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| Section | Objectives |
|---|---|
| Prism Central Management | - Cluster and Site Management - DR Monitoring and Operations |
| Data Protection and Backup Integration | - Snapshot Management - Backup Solutions Integration |
| Recovery Operations | - Recovery Plans and Orchestration - Test Recovery Workflows - Failover and Failback Procedures |
| Disaster Recovery Fundamentals | - DR Concepts (RPO, RTO, SLAs) - Business Continuity Principles |
| Nutanix Disaster Recovery Architecture | - Nutanix Leap Overview - Protection Domains - Replication Types (Sync/Async) |
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NEW QUESTION # 34
An administrator is managing a Nutanix environment via Prism Central and has two VMs running on AHV:
* " ERP-PROD " : A mission-critical VM protected by a Synchronous replication schedule (0 RPO) to a secondary site.
* " REPORTING-DEV " : A non-critical VM protected by an Asynchronous replication schedule (hourly RPO) to the same secondary site.
Following a corrupted application update, the administrator decides to manually recover both VMs locally.
What will be the outcome of this manual recovery attempt?
Answer: D
Explanation:
Nutanix manages data recovery operations differently depending on whether a virtual machine is in an asynchronous or synchronous replication state. For a standard Asynchronous VM like " REPORTING-DEV, " the local cluster takes periodic snapshots. If data corruption occurs, the administrator can perform an " In- place Restore " or " Revert " using a local recovery point. This is a standard procedure where the current vDisks are overwritten by the point-in-time data from the snapshot.
However, " ERP-PROD " is part of a Synchronous replication policy (0 RPO). This means the storage container it resides on is effectively " stretched " and locked in an active-active relationship with a remote cluster. Every write must be identical at both sites. If an administrator attempts to " Revert " a synchronous VM to a local snapshot, it would cause an immediate data mismatch between the primary and recovery sites, breaking the zero-RPO guarantee and potentially causing cluster-wide consistency issues. To protect data integrity, Prism Central typically grays out or blocks the " Revert " option for VMs currently in an active synchronous " Sync " state. To recover such a VM, an administrator would generally need to either " Clone " the snapshot to a new VM or temporarily move the VM into an asynchronous state by modifying the policy, thereby unlocking the ability to revert the data disks locally before re-enabling synchronization.
NEW QUESTION # 35
Two AHV clusters are 4 ms RTT apart. The business requires:
* 0 RPO
* Automatic failover
* No application performance degradation
* Hybrid HCI nodes with 100 TB capacity
What storage configuration must be validated before enabling synchronous replication?
Answer: D
Explanation:
Synchronous replication is a high-performance disaster recovery solution designed to provide a Zero Recovery Point Objective (RPO) by mirroring every write operation in real-time between two clusters.
Because the system must wait for the remote site to acknowledge every write before confirming the operation to the application, the underlying storage media must be capable of extremely low-latency I/O.
On hybrid clusters that utilize both Solid State Drives (SSDs) and Hard Disk Drives (HDDs), Nutanix mandates a minimum of one SSD per node to support synchronous replication. The SSD tier is used to store metadata and provide the high-speed " Oplog " where incoming writes are initially landed before being drained to the HDD tier. If a cluster were to attempt synchronous replication using only HDDs (Option D), the mechanical latency of the spinning disks combined with the network Round Trip Time (RTT) would cause severe application performance degradation, failing the business requirement. Even though the cluster has large capacity requirements (100 TB), the presence of an SSD tier is a technical prerequisite for the software to even enable the synchronous consistency feature. Therefore, ensuring at least one SSD exists in every node of the hybrid cluster is the critical storage validation step required before implementation.
NEW QUESTION # 36
An administrator is planning a scheduled maintenance window that will temporarily interrupt network connectivity between the primary and recovery sites. Several Tier 1 VMs are protected with a Synchronous replication Protection Policy. What must the administrator do before beginning the maintenance window to prevent these VMs from becoming unresponsive without making RPO changes?
