Cisco UCS uses firmware obtained from and certified by Cisco to support the endpoints in a Cisco UCS domain. Each endpoint is a component in the Cisco UCS domain that requires firmware to function. The upgrade order for the endpoints in a Cisco UCS domain depends upon the upgrade path, but includes the following:
Cisco UCS Manager
Endpoints physically located on adapters, including NIC and HBA firmware, and Option ROM (where applicable) that can be upgraded through firmware packages included in a service profile
Endpoints physically located on servers, such as the BIOS, storage controller (RAID controller), and Cisco Integrated Management Controller (CIMC) that can be upgraded through firmware packages included in a service profile
See the required order of steps for your upgrade path to determine the appropriate order in which to upgrade the endpoints in your Cisco UCS domain.
Beginning with Cisco UCS, Release 1.4(1), Cisco is releasing firmware upgrades in multiple bundles, rather than one large firmware package. For more information see Firmware Image Management.
This document uses the following definitions for managing firmware:
Changes the firmware running on an endpoint to another image, such as a release or patch. Upgrade includes both update and activation.
Copies the firmware image to the backup partition on an endpoint.
Sets the firmware in the backup partition as the active firmware version on the endpoint. Activation can require or cause the reboot of an endpoint.
For Management Extensions and Capability Catalog upgrades, update and activate occur simultaneously. You only need to update or activate those upgrades. You do not need to perform both steps.
Firmware Image Management
Cisco delivers all firmware updates to Cisco UCS components in bundles of images. Cisco UCS firmware updates are available to be downloaded in the following bundles:
Cisco UCS Infrastructure Software Bundle
This bundle includes the following firmware images that are required to update the following components:
Cisco UCS Manager software
Kernel and system firmware for the fabric interconnects
I/O module firmware
Cisco UCS B-Series Blade Server Software Bundle
This bundle includes the following firmware images that are required to update the firmware for the blade servers in a Cisco UCS domain. In addition to the bundles created for a release, these bundles can also be released between infrastructure bundles to enable Cisco UCS Manager to support a blade server that is not included in the most recent infrastructure bundle.
Board controller firmware
Third-party firmware images required by the new server
Cisco UCS C-Series Rack-Mount Server Software Bundle
This bundle includes the following firmware images that are required to update components on rack-mount servers that have been integrated with and are managed by Cisco UCS Manager:
Storage controller firmware
You cannot use this bundle for standalone C-series servers. The firmware management system in those servers cannot interpret the header required by Cisco UCS Manager. For information on how to upgrade standalone C-series servers, see the C-series configuration guides.
Cisco also provides release notes, which you can obtain on the same website from which you obtained the bundles.
The firmware version terminology used depends upon the type of endpoint, as follows:
Firmware Versions in CIMC, I/O Modules, and Adapters
Each CIMC, I/O module, and adapter has two slots for firmware in flash. Each slot holds a version of firmware. One slot is active and the other is the backup slot. A component boots from whichever slot is designated as active.
The following firmware version terminology is used in Cisco UCS Manager:
The running version is the firmware that is active and in use by the endpoint.
The startup version is the firmware that will be used when the endpoint next boots up. Cisco UCS Manager uses the activate operation to change the startup version.
The backup version is the firmware in the other slot and is not in use by the endpoint. This version can be firmware that you have updated to the endpoint but have not yet activated, or it can be an older firmware version that was replaced by a recently activated version. Cisco UCS Manager uses the update operation to replace the image in the backup slot.
If the endpoint cannot boot from the startup version, it boots from the backup version.
Firmware Versions in the Fabric Interconnect and Cisco UCS Manager
You can only activate the fabric interconnect firmware and Cisco UCS Manager on the fabric interconnect. The fabric interconnect and Cisco UCS Manager firmware do not have backup versions, because all the images are stored on the fabric interconnect. As a result, the number of bootable fabric interconnect images is not limited to two, like the server CIMC and adapters. Instead, the number of bootable fabric interconnect images is limited by the available space in the memory of the fabric interconnect and the number of images stored there.
The fabric interconnect and Cisco UCS Manager firmware have running and startup versions of the kernel and system firmware. The kernel and system firmware must run the same versions of firmware.
