to an external location. Event data is not backed up as part of 
the update process.

You can use the Defense Center to back up event and configuration data for itself and the devices it 
manages; see 

.

Because the update process may affect traffic inspection, traffic flow, and link state, and because the 
Data Correlator is disabled while an update is in progress, Cisco recommends you perform the update in 
a maintenance window or at a time when the interruption will have the least impact on your deployment.

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The following diagram summarizes the update process.