Overview
KVM is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (such as Intel VT). It consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, such as kvm-intel.ko.
Firewall Management Center Virtual Requires 28 GB RAM for Upgrade (6.6.0+)
The Firewall Management Center Virtual platform has introduced a new memory check during upgrade. The Firewall Management Center Virtual upgrades to Version 6.6.0+ will fail if you allocate less than 28 GB RAM to the virtual appliance.
![]() Important |
We recommend you do not decrease the default settings: 32 GB RAM for most Firewall Management Center Virtual instances. To improve performance, you can always increase a virtual appliance’s memory and number of CPUs, depending on your available resources. |
As a result of this memory check, we will not be able to support lower memory instances on supported platforms.
Memory and Resource Requirements
You can run multiple virtual machines running unmodified OS images using KVM. Each virtual machine has private virtualized hardware: a network card, disk, graphics adapter, and so forth. See the Cisco Secure Firewall Threat Defense Compatibility Guide for hypervisor compatibility.
![]() Important |
When upgrading the Firewall Management Center Virtual, check the latest Release Notes for details on whether a new release affects your environment. You may be required to increase resources to deploy the latest version. |
When you upgrade, you add the latest features and fixes that help improve the security capabilities and performance of your deployment.
The specific hardware used for the Firewall Management Center Virtual deployments can vary, depending on the number of instances deployed and usage requirements. Each virtual appliance you create requires a minimum resource allocation—memory, number of CPUs, and disk space—on the host machine.
The following lists the recommended and default settings for the Firewall Management Center Virtual appliance on KVM:
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Processors
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Requires 4 vCPUs
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Memory
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Minimum required 28 / Recommended (default) 32 GB RAM
Important
The Firewall Management Center Virtual platform has introduced a new memory check during upgrade. The Firewall Management Center Virtual upgrades to Version 6.6.0+ will fail if you allocate less than 28 GB RAM to the virtual appliance.
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Networking
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Supports virtio drivers
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Supports one management interface
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Host storage per Virtual Machine
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The Firewall Management Center Virtual requires 250 GB
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Supports virtio and scsi block devices
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Console
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Supports terminal server via telnet
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