NetApp NS0-593 Exam Practice Test Instant Access

Question 1

Your customer is running a NetApp AFF A800 system with NetApp ONTAP 9.8 software and states that their NS224 shelf is not showing with the correct shelf ID. You analyze the data and the shelf shows an identification of ''1.SHFHUXXXXXXXXXX."

What is the cause of the reported Issue?

AThe shelf has been power cycled.

BA new shelf was added to the controller.

CThe shelf had a disk replaced too quickly.

DThe shelf was cabled Incorrectly.

Answer : D

According to the NetApp Knowledge Base, adding a second NS224 shelf to an existing stack can cause the first shelf ID to change to the serial number if the cables are not connected properly1.This can also result in a Medium Impact error message: Shelves with both connections via the same SAS path detected2. This situation is not normal for a NetApp AFF A800 system and can affect performance and availability.The cables should be reconnected according to the SAS cabling rules and concepts for shelves with IOM12/IOM12B modules3and the controller-to-stack cabling worksheet template for quad-pathed connectivity4.Reference=Shelves with both connections via the same SAS path detected,Adding a second NS224 shelf, changes first shelf ID to the serial number,SAS cabling rules and concepts - shelves with IOM12/IOM12B modules,Controller-to-stack cabling worksheet template for quad-pathed connectivity.

Question 2

A customer's storage administrator Informs you about the deactivated Automatic Switchover (AUSO) feature on their MetroCluster IP environment.

What Information would you tell your customer in this scenario?

AThe AUSO feature cannot be activated due to a non-mirrored aggregate.

BThe AUSO feature is not available in Metrocluster IP installations by design.

CA faulty link automatically deactivated the AUSO feature.

DThis is a configuration failure, you can activate that feature for the customer.

Answer : B

The AUSO feature is a MetroCluster functionality that enables an automatic switchover to the surviving site in the event of a disaster that affects one site1.

The AUSO feature is only available in MetroCluster FC configurations, which use Fibre Channel (FC) switches and FC-to-SAS bridges to connect the nodes and disk shelves across sites1.

MetroCluster IP configurations, which use Ethernet switches and network adapters to connect the nodes and disk shelves across sites, do not support the AUSO feature2.

Instead, MetroCluster IP configurations use the ONTAP Mediator service, which is a software component that monitors the health and connectivity of the MetroCluster nodes and initiates a Mediator-assisted unplanned switchover when a disaster occurs3.

The Mediator-assisted unplanned switchover is similar to the AUSO feature, but it requires the ONTAP Mediator service to be configured and running on a separate host3.

Therefore, you would tell your customer that the AUSO feature is not available in MetroCluster IP installations by design, and that they need to use the ONTAP Mediator service instead for disaster recovery.Reference:

1: Understanding MetroCluster data protection and disaster recovery, ONTAP MetroCluster Documentation Center

2: Differences among the ONTAP MetroCluster configurations, ONTAP MetroCluster Documentation Center

3: Configure the ONTAP Mediator service from a MetroCluster IP configuration, ONTAP MetroCluster Documentation Center

Question 3

Your customer mentions that they have accidentally destroyed both root aggregates in their two-node cluster.

In this scenario, what are two actions that must be performed? (Choose two.)

ARejoin the second node to the re-created cluster.

BRe-create the cluster from the local backup.

CInstall ONTAP from a USB device.

DRe-create the cluster from the remote backup.

Answer : A, C

If both root aggregates are destroyed in a two-node cluster, the cluster will be inoperable and the data will be inaccessible. To recover from this situation, you need to perform the following actions:

Install ONTAP from a USB device on one of the nodes. This will create a new root aggregate and a new cluster on that node.

Rejoin the second node to the re-created cluster. This will also create a new root aggregate on the second node and synchronize it with the first node.

Restore the cluster configuration and data from a backup, if available.Reference=

ONTAP 9 Documentation Center

Storage System Recovery Troubleshooting

Recovering from a root aggregate failure

Question 4

Refer to the exhibit.

Referring to the exhibit, what do you need to do to return the MetroCluster to a normal state?