Firmware Upgrade to Cisco UCS, Release 2.0
The firmware upgrade to Cisco UCS, Release 2.0 needs to be planned with scheduled maintenance windows for standalone fabric interconnects. With this firmware upgrade, you should expect the following data traffic interruptions:
With a cluster configuration, no data traffic disruption if the correct sequence of steps is followed. Failover between the fabric interconnects prevents the longer disruption required for the fabric interconnects and I/O modules to reboot.
With a standalone fabric interconnect, data traffic disruption of up to one minute for the servers to reboot and approximately ten minutes for the fabric interconnect and I/O module to reboot.
This firmware upgrade requires a combination of the following methods:
Direct upgrade at the endpoints. For a cluster configuration with two fabric interconnects, a direct upgrade can be minimally disruptive to data traffic. However, it requires that the Cisco UCS domain does not include firmware policies for those endpoints that you upgrade directly. You cannot avoid disruption to traffic in a Cisco UCS domain with only one fabric interconnect.
Direct upgrade is not available for all endpoints, including the server BIOS, storage controller, HBA firmware, and HBA option ROM. You must upgrade those endpoints through the host firmware package included in the service profile associated with the server.
Upgrades to server endpoints through service profiles that include a host firmware package, a management firmware package, or both. This method can be disruptive to data traffic and should be performed during a maintenance window.
Cautions, Guidelines, and Best Practices for Firmware Upgrades
Before you upgrade the firmware for any endpoint in a Cisco UCS domain, consider the following cautions, guidelines, and best practices:
The Cisco UCS Manager GUI does not allow you to choose options that a release does not support. If a Cisco UCS domain includes hardware that is not supported in the release to which you are upgrading, Cisco UCS Manager GUI does not display the firmware as an option for that hardware or allow you to upgrade to it.
Configuration Changes and Settings that Can Impact Upgrades
Depending upon the configuration of your Cisco UCS domain, the following changes may require you to make configuration changes after you upgrade. To avoid faults and other issues, we recommend that you make any required changes before you upgrade.
Overlapping FCoE VLAN IDs and Ethernet VLAN IDs Are No Longer Allowed with Cisco UCS Release 2.0
In Cisco UCS 1.4 and earlier releases, Ethernet VLANs and FCoE VLANs could have overlapping VLAN IDs. However, starting with Cisco UCS release 2.0, overlapping VLAN IDs are not allowed. If Cisco UCS Manager detects overlapping VLAN IDs during an upgrade, it raises a critical fault. If you do not reconfigure your VLAN IDs, Cisco UCS Manager raises a critical fault and drops Ethernet traffic on the overlapped VLANs. Therefore, we recommend that you ensure there are no overlapping Ethernet and FCoE VLAN IDs before you upgrade to Cisco UCS release 2.0.
If you did not explicitly configure the FCoE VLAN ID for a VSAN in Cisco UCS 1.4 and earlier releases, Cisco UCS Manager assigned VLAN 1 as the default FCoE VLAN for the default VSAN (with default VSAN ID 1). In those releases, VLAN 1 was also used as the default VLAN for Ethernet traffic. Therefore, if you accepted the default VLAN ID for the FCoE VLAN and one or more Ethernet VLANs, you must reconfigure the VLAN IDs for either the FCoE VLAN(s) on the VSAN(s) or the Ethernet VLAN(s).
For a new installation of Cisco UCS release 2.0, the default VLAN IDs are as follows:
The default Ethernet VLAN ID is 1.
The default FCoE VLAN ID is 4048.
After an upgrade from
Cisco UCS release 1.4, where VLAN ID 4048 was used for FCoE storage port native VLAN, to release 2.0, the default VLAN IDs are as follows:
The default Ethernet VLAN ID is 1.
The current default FCoE VLAN ID is preserved. Cisco UCS Manager raises a critical fault on the conflicting Ethernet VLAN, if any. You must change one of the VLAN IDs to a VLAN ID that is not used or reserved.
If a Cisco UCS domain uses one of the default VLAN IDs, which results in overlapping VLANs, you can change one or more of the default VLAN IDs to any VLAN ID that is not used or reserved. In release 2.0, VLANs with IDs from 3968 to 4047 are reserved.
