Always verify your hardware against the and the Cisco UCS Hardware and Software Compatibility Matrix before installation. Step-by-Step Installation Guide
Avoid these pitfalls that even senior admins make:
A: While possible, using the custom ISO is highly recommended for a clean installation. The ISO ensures all necessary, signed drivers are pre-installed in the correct order.
If you are managing an existing cluster, you can use the vCenter Lifecycle Manager to import the custom ISO, which is an increasingly preferred method for patching and upgrades. Top Recommended ISO Versions (2026) ESXi Version Modern UCS M6/M7 Servers Maximum Performance, High-Speed Networking ESXi 7.0 U3 Legacy M4/M5 Servers Legacy Stability
Log into your standalone server's Cisco Integrated Management Controller, open the KVM Console, and use the Virtual Media tab to map the ISO directly from your local machine. vmware esxi cisco custom iso top download
At the top of the version selection page, click on the tab.
Cisco also hosts these customized images directly on their support platform. Go to (cisco.com) and log in.
Pre-packages Common Information Model (CIM) providers so VMware vCenter can accurately monitor server health, fans, power supplies, and temperatures.
VMware ESXi is a bare-metal hypervisor that allows users to create and manage virtual machines on a physical host machine. Cisco, a leading networking company, offers a customized ISO image of ESXi that is tailored to support Cisco-specific hardware and features. The Cisco Custom ISO is designed to provide a seamless integration of Cisco devices with ESXi, enabling users to leverage the full potential of their Cisco equipment. Always verify your hardware against the and the
The build number must match or exceed the VMware minimum for your vCenter version if using vCenter management.
When using the Cisco Custom Image, follow these steps to ensure a smooth deployment:
Input your server model, CPU architecture, and desired ESXi target version into the matrix tool.
Go to My Downloads -> VMware vSphere -> Select your version (e.g., 8.0, 7.0). Find the ISO: Under the download list, select Custom ISOs . If you are managing an existing cluster, you
Click on and choose the appropriate ESXi major version.
Navigate to the tab and locate the specific server blade. Open the KVM Console for that blade. Use the Virtual Media menu to map the local ISO file.
In a UCS domain managed by UCS Manager, you would typically map the ISO to a service profile's virtual media and then boot the associated server from that media.