NCS-Core Exam Dumps - Nutanix NCS Professional Questions and Answers

https://portal.nutanix.com/page/documents/details?targetId=Web-Console-Guide-Prism-v5_10:wc-protection-domain-failback-disaster.html

The command ncli pd deactivate_and__destroy_vms name=<protection_domain_name> is a critical operation in managing Nutanix environments, particularly in scenarios involving disaster recovery and replication.

• This command deactivates the protection domain and deletes all VMs associated with that protection domain from the source site (Site A in this case). This operation is generally part of a planned migration or failover process where the VMs are intended to be run from the remote site (Site B).
• After this operation, the protection domain at Site A is no longer active, meaning it has been effectively removed along with its associated VMs, thus clearing the way for Site B to take over operations without conflict from the original site.

References:This action and its implications are covered under Nutanix disaster recovery and high availability strategies, detailed in both the Nutanix Bible and official Nutanix NCS-Core training materials, which discuss the management of protection domains and replication processes.

To foundation a cluster using ESXi as the hypervisor, the necessary components include:

• ISO image for ESXi: This is required to install ESXi on the nodes within the cluster.
• iso_whitelist.json: This file is crucial for the Foundation process as it lists the supported ISO images and their checksums to ensure the integrity and compatibility of the hypervisor ISO being used.

References:

• Nutanix Bible (https://www.nutanixbible.com), specifically sections discussing hypervisor installation and compatibility.
• Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), covering Foundation processes and required files.

In this scenario, the delay and packet loss during failover when one of the network cables is disconnected can be addressed by enabling "Portfast" on the switch ports connected to the Nutanix nodes. Portfast is a Cisco network switch feature that allows network switches to immediately bring ports into the forwarding state during connectivity changes, bypassing the usual listening and learning states of Spanning Tree Protocol (STP). This significantly reduces the time to re-establish network connectivity, thereby minimizing the packet loss during such failover events. Enabling Portfast is crucial for endpoints like servers where quick recovery from disconnections is necessary.References: Cisco Networking Academy materials on STP and Portfast, Nutanix Bible.

To meet the requirements of maximizing storage space savings while optimizing I/O performance for business-critical applications and general server workloads, enabling both compression and erasure coding on the storage containers is recommended. Compression reduces the data footprint on storage disks, while erasure coding provides data redundancy in an efficient manner, which not only saves space but also enhances data durability and I/O performance for read-intensive applications.References:

• Nutanix University - NCS-Core 6.8 Learning Path
• The Nutanix Bible, Storage Efficiency chapter (https://www.nutanixbible.com/)