Question 1

You have a new VMware vSphere cluster with ESXI 7.0U2 hosts. The hosts are connected to a 4-node AFF A400 NetApp ONTAP 9.8 cluster with FC LUNs. You have a requirement to identify and follow I/Os from each VM on the shared FC LUN-backed datastores for troubleshooting purposes.

In this scenario, which VMware feature Is supported by ONTAP software to accomplish this task?

ANetwork I/O Control (NIOC)

BVirtual machine ID (VMID)

CStorage I/O Control (SIOC)

DvSphere Cluster Services (vCLS)

Answer : B

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.Reference:1: Virtual Storage Console for VMware vSphere | NetApp Documentation2: How to use Virtual Storage Console (VSC) to monitor the performance of virtual machines - NetApp Knowledge Base

Question 2

Your customer installed the shelf firmware for their NS224 shelf over a week ago, and the firmware has not upgraded on shelf 1 module B. The customer wants to know what the next steps would be to get the firmware upgraded after verifying that the shelf firmware is indeed loaded onto the system.

Which step would you perform to complete the firmware upgrade?

AReseat the NSM100 module.

BReseat the disk in Bay 0.

CPower cycle the shelf.

DReseat the PSU of the shelf.

Answer : A

The question refers to a scenario where the shelf firmware for an NS224 shelf has not been upgraded on one of the NVMe shelf modules (NSM) after a week of installation.

The NSM is responsible for managing the communication between the drives and the I/O modules (IOM) in the shelf1.

The shelf firmware for the NSM is automatically updated when the NSM is inserted into the shelf or when the system is rebooted2.

If the automatic update does not work, the manual update process involves reseating the NSM, which means removing it from the shelf and inserting it back3.

Reseating the NSM triggers the firmware update and also resets the NSM's state3.

The other options are not correct, because:

B)Reseating the disk in Bay 0 will not affect the NSM firmware update, as the disk is not connected to the NSM1.

C)Power cycling the shelf will disrupt the I/O operations and may cause data loss or corruption4.

D)Reseating the PSU of the shelf will not affect the NSM firmware update, as the PSU is not connected to the NSM1.Reference:

NS224 NVMe drive shelf overview - NetApp

Shelf firmware update process - NetApp

Module firmware upgrade stuck on NS224 shelf - NetApp Knowledge Base

Power cycle a disk shelf - NetApp

Question 3

After users start reporting the Inability to create new flies in a CIFS share, you find EMS events for wafl.dir.size.max logged for the volume of the SVM to which the share points.

In this scenario, which action should you take to solve this issue?

ADelete unneeded files from the directory.

BMove the volume to a different aggregate.

CIncrease the maximum number of files for the volume.

DIncrease the maximum directory size for the volume.

Answer : D

The wafl.dir.size.max event occurs when a directory has reached its maximum directory size (maxdirsize) limit, which prevents new file creation in that directory. The maxdirsize is a volume-level option that can be modified using thevolume modifycommand. To solve this issue, you should increase the maximum directory size for the volume that contains the CIFS share, as long as it does not exceed 3% of the physical memory. Alternatively, you can reorganize the directory structure to avoid having too many files in one directory.Reference=

Max Directory size error - NetApp Knowledge Base

How to identify the target directory of wafl.dir.size.warning - NetApp Knowledge Base

Post about wafl.dir.size.max | Source.kohlerville.com

WAFL Max dirsize | uadmin

Question 4

You have connection Issues from a Linux host to an AFF A400 FC LUN. You are asked by support to run the NetApp sanlun command to provide troubleshooting information.

Which NetApp software package must be installed on the host?

AVirtual Storage Console

BInventory Collect Tool

CHost Utilities package

DSnapDrive for UNIX

Answer : C

= The NetApp sanlun command is a tool that returns information about the LUNs mapped to your host, multipathing, and information necessary to create initiator groups. It is part of the Linux Unified Host Utilities package, which also includes other tools to manage NetApp storage, such as failover policies and physical paths. To run the sanlun command, you must install the Host Utilities package on your Linux host. The other options are not relevant for this scenario, as they are either not required or not compatible with the Linux host.Reference=Install Linux Unified Host Utilities 7.1,SAN Toolkit

Question 5

After a normal power down of both nodes for building maintenance, Node01 of a 2-node cluster cannot be powered back up; however, all disk shelves are powered.

Which action should be performed to bring the cluster online and allow Node02 to serve data?

ARecreate the cluster with the system configuration recovery cluster recreate -from node command.

BReboot the node With the system node reboot -node Node02 -bypass-optimization true command.

CPerform a takeover with the storage failover takeover -ofnode Node01 -option force command.

DReinitialize the cluster with option 4a from the boot menu.