Answer: A
Explanation:
Synchronous replication is designed for zero data loss by requiring that every write be acknowledged at both the primary and recovery sites before the application can proceed. This creates a " hard " dependency on the network link between the two clusters . If the network connectivity is interrupted (e.g., during scheduled maintenance), the primary cluster will be unable to receive acknowledgments from the remote site.
By default, if the synchronous link is broken, the primary cluster may pause I/O to the protected VMs to prevent data inconsistency, which would cause the VMs to become unresponsive to users. To prevent this during planned maintenance while ensuring that the VMs stay online at the primary site, the administrator should temporarily transition the protection mode. Changing the Protection Policy from " Synchronous " to " Asynchronous " (Option C) removes the real-time write-mirroring requirement. This allows the VMs to continue serving local I/O independently of the remote site ' s status. While this technically increases the RPO during the maintenance window, it ensures application availability. Once the maintenance is complete and network connectivity is restored, the administrator can change the policy back to Synchronous. The system will then perform a catch-up sync and return to the Zero-RPO state once the data at both sites is identical again. This operational maneuver is a standard best practice for managing " stretched " cluster environments during infrastructure updates.
NEW QUESTION # 37
An administrator plans to configure Cross Hypervisor Disaster Recovery (CHDR) to replicate VMs from an ESXi cluster to an AHV cluster using an Asynchronous replication schedule. Which component must be installed on the VMs to ensure successful migration and driver configuration during recovery?
Answer: A
Explanation:
Cross-Hypervisor Disaster Recovery (CHDR) allows for the seamless replication and failover of workloads between different hypervisor platforms, such as moving from VMware ESXi to Nutanix AHV. The primary technical challenge in CHDR is ensuring that the virtual machine has the correct storage and network drivers to boot on the new hypervisor. For instance, a VM running on ESXi uses VMware-specific drivers, while AHV requires Nutanix VirtIO drivers.
Nutanix Guest Tools (NGT) is the mandatory component that handles this translation process automatically.
When NGT is installed on a VM running on ESXi, it includes the necessary Nutanix drivers in a dormant state. During a failover to an AHV cluster, the Nutanix orchestration engine uses the NGT hooks to inject and activate these drivers, ensuring the VM can successfully recognize its virtual disks and network adapters upon power-on at the recovery site. Without NGT, the VM would likely suffer a " Blue Screen of Death " (BSOD) on Windows or a kernel panic on Linux due to the missing boot drivers. While manual VirtIO installation (Option A) is possible, NGT provides the integrated orchestration required for a reliable, automated BCDR workflow, making it the essential component for CHDR success.
NEW QUESTION # 38
An administrator notices that storage utilization continues to increase at both the primary and recovery sites after implementing a third-party backup solution that uses protection policies. Which configuration should be reviewed first?
Answer: D
Explanation:
Storage consumption in a BCDR environment is directly governed by two factors: the frequency of recovery points (RPO) and the length of time those points are kept (Retention). When a third-party backup solution integrates with Nutanix Protection Policies, it often takes over the management of the snapshot lifecycle.
If storage utilization is increasing unexpectedly at both sites, the most likely cause is that recovery points are not being expired or purged at the expected rate. The administrator should first review the retention settings within the backup solution. If the retention period is set too long, or if the backup software is failing to send the " delete " command to Prism after its local catalog is updated, snapshots will accumulate on both the primary and recovery Nutanix clusters, leading to a steady growth in storage consumption. Other factors like network segmentation (Option C) or encryption (Option B) affect traffic paths and security but do not directly influence the quantity of data stored on the disks. Recovery validation (Option A) might use temporary storage but should not cause a continuous, long-term increase. Therefore, aligning the retention policy of the backup software with the available cluster capacity is the primary troubleshooting step.
NEW QUESTION # 39
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