Create a Qumulo Core USB Installer Key

IN THIS ARTICLE

Outlines how to create a Qumulo Core USB Installer key to perform a clean install of Qumulo Core on your cluster

REQUIREMENTS

USB key (4GB minimum)
Qumulo Core USB installer image from the Qumulo Care team

IMPORTANT! Only proceed with the steps below if you intend to perform a clean install of Qumulo Core on your cluster. Reference the Perform a Clean Install of Qumulo Core article for considerations and additional details.

CREATE A USB INSTALLER KEY ON A MAC

1. Open the Terminal application and login as root:

sudo -s

2. Plug in your USB key and locate the device's disk label by running the following command:

diskutil list

EXAMPLE: Our USB key is /dev/disk3 in this sample output.

Screen_Shot_2018-10-31_at_3.28.28_PM.png

3. Use the device label from Step 2 in place of diskN with the following command (and subsequent commands) to unmount the USB key:

 diskutil unmountDisk /dev/diskN

4. Replace /path/to/imgfile in the command below with the image file's path on your node to write the Qumulo Core Installer image to the USB key:

dd if=/path/to/imgfile of=/dev/rdiskN bs=2m

IMPORTANT! You may encounter an "Operation not permitted" error due to a security mechanism that prevents Terminal from having full disk access in Mac OS versions 10.14 or above. To grant privileges, add the Terminal application to Full Disk Access under the Privacy tab in the System Preferences Security and Privacy settings and relaunch Terminal. Remove Full Disk Access for Terminal once the operation is complete.

5. Lastly, run the following command to eject the newly created Qumulo Core USB Installer key:

diskutil eject diskN

CREATE A USB INSTALLER KEY ON WINDOWS

Creating a Qumulo Core USB Installer key on Windows requires the use of a third party application like Win32 Disk Imager or dd for Windows to write the installer image to the USB key. Download and utilize any tool that offers this type of support to successfully create a Qumulo Core USB Installer key on Windows.

NOTE: If you are using the Win32 Disk Imager, a "Verification failed at sector: 2048" error will occur if you select "Verify Only." It's important to note that while Qumulo does not currently test or offer support with the above third party applications, customers that have encountered this error report no impact to the functionality of the Qumulo Core USB installer.

RESOLUTION

You should now be able to successfully create a Qumulo Core USB Installer key to perform a clean install of Qumulo Core on your cluster

ADDITIONAL RESOURCES

Perform a Clean Install of Qumulo Core on your Cluster

Create a Cluster with 2.7.10 and above

Win32 Disk Imager

dd for Windows

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