Netapp NS0-194 Dumps Questions Answers

A disk/shelf count mismatch AutoSupport message indicates that nodes in the cluster do not agree about visible disks or shelves, so the first areas to inspect are drive paths and SAS cabling. Drive paths reveal whether each controller can see the expected disks through the expected redundant routes. SAS cabling is a common physical cause because a missing, crossed, loose, or failed cable can make one path or shelf segment disappear from one controller's view. IOM firmware and drive firmware can matter in broader shelf troubleshooting, but a count mismatch is primarily about visibility and pathing, not code level on a disk or module. The support engineer should validate multipath HA, shelf stack cabling, port connections, and path status before replacing hardware. Correct path redundancy is essential because ONTAP expects consistent shelf and disk inventory across the HA pair or cluster. References/topics: AutoSupport disk/shelf count mismatch, SAS cabling, drive path validation, multipath HA, and shelf visibility troubleshooting.

The NetApp Deployment Engine for NetApp HCI requires a minimum of two compute nodes. NetApp HCI is built around independent compute and storage resources, and the deployment engine validates the minimum configuration before allowing an installation workflow to proceed. One compute node is not sufficient because the platform is designed to provide a resilient hypervisor environment and to separate compute lifecycle operations from storage resource provisioning. Three or four compute nodes may be common in larger deployments, but they are not the minimum requirement for the deployment engine. The exam wording asks for compute nodes, not total nodes in the HCI environment, so the answer must focus only on the compute-node requirement. The support engineer should distinguish this from the storage-node minimum and from general vSphere cluster sizing. References/topics: NetApp HCI deployment prerequisites, NetApp Deployment Engine validation, minimum compute-node requirements, and HCI installation planning.

NDMP is the correct technology when a customer must create physical hard copies of transaction data for off-site regulatory storage. NDMP enables ONTAP data to be backed up directly to tape through a supported backup application, and tape is the typical medium for physical removable copies. SnapVault is disk-to-disk backup and retention; it is excellent for secondary ONTAP protection but does not inherently create physical hard copies. SVM DR replicates an SVM for disaster recovery and is not a physical-copy mechanism. FlexCache accelerates access to remote data and is not a regulatory backup technology. The phrase 'physical hard copies off site' is the key discriminator. A support engineer should map this to tape backup workflows, NDMP configuration, qualified tape devices, and backup software integration. For regulatory retention that requires removable media, NDMP is the NetApp-supported data transfer framework. References/topics: ONTAP NDMP, tape backup, off-site physical media retention, backup application integration, and regulatory data protection.