Ever in need to remove and reseat a Blade Server in the HP C-class Enclosure but not at Data center to do so? Do not worry, you can perform the same action by using HP Onboard Administrator Command Line interface. In this article, we will learn how to reset a server bay by momentarily removing all power to the blade server.
When the HP Onboard Administrator command ‘RESET SERVER [bay number]‘ is issued in an HP BladeSystem c-Class enclosure, the blade server which is installed in the corresponding bay will be reset. This is same as you are removing the blade server from your HP c-Class enclosure and reseating it at the same slot. HP OA firmware 1.30 and later support the RESET SERVER command and it will permit to cut power to HP Blade server for about 1-3 seconds.
If you ever worked with HP C-class blade server, in many instances you might have reset the blade server in the enclosure. This command will be a life saver if there is no technician available at the data center and you are working from a remote location, or even when you do not want to get up from your chair and physically remove the blade from the enclosure!
If you would like to know how to connect to the HP C-class Onboard administrator command line mode (CLI), then you should check our HP OA CLI tutorial provided below.
Follow above provided tutorial and login to HP Onboard Administrator Command Line Interface. Here, we will learn how to reset a server bay by momentarily removing all power to the blade. When you invoke the RESET SERVER command, it will completely Power OFF the blade slot and turns back ON after 1-3 seconds.
How to Reset a Blade Server using Command Line Interface:
As we have discussed above, we can use the command ‘RESET SERVER’ to reset the HP Blade Server. Unfortunately, I could not find this command listed in HP BladeSystem Onboard Administrator Command Line Interface User Guide (Version 3.50), but when I tried this command, it works!
When we run the ‘RESET SERVER‘ command, the blade server will lose the power momentarily as the e-fuse is tripped and reset. Please Use this command with caution as this will result in any activity on the server operating system being lost.
Let us look at the syntax of ‘RESET’ command:
Let’s see in Action:
Now I am going to reset a HP c-Class blade server which is populated in bay number 2 of the enclosure. So the command which needs to be executed at the HP Onboard Administrator CLI will be:
To execute the command, first you need to login HP OA CLI (connect via Telnet of SSH) and type the above provided command and Press Enter key. You may refer the below provided image for better understanding.
Once you execute ‘RESET SERVER’ command, you will receive a warning as shown below:
WARNING: Resetting the server trips its E-Fuse. This causes all power to be momentarily removed from the server. This command should only be used when physical access to the server is unavailable, and the server must be removed and reinserted.
Any disk operations on direct attached storage devices will be affected. I/O will be interrupted on any direct attached I/O devices. Entering anything other than ‘YES’ will result in the command not executing.
Do you want to continue ?
For your better understanding, please check the screenshot provided below.
Type YES at the prompt and press Enter key on your keyboard. Now you will receive a message stating “Successfully reset the E-Fuse for device bay 2”. Great, it works
Congrats, you have successfully reset the blade server which was installed in Bay number 2 of the HP c-Class enclosure. Dear Readers, please leave a comment if this article is helpful to you!
This command will be useful when you experience issues with EBIPA, iLO Hung session, iLO Remote console issues or if OA does not detect the blade server properly. Use this command wisely; it will save your day!
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