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Cisco UCS C-Series Servers Upgrade Guide for Intel Xeon v3 Series CPUs
Downgrading From Intel Xeon v3 Series CPUs
Downgrading From Intel Xeon v3 Series CPUs
Note This downgrade procedure requires server downtime.
This section contains the following topics:
• Downgrade Scenario 1: UCSM-Managed Server, page 8
• Downgrade Scenario 2: Standalone Server, page 9
Downgrade Scenario 1: UCSM-Managed Server
This scenario assumes the following conditions:
• The server is managed by Cisco UCS Manager.
• The Cisco UCS Manager software is already at the minimum version or later (see Minimum
Software and Firmware Requirements, page 2).
• The server is already at the BIOS/Cisco IMC minimum version or later.
• The C-Series server is using the Intel Xeon v3 Series CPUs.
• The C-Series server is using DDR4 memory risers and DIMMs.
Use the following procedure to downgrade to earlier supported CPUs, memory risers, and DIMMs.
Step 1 Decommission and then power off the server.
Step 2 Replace the Intel Xeon v3 Series CPUs with the earlier supported CPUs.
Use the CPU replacement procedures in the Installation and Service guide for your server: Cisco UCS
C-Series Installation and Upgrade Guides.
Step 3 Replace the DDR4 memory risers and DIMMs with the earlier supported DDR3 memory risers and
DIMMs.
Use the memory riser and DIMM replacement procedures in the Installation and Service guide for your
server: Cisco UCS C-Series Installation and Upgrade Guides.
Step 4 Power on the server.
Step 5 Wait for Cisco UCS Manager to automatically discover and associate the server.
Note The Cisco IMC bundle, including the server Cisco IMC and BIOS, is backward-compatible with
earlier supported CPUs, so the following firmware downgrade steps are optional.
Step 6 Optional: Downgrade your server Cisco IMC.
Use the Cisco IMC firmware management procedures in the GUI or CLI Integrated Management
Controller Configuration Guide for your release.
Step 7 Optional: Downgrade your server BIOS.
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