VSANs with IDs in the Reserved Range are not Operational
A VSAN with an ID in the reserved range is not operational after an upgrade. Make sure that none of the VSANs configured in Cisco UCS Manager are in the reserved range, as follows:
If you plan to use FC switch mode in a Cisco UCS domain, do not configure VSANs with an ID in the range from 3040 to 4078.
If you plan to use FC end-host mode in a Cisco UCS domain, do not configure VSANs with an ID in the range from 3840 to 4079.
If a VSAN has an ID in the reserved range, change that VSAN ID to any VSAN ID that is not used or reserved.
All Connectivity May Be Lost During Upgrades if vNIC Failover and NIC Teaming Are Both Enabled
All connectivity may be lost during firmware upgrades if you have configured both Enable Failover on one or more vNICs and you have also configured NIC teaming/bonding at the host operating system level. Please design for availability by using one or the other method, but never both.
To determine whether you have enabled failover for one or more vNICs in a Cisco UCS domain, verify the configuration of the vNICs within each service profile associated with a server. For more information, see the Cisco UCS Manager configuration guide for the release that you are running.
Impact of Upgrade from a Release Prior to Release 1.3(1i)
An upgrade from an earlier Cisco UCS firmware release to release 1.3(1i) or higher has the following impact on the Protect Configuration property of the local disk configuration policy the first time servers are associated with service profiles after the upgrade:
After you upgrade the Cisco UCS domain, the initial server association proceeds without configuration errors whether or not the local disk configuration policy matches the server hardware. Even if you enable the Protect Configuration property, Cisco UCS does not protect the user data on the server if there are configuration mismatches between the local disk configuration policy on the previous service profile and the policy in the new service profile.
If you enable the Protect Configuration property and the local disk configuration policy encounters mismatches between the previous service profile and the new service profile, all subsequent service profile associations with the server are blocked.
Any servers that are already associated with service profiles do not reboot after the upgrade. Cisco UCS Manager does not report any configuration errors if there is a mismatch between the local disk configuration policy and the server hardware.
When a service profile is disassociated from a server and a new service profile associated, the setting for the Protect Configuration property in the new service profile takes precedence and overwrites the setting in the previous service profile.
Hardware-Related Guidelines and Best Practices for Firmware Upgrades
The hardware in a Cisco UCS domain can impact how you upgrade. Before you upgrade any endpoint, consider the following guidelines and best practices:
No Server or Chassis Maintenance
Do not remove the hardware that contains the endpoint or perform any maintenance on it until the update process has completed. If the hardware is removed or otherwise unavailable due to maintenance, the firmware update fails. This failure may corrupt the backup partition. You cannot update the firmware on an endpoint with a corrupted backup partition.
Avoid Replacing RAID-Configured Hard Disks Prior to Upgrade
Under the following circumstances, Cisco UCS Manager may scrub all data on a hard disk as part of the RAID synchronization process during an upgrade of the server firmware:
The hard disks in the server are configured for RAID.
One or more of the RAID-configured hard disks in the server are removed.
The hard disk or disks are replaced with hard disks that are configured with a pre-existing RAID and the local disk configuration policy included in the service profile on the server is not used to configure those hard disks.
The server firmware is upgraded, causing the server to reboot and Cisco UCS Manager to begin the RAID synchronization process.
If the original hard disks contained vital data that needs to preserved, avoid inserting new hard disks that are already configured for RAID.
Always Upgrade Cisco UCS Gen-2 Adapters through a Host Firmware Package
You cannot upgrade Cisco UCS Gen-2 adapters directly at the endpoints. You must upgrade the firmware on those adapters through a host firmware package.
The firmware on the Cisco UCS 82598KR-CI 10-Gigabit Ethernet Adapter (N20-AI0002), Intel-based adapter card, is burned into the hardware at manufacture. You cannot upgrade the firmware on this adapter.
Number of Fabric Interconnects
For a cluster configuration with two fabric interconnects, you can take advantage of the failover between the fabric interconnects and perform a direct firmware upgrade of the endpoints without disrupting data traffic. However, you cannot avoid disrupting data traffic for those endpoints which must be upgraded through a host or management firmware package.
For a standalone configuration with a single fabric interconnect, you can minimize the disruption to data traffic when you perform a direct firmware upgrade of the endpoints. However, you must reboot the fabric interconnect to complete the upgrade and, therefore, cannot avoid disrupting traffic.
Firmware- and Software-Related Best Practices for Upgrades
Before you upgrade any endpoint, consider the following guidelines and best practices:
No Partial Upgrades
We recommend that all endpoints in a Cisco UCS domain be upgraded to the same firmware release. New functionality and changes within a firmware release for one endpoint may have dependencies upon the same functionality and changes within another endpoint. Therefore, a mix of firmware releases may cause performance or other issues during ordinary usage or may cause the update to fail.
Determine Appropriate Type of Firmware Upgrade for Each Endpoint
Some endpoints, such as adapters and the server CIMC, can be upgraded through either a direct firmware upgrade or a firmware package included in a service profile. The configuration of a Cisco UCS domain determines how you upgrade these endpoints. If the service profiles associated with the servers include a host firmware package, upgrade the adapters for those servers through the firmware package. In the same way, if the service profiles associated with the servers include a management firmware package, upgrade the CIMC for those servers through the firmware package.
Upgrades of a CIMC through a management firmware package or an adapter through a firmware package in the service profile associated with the server take precedence over direct firmware upgrades. You cannot directly upgrade an endpoint if the service profile associated with the server includes a firmware package. To perform a direct upgrade, you must remove the firmware package from the service profile.
Do Not Activate All Endpoints Simultaneously in Cisco UCS Manager GUI
If you use Cisco UCS Manager GUI to update the firmware, do not select ALL from the Filter drop-down list in the Activate Firmware dialog box to activate all endpoints simultaneously. Many firmware releases and patches have dependencies that require the endpoints to be activated in a specific order for the firmware update to succeed. This order can change depending upon the contents of the release or patch. Activating all endpoints does not guarantee that the updates occur in the required order and can disrupt communications between the endpoints and the fabric interconnects and Cisco UCS Manager. For information about the dependencies in a specific release or patch, see the release notes provided with that release or patch.
Impact of Activation for Adapters and I/O Modules
During a direct upgrade, you should configure Set Startup Version Only for an adapter. With this setting, the activated firmware moves into the pending-next-boot state, and the server is not immediately rebooted. The activated firmware does not become the running version of firmware on the adapter until the server is rebooted. You cannot configure Set Startup Version Only for an adapter in the host firmware package.
If a server is not associated with a service profile, the activated firmware remains in the pending-next-boot state. Cisco UCS Manager does not reboot the endpoints or activate the firmware until the server is associated with a service profile. If necessary, you can manually reboot or reset an unassociated server to activate the firmware.
When you configure Set Startup Version Only for an I/O module, the I/O module is rebooted when the fabric interconnect in its data path is rebooted. If you do not configure Set Startup Version Only for an I/O module, the I/O module reboots and disrupts traffic. In addition, if Cisco UCS Manager detects a protocol and firmware version mismatch between the fabric interconnect and the I/O module, Cisco UCS Manager automatically updates the I/O module with the firmware version that matches the firmware in the fabric interconnect and then activates the firmware and reboots the I/O module again.
Select Ignore Compatibility Check When Upgrading
During a direct upgrade to a newer release, we recommend that you choose Ignore Compatibility Check. Newer releases may have incompatible code with older releases. This option ensures that the upgrade can proceed and avoids compatibility issues.
Disable Call Home before Upgrading to Avoid Unnecessary Alerts (Optional)
When you upgrade a Cisco UCS domain, Cisco UCS Manager restarts the components to complete the upgrade process. This restart causes events that are identical to service disruptions and component failures that trigger Call Home alerts to be sent. If you do not disable Call Home before you begin the upgrade, you can ignore the alerts generated by the upgrade-related component restarts.
Outage Impacts of Direct Firmware Upgrades
When you perform a direct firmware upgrade on an endpoint, you can disrupt traffic or cause an outage in one or more of the endpoints in the Cisco UCS domain.
Outage Impact of a Fabric Interconnect Firmware Upgrade
When you upgrade the firmware for a fabric interconnect, you cause the following outage impacts and disruptions:
The fabric interconnect reboots.
The corresponding I/O modules reboot.
Outage Impact of a Cisco UCS Manager Firmware Upgrade
A firmware upgrade to Cisco UCS Manager causes the following disruptions:
Cisco UCS Manager GUI—All users logged in to Cisco UCS Manager GUI are logged out and their sessions ended. Any unsaved work in progress is lost.
Cisco UCS Manager CLI—All users logged in through telnet are logged out and their sessions ended.
Outage Impact of an I/O Module Firmware Upgrade
When you upgrade the firmware for an I/O module, you cause the following outage impacts and disruptions:
For a standalone configuration with a single fabric interconnect, data traffic is disrupted when the I/O module reboots. For a cluster configuration with two fabric interconnects, data traffic fails over to the other I/O module and the fabric interconnect in its data path.
If you activate the new firmware as the startup version only, the I/O module reboots when the corresponding fabric interconnect is rebooted.
If you activate the new firmware as the running and startup version, the I/O module reboots immediately.
An I/O module can take up to ten minutes to become available after a firmware upgrade.
Outage Impact of a CIMC Firmware Upgrade
When you upgrade the firmware for a CIMC in a server, you impact only the CIMC and internal processes. You do not interrupt server traffic. This firmware upgrade causes the following outage impacts and disruptions to the CIMC:
Any activities being performed on the server through the KVM console and vMedia are interrupted.
Any monitoring or IPMI polling is interrupted.
Outage Impact of an Adapter Firmware Upgrade
If you activate the firmware for an adapter and do not configure the Set Startup Version Only option, you cause the following outage impacts and disruptions:
The server reboots.
Server traffic is disrupted.
Summary of Steps for Upgrading from Release 1.2
If you do not follow this order, the firmware upgrade may fail and the servers may experience communication issues with Cisco UCS Manager.
The order of steps in this document and the recommended options minimize the disruption to data traffic. Therefore, when you upgrade from any version of Release 1.2, upgrade the components in the following order.
Download the following firmware images:
Cisco UCS Infrastructure Software Bundle—Required for all Cisco UCS domains.
Cisco UCS B-Series Blade Server Software Bundle—Required for all Cisco UCS domains that include blade servers.
Cisco UCS C-Series Rack-Mount Server Software Bundle—Only required for Cisco UCS domains that include integrated rack-mount servers. This bundle contains firmware to enable Cisco UCS Manager to manage those servers and is not applicable to standalone C-Series rack-mount servers.
(Optional) Disable Call Home—If the Cisco UCS domain includes Call Home or Smart Call Home, disable Call Home to ensure you do not receive unnecessary alerts when Cisco UCS Manager restarts components.
Update adapters, CIMC, and IOMs—If you prefer, you can upgrade the adapters in a host firmware package as part of the last upgrade step.
Activate adapters—Choose Ignore Compatibility Check and Set Startup Version Only when performing this step.
Activate CIMC—Choose Ignore Compatibility Check when performing this step.
Activate Cisco UCS Manager—Choose Ignore Compatibility Check when performing this step.
Activate I/O modules—Choose Ignore Compatibility Check and Set Startup Version Only when performing this step.
Activate subordinate fabric interconnect—Choose Ignore Compatibility Check when performing this step.
To avoid control plane disruption, manually failover the primary fabric interconnect to the fabric interconnect that has already been upgraded.
Verify that the data path has been restored.
Activate primary fabric interconnect—Choose Ignore Compatibility Check when performing this step.
Update management firmware package(s) for servers—You do not need to perform this step if you updated and activated the CIMC on the servers directly.
Update host firmware package(s) for servers—Must be the last firmware upgraded. We recommend that you upgrade the board controller firmware during this step to avoid an additional reboot of servers with that firmware. You must upgrade the following firmware in a host firmware package:
(Optional) Enable Call Home—If you disabled Call Home before the upgrading the firmware, enable Call Home.