AEnter the metroclustor switchback command on Site B.

BEnter the metrocluster switchback command on Site A.

CEnter the storage failover giveback command on Site B.

DEnter the storage failover giveback command on Site A.

Answer : B

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 themetrocluster switchbackcommand 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 themetrocluster switchbackcommand on Site B will not work, as Site B is the destination of the switchover, not the source3.

C)Entering thestorage failover givebackcommand 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 thestorage failover givebackcommand on Site A will not work, as this command is used for local HA failover within a cluster, not for MetroCluster switchover between clusters4.Reference:

Understanding MetroCluster data protection and disaster recovery - NetApp

Perform IP MetroCluster switchover and switchback - NetApp

Performing a switchback - NetApp

High-availability configuration - NetApp

Question 5

You created a new NetApp ONTAP FlexGroup volume spanning six nodes and 12 aggregates with a total size of 4 TB. You added millions of files to the FlexGroup volume with a flat directory structure totaling 2 TB, and you receive an out of apace error message on your host.

What would cause this error?

AThe maximum number of volume constituents has been reached in the ONTAP software.

BAll constituent volumes are full.

CThe inode limit is exceeded in the ONTAP software.

DThe maxdirsize Is exceeded in the ONTAP software.

Answer : D

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.Reference:1: FlexGroup volumes: Frequently asked questions | NetApp Documentation2: How to increase the maxdirsize of a FlexVol volume - NetApp Knowledge Base

Question 6

You have a NetApp ONTAP cluster consisting of four NetApp FAS8200 controllers with two NetApp CN1610 cluster switches running ONIAP 9.8 software. You are receiving several alert messages stating that the cluster network has degraded. After troubleshooting, you determine that the errors are being generated from Node 2, interface e0b.

In this scenario, what should you do first to solve this problem?

AReplace the Twinax cable between Node 2, Interface e0b. and the NetApp CN1610 switch.

BReplace the motherboard on Node 2.

CReplace both NetApp CN1610 switches.

DReplace the NetApp CN1610 switch that connects to Node 2, interface e0b.

Answer : A

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.Reference:

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

Question 7

A customer enabled NFSv4.0 on an SVM and changed the client mount from NFSv3 to NFSv4. Afterwards, the customer found that the directory owner was changed from root to nobody.

In this scenario, which statement is true?

AThe customer did not configure name services on the SVM.

BThe clients must be restarted to start using NFSv4.

CThe export policy is not configured properly.

DThe ID mapping domains do not match between the client and server.

Answer : D

NFSv4 is a network file system protocol that supports security, performance, and scalability features.NFSv4 uses ID mapping to ensure that the permissions of files and directories are consistent across different NFSv4 servers and clients1

ID mapping is the process of translating the user and group identifiers (UIDs and GIDs) of the local system to the user and group names (user@domain and group@domain) of the remote system, and vice versa.ID mapping is done by the idmapd service, which uses the /etc/idmapd.conf file to determine the domain name of the system2

ID mapping requires that the NFSv4 server and client have the same domain name configured in the /etc/idmapd.conf file.If the domain names do not match, the idmapd service cannot map the UIDs and GIDs to the user and group names, and the permissions of the files and directories will be shown as nobody:nobody, which is the default anonymous user3

Therefore, if a customer enabled NFSv4.0 on an SVM and changed the client mount from NFSv3 to NFSv4, and found that the directory owner was changed from root to nobody, the most likely cause is that the ID mapping domains do not match between the client and server.The customer should check and correct the /etc/idmapd.conf file on both systems, and restart the idmapd service and remount the NFSv4 share4

1: ONTAP 9 - Network File System (NFS) - The Open Group2: ONTAP 9 - NFSv4 and NFSv4.1 Enhancements - The Open Group3: NFSv4 mount incorrectly shows all files with ownership as nobody:nobody - Red Hat Customer Portal4: NFSv4 mountpoint shows incorrect ownerships as nobody:nobody in CentOS/RHEL - The Geek Diary

NetApp NS0-593 NetApp certified support engineer - ONTAP specialist Exam Practice Test