1Z0-1123-25 Question 82
Select 2Your organization has an on-premises VMware environment that needs to be migrated to Oracle Cloud VMware Solution using Hybrid Cloud Extension (HCX). Despite establishing a secure IPsec VPN tunnel between your data center and Oracle Cloud Infrastructure (OCI), some large virtual machines fail to replicate properly and certain networks remain unreachable. Which two initial steps should you take to ensure a successful HCX migration in this scenario?
- A
Deploy an HCX Manager on-premises and pair it with the Oracle Cloud VMware Solution HCX Manager to coordinate replication activities.
- B
Immediately migrate the largest virtual machines first to ensure that all resources are allocated primarily for these critical workloads.
- C
Set up an HCX site pairing between your on-premises data center and the OCI SDDC, ensuring that management networks, uplinks, and subnets are properly routed.
- D
Install a custom plug-in on each ESXi host to optimize large VM data transfers over the IPsec VPN tunnel.
- E
Configure automated NAT rules for all on-premises subnets to map directly to public IP addresses in Oracle Cloud.
Show answer and explanation
Correct answers: A, C
Explanation
When using Hybrid Cloud Extension, you must deploy and pair an HCX Manager on-premises with the Oracle Cloud VMware Solution to enable seamless networking, replication, and migration. Properly configuring the site pairing ensures that traffic routes correctly between on-premises and cloud networks. Oracle� documentation for HCX-based migrations recommends verifying connectivity via VPN or FastConnect, setting up HCX site pairing, and ensuring both ends