Free Practice Questions for Netapp NS0-593 Exam

The question refers to a MetroCluster configuration, which is a disaster recovery solution that uses two physically separated, mirrored clusters1.

The exhibit shows a MetroCluster switchover scenario, where Site A has experienced a disaster and Site B has taken over the tasks of Site A2.

To return the MetroCluster to a normal state, you need to perform a MetroCluster switchback operation, which reverses the switchover and activates the original sync-source storage virtual machines (SVMs) on Site A3.

To perform a MetroCluster switchback, you need to enter the metrocluster switchback command on the cluster that was the source of the switchover, which is Site A in this case3.

The other options are not correct, because:

A. Entering the metrocluster switchback command on Site B will not work, as Site B is the destination of the switchover, not the source3.

C. Entering the storage failover giveback command on Site B will not work, as this command is used for local HA failover within a cluster, not for MetroCluster switchover between clusters4.

D. Entering the storage failover giveback command on Site A will not work, as this command is used for local HA failover within a cluster, not for MetroCluster switchover between clusters4. References:

Understanding MetroCluster data protection and disaster recovery - NetApp

Perform IP MetroCluster switchover and switchback - NetApp

Performing a switchback - NetApp

High-availability configuration - NetApp

= The NetApp Cloud Volumes ONTAP Release Notes provide the most up-to-date and accurate information about the storage limits for different cloud platforms, licenses, and configurations. The release notes also include details about supported features, known issues, and limitations for each version of Cloud Volumes ONTAP. References = Storage limits - NetApp, Storage limits | NetApp Documentation, Storage limits in AWS | NetApp Documentation, Storage limits in Azure | NetApp Documentation

 = The multiprotocol volume allows clients to access files using both NFS and SMB protocols. The NFS protocol is case-sensitive, meaning that Test.txt and TEST~1.TXT are two different files. The SMB protocol is case-insensitive, meaning that it treats uppercase and lowercase letters as the same when searching for a file. Therefore, when the user opened the file from a Windows system using SMB, the system could not distinguish between Test.txt and TEST~1.TXT and displayed one of them arbitrarily. This could lead to confusion and data loss if the user modified or deleted the wrong file. References = Client protocols; Multiprotocol NAS in NetApp ONTAP Overview and Best Practices, page 30-31.

A Twinax cable is a type of copper cable that is used to connect cluster ports to cluster switches1.

A cluster port is a network port that is configured for cluster communication and data access2.

A cluster switch is a network switch that is used to interconnect the nodes in a cluster and provide redundancy and load balancing3.

A cluster network is a network that enables cluster communication and data access between the nodes in a cluster and external clients4.

A cluster network can be degraded due to various reasons, such as misconfiguration, malfunction, or excessive link errors on the cluster ports or the cluster switches.

Link errors are errors that occur on the physical layer of the network, such as CRC errors, length errors, alignment errors, or dropped packets.

Link errors can indicate a problem with the cable, the switch port, the network interface card (NIC), or the cable connector.

In this scenario, the alert messages state that the cluster network has degraded and the errors are being generated from Node 2, interface e0b.

The first step to solve this problem is to replace the Twinax cable between Node 2, interface e0b and the NetApp CN1610 switch, as this could be the source of the link errors.

Replacing the cable could resolve the issue and restore the cluster network to a healthy state.

If replacing the cable does not solve the problem, then other steps may be required, such as checking the switch port, the NIC, or the cable connector, or replacing the switch or the motherboard. References:

1: Cluster network cabling, ONTAP 9 Documentation Center

2: Cluster ports, ONTAP 9 Documentation Center

3: Cluster switches, ONTAP 9 Documentation Center

4: Cluster network, ONTAP 9 Documentation Center

[5]: How to troubleshoot CLUSTER NETWORK DEGRADED error messages, NetApp Knowledge Base

[6]: Cluster network degraded due to high CRC errors on cluster ports, NetApp Knowledge Base

The maxdirsize is the maximum size of a directory in a FlexVol or FlexGroup volume. It is determined by the number of inodes allocated to the directory. If the directory contains more files than the maxdirsize can accommodate, then the ONTAP software will return an out of space error message to the host, even if the volume has enough free space. This can happen when a FlexGroup volume has a flat directory structure with millions of files, as the maxdirsize is not automatically adjusted for FlexGroup volumes12. References: 1: FlexGroup volumes: Frequentlyasked questions | NetApp Documentation 2: How to increase the maxdirsize of a FlexVol volume - NetApp Knowledge Base

The broken disk in Node03 is causing the cluster ring to be offline, which prevents the CIFS SVM from being accessible. The cluster ring is a distributed database that stores cluster configuration information and enables communication between cluster nodes. If the cluster ring is offline, the cluster cannot function properly and the CIFS SVM cannot serve data to clients. The other options are not relevant to the CIFS SVM connectivityissue. References = https://www.netapp.com/support-and-training/netapp-learning-services/certifications/support-engineer/

https://mysupport.netapp.com/site/docs-and-kb

The VMware feature that is supported by ONTAP software to identify and follow I/Os from each VM on the shared FC LUN-backed datastores is Virtual machine ID (VMID). VMID is a unique identifier assigned to each VM by the vCenter Server. ONTAP software can use VMID to map the VMs to the FC LUNs and provide visibility into the I/O performance and latency of each VM. This feature is also known as Virtual Storage Console (VSC) for VMware vSphere12. References: 1:Virtual Storage Console for VMware vSphere | NetApp Documentation 2: How to use Virtual Storage Console (VSC) to monitor the performance of virtual machines - NetApp Knowledge Base

 The iSCSI service must be enabled on the network interfaces that are used for iSCSI communication. If the iSCSI service is disabled on an interface, the incoming connection requests from the iSCSI initiator will be discarded and the event log will show the message “ISCSI: network interface identifier disabled for use; incoming connection discarded”. To enable the iSCSI service on an interface, you can use the System Manager or the CLI command network interface modify -vserver vserver_name -lif lif_name -data-protocol iscsi. References = Configure the iSCSI protocol with System Manager, [ONTAP 9 Network Management Guide]