Chapter 20. Designing for nondisruptive upgrades  293
The NDU happens automatically. You do not need to use the storage download acp 
command. The NDU can take 3 - 4 minutes to complete with up to five ACP modules running 
an NDU in parallel.
20.4.2  Upgrading ACP firmware manually
To upgrade ACP firmware manually, you must download the most recent firmware from the 
IBM Support site to the controllerâs /etc/acpp_fw directory. Use the storage download acp 
command to start the ACP firmware upgrade. It downloads the firmware to all ACPs in an 
active state unless a specific ACP is identified by using the storage download acp command.
As with other firmware downloads, ACP firmware download does not require the cluster to be 
enabled. ACP firmware download can be run during a takeover in an HA pair.
20.5  RLM firmware NDU
The RLM is a remote management card that is installed in N6000 and N7000 series 
controllers. It provides remote platform management capabilities, such as remote platform 
management, remote access, monitoring, troubleshooting, and logging. The RLM is 
operational regardless of the state of the controller, and is available if the controller has input 
power. The RLM firmware can be updated by the Data ONTAP command-line interface or the 
RLM command-line interface. Both procedures are nondisruptive upgrades of the RLM 
firmware.
Perform nondisruptive upgrades by downloading the latest RLM firmware from the IBM 
Support site to a web server on a network accessible by the controller. After the firmware is 
downloaded, use one of the following methods to download the firmware to the RLM:
ň° From the Data ONTAP command-line interface
From the controller console, run the following command to install the firmware:
software install http://web_server_name/path/RLM_FW.zip -f
The installation can take up to 30 minutes to complete. To update the files after 
installation, use the rlm update âf command.
ň° From the RLM command-line interface
Run the following command to install the firmware:
update http://web_server_ip_address/path/RLM_FW.tar.gz -f
Then, reboot the RLM by using the rlm reboot command.