vSZ on Azure is not showing full disk capacity after increasing the disk space

Summary

To increase the disk size for vSZ on Azure, the OS disk should be resized, not the data disk as data disk is not available to vSZ by design.

Question

A data disk (example 512 G) has been added to the Azure vSZ but "show disk" is displaying much less than it ( example 127 GB). What could be causing this and how to resolve it?

Customer Environment

vSZ-H running on Azure

Troubleshooting Steps

Verified the virtual instance was powered off while adding the disk space.
Tried rebooting vSZ but that did not help.

Resolution

Adding a "data disk" on Azure will not make itself available to the vSZ and therefore "show disk" will not show the disk size offered by the data disk. Instead, if the disk space needs to be resized, it should be done on the OS disk instead of the data disk.

Following are the steps that you can follow to re-size the OS disk from Azure Portal -

Important Note - You must take a VM backup before re-sizing the disk. Also, this's as per RUCKUS's best awareness of this procedure as of this writing. Please check Azure documentation for extra-assurance.

Gracefully shutdown the vSZ instance using CLI command "shutdown now"
Navigate to Azure Portal (https://portal.azure.com)
In the VM's left-hand menu, click on "Disks" under "Settings"
Identify the OS disk and click on it.
Click "Size + performance" under "Settings"
Scroll down the page to button, update the size to your requirement in the "Custom disk size" field
Save the changes and restart the VM
Verify the available disk from SZ CLI "show diskinfo" command

Article Number:
000014766

Updated:
April 28, 2025 09:09 AM (16 days ago)

Tags:
Installation, Troubleshooting, Known Issues and Workarounds, SmartCell Gateway

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