Zombie VMs and overprovisioned VMs are two types of inefficient VMs that can waste resources and increase costs in a Nutanix environment. Zombie VMs are VMs that are powered on but have no activity or utilization for a long period of time. Overprovisioned VMs are VMs that have more resources allocated than they actually need or use. Both types of VMs can be identified by adding predefined views to a report in Prism Central.

A predefined view is a template that defines what data is displayed and how that data is represented in a report. Prism Central provides several predefined views for different purposes, such as capacity planning, performance analysis, anomaly detection, and efficiency optimization.To add a predefined view to a report, go to Operations > Reports > New Report and select the desired view from the list1.

The Zombie VMs List view shows the list of zombie VMs in the environment based on the CPU usage, memory usage, disk IOPS, and network throughput metrics.The view also shows the amount of resources wasted by these VMs and the potential savings that can be achieved by deleting or resizing them2.

The Overprovisioned VMs List view shows the list of overprovisioned VMs in the environment based on the CPU usage, memory usage, disk IOPS, and network throughput metrics.The view also shows the amount of resources wasted by these VMs and the potential savings that can be achieved by resizing them3.

By adding these two views to a report, an administrator can identify inefficient VMs and take appropriate actions to optimize resource utilization and reduce costs.

Nutanix clusters are resilient to a drive, node, block, and rack failures because they use redundancy factor 2 by default, allowing Nutanix clusters to self-heal2.Failure scenarios can be thought of in terms of fault domains, which are the physical or logical parts of a computing environment or location that are adversely affected when a device or service experiences an issue or outage3.There are four fault domains in a Nutanix cluster: Disk, Node, Block, and Rack4. Block and Rack are two options that are available for expanding the failure domain level of a cluster.Block fault tolerance is enabled by default and ensures that data is replicated across different blocks in a cluster5.Rack fault tolerance has to be configured manually and ensures that data is replicated across different racks in a cluster4.

Port 389 is the default port for LDAP without SSL encryption. Port 636 is used for LDAP over SSL (LDAPS).Port 3268 and 3269 are used for Global Catalog (GC) and Global Catalog over SSL (GCSSL), respectively2.

To periodically send information about cluster efficiency via email to a set of users, the administrator can follow these steps:

Create a report in Prism Central that contains the relevant information about cluster efficiency.

Add a schedule to the report to generate and send the report via email to the set of users at a specified frequency.

This will ensure that the users receive regular updates about the cluster efficiency without the need for manual intervention.