Nutanix NCP-US - Nutanix Certified Professional – Unified Storage (NCP-US) v6 exam

To add additional volumes to a VM that is mapped to a VG, you need to add more vDisks to that VG1. vDisks are virtual disks that reside on Storage Containers2.

To maintain data protection for a VM that is assigned to a Protection Domain (PD), you need to add any new vDisks to the same Consistency Group (CG) as the existing ones3. A CG is a subset of entities in a PD that are snapshotted in a crash-consistent manner2.

https://www.nutanix.com/architecture

 Nutanix volume groups are collections of vDisks that can be exposed to virtual machines or physical hosts using iSCSI protocol. Nutanix volume groups have a shared attribute that allows multiple VMs to access them concurrently.

In the step for attach the volume group to the RAC VMs, he must create it with an attribute of shared = true. This is because if the volume group is not created with shared = true, then only one VM can access it at a time, which would prevent Oracle RAC from working properly.

According to Encryption-Files | Nutanix Community1, SMB3 message encryption is a feature that encrypts messages on the file server side and decrypts them on the client side. However, clients that do not support encryption (Linux, Mac, windows 7) cannot access a share with encryption enabled.

According to Nutanix Support & Insights2, Nutanix Files supports SMB3 encryption for SMB3 client-server traffic. This means that only clients that support SMB3 protocol can access encrypted shares.

Therefore, if the users are accessing the shares from Linux desktops, they will not be able to access them because Linux does not support SMB3 encryption.

https://portal.nutanix.com/page/documents/solutions/details?targetId=NVD-2151-Unified-Storage:client-server-traffic-encryption.html

The administrator should avoid allocating over half the RAM on a host to a FSVM because the FSVM would cross NUMA node boundaries (option A).

NUMA (Non-Uniform Memory Access) is a memory architecture that divides the system memory into multiple regions that are assigned to different processors or cores.

If a FSVM crosses NUMA node boundaries, it will have to access memory from different regions, which will result in higher latency and lower performance for file operations.

To avoid this issue, the administrator should ensure that the FSVM memory allocation is within a single NUMA node boundary.

These are two essential requirements that an administrator must take into consideration when configuring separate client and storage networks.

these are some of the network requirements that an administrator must take into consideration for a new scale-out Files cluster when configuring and defining separate client and storage networks:

The client and storage networks must have different subnets12. This is because FSVMs use IP addresses from both networks, so they must be distinct to avoid conflicts.

Ensure there are enough IP addresses available for both networks12. This is because each FSVM requires one IP address from each network, plus one virtual IP address (VIP) per network per cluster. For example, if you have a three-node cluster with three FSVMs, you need six IP addresses for the client network (three for FSVMs and three for VIPs) and six IP addresses for the storage network (three for FSVMs and three for VIPs).

Ensure the client and storage networks use tagged VLANs if they share physical interfaces1. This is because VLAN tagging allows multiple logical networks to coexist on a single physical interface without interfering with each other.

Ensure there are no firewall rules or port blocking that prevent communication between clients, FSVMs, CVMs and Prism Element1. This is because Nutanix Files uses various ports for different protocols and services such as SMB, NFS, NTP, DNS etc.

File Analytics Events provides a searchable audit trail of all file operations performed by each user1. You can filter by user name, event type, file path, time range, etc.

https://next.nutanix.com/education-blog-153/your-complete-guide-to-nutanix-files-training-resources-40087

According to the Nutanix Files SMB Migration Guide1, Nutanix Files supports SMB protocol V2 and V31. SMB is a native protocol for Nutanix Files that allows file sharing between Windows clients and servers1.

ICAP stands for internet content adaption protocol and it is a standard protocol that allows you to integrate file servers with security products. Nutanix Files supports third-party vendors that use ICAP servers to scan files for malware and viruses.

https://www.nutanix.com/sg/support-services/training-certification/certifications/certification-details-nutanix-certified-professional-unified-storage-v6

According to Nutanix Volumes - Recommendations And Best Practices1, “Multiple disks per Nutanix node may also improve an application’s performance. For performance-intensive environments, we recommend using between four and eight disks per CVM for a given workload.” Therefore, the administrator should use multiple vDisks in the Volume Group to distribute the SQL workload across more disks and nodes.

https://next.nutanix.com/community-blog-154/scaling-up-vm-storage-performance-on-ahv-volume-group-load-balancer-28063