Nutanix Certified Associate Practice Exam

What may cause a storage access issue for a database server using a Nutanix Volume Group?

1. Port 9443 is blocked in the server firewall

2. A CVM serving the Volume Group has gone offline

3. Port 3260 has been blocked in the server firewall

4. The Volume Group Load Balancer has been disabled

The correct answer is: A CVM serving the Volume Group has gone offline

A storage access issue for a database server that utilizes a Nutanix Volume Group can occur when a Controller VM (CVM) serving the Volume Group has gone offline. Each Volume Group in Nutanix is managed by one or more CVMs, which handle the data access and management tasks. If a CVM goes offline, it disrupts the service availability of the Volume Group, leading to potential accessibility issues for the database server. The database relies on the CVMs to facilitate communication and access to the storage volumes, so any downtime in this infrastructure directly impacts the ability to read from or write to the storage. The other options, while they may pertain to networking and access configurations, do not directly relate to the core function of the Volume Group's availability as strongly as the CVM going offline. For instance, while blocked ports could lead to problems, the fundamental issue of storage access hinges more critically on the functionality of the CVM. Hence, when a critical CVM is down, it can cause immediate and tangible access issues for the resources that depend on it.