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

After implementing a new subnet for all Nutanix services, it is necessary to rediscover the new target or reestablish file sessions. When Nutanix is configured with a new network subnet, all the services running on the Nutanix cluster need to communicate with each other over the new network. Rediscovering the new target or reestablishing file sessions allows Nutanix to start using the new IP addresses on the new subnet, ensuring that communication between the different Nutanix services is established.

According to Nutanix Support & Insights1, “If you change the IP address of a Controller VM, hypervisor or IPMI interface on any node in a cluster that has iSCSI or Files enabled, you must rediscover the new target or reestablish Files sessions.” This is because “the iSCSI and Files services use static IP addresses for communication.”

According to the Nutanix Unified Storage v6 documents at nutanix.com1, Files uses two types of networks: client-side and server-side2. The client-side network is used for SMB and NFS access to Files shares, while the server-side network is used for internal communication between FSVMs3. To change the client-side network, you need to create a new managed virtual network on Prism Element and assign it to your FSVMs4. This will allow you to change the IP addresses of your FSVMs without affecting their connectivity to each other. 

According to Nutanix Cloud Platform to Deliver Strengthened Data Services for Unstructured and Structured Data1, “Nutanix Data Lens™ is a new unstructured data governance service that provides visibility into data usage and storage capacity across Nutanix Files deployments globally.” Therefore, the administrator can use Data Lens to run a report to understand cold, warm, and hot data across Files deployments.

https://www.nutanix.com/solutions/databases

Volume Groups (VGs) are collections of vDisks that can be attached to VMs1. vDisks are virtual disks that reside on Storage Containers2. Storage Containers are logical entities that provide storage services with different compression options3.

To use post-process compression for the file server and inline compression for the database components, you need to create two vDisks on different Storage Containers with different compression options. Then you need to attach those vDisks to different VGs.

https://next.nutanix.com/volumes-block-storage-171/configuration-for-volumes-vdisks-40537

These steps are based on a guide from Nutanix on how to troubleshoot pre-upgrade checks failure for Nutanix Files1. The guide states that one possible cause of this error message is that Nutanix files node (fsvms) might not be up or accessible1. The guide also suggests checking if Zookeeper services are running on all FSVMs as part of the troubleshooting process1.

iscsiadm is a command-line tool that allows you to manage iSCSI connections and devices. The error message shown in the exhibit indicates that there is a problem with connecting to the iSCSI target at x.x.x.250.

https://stackoverflow.com/questions/29954195/error-message-from-iscsiadm-while-trying-to-connect-to-a-iscsi-drive

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 whitelist feature that allows you to specify which clients can access them.

https://portal.nutanix.com/page/documents/solutions/details?targetId=BP-2049-Nutanix-Volumes:BP-2049-Nutanix-Volumes

• B. The administrator has a mistake when inputting the data services IP. This could cause the iscsiadm command to fail to discover or login to the iSCSI target at x.x.x.250. The administrator should verify that they have entered the correct data services IP for the Nutanix volume group.
• D. The client’s IQN is no longer in the whitelist of the affected VG. This could cause the iSCSI target to reject or ignore the connection request from the client. The administrator should check that they have added or updated the client’s IQN in the whitelist of the Nutanix volume group.

According to Nutanix Support & Insights1, Nutanix Files is a scale-out file storage solution that provides SMB and NFS file services to clients. Nutanix Files instances are composed of a set of VMs (called FSVMs) that run on Nutanix clusters.

According to Your Complete Guide to Nutanix Files Training Resources2, Prism Central is the interface used to deploy a new Files instance. Prism Central is a centralized management console that provides visibility and control across multiple Nutanix clusters and services.

According to Nutanix Files SMB Share Default Permission1, a standard share is created with default permissions for three built-in groups: Administrators, Users, and Backup Operators. This may not be suitable for hosting user data that needs to be evenly distributed across users.

According to Nutanix Support & Insights2, a distributed share is a type of SMB share that allows you to distribute files across multiple file servers for better performance and scalability. This can help optimize the I/O performance within the current environment.

According to Nutanix File and NFS Mount Examples3, a quota policy is a way to limit the amount of space that a user or group can consume on a share. This can help enforce the 1 TB limit on the share and ensure that each user gets an equal amount of space.

https://portal.nutanix.com/page/documents/solutions/details?targetId=TN-2041-Nutanix-Files%3ATN-2041-Nutanix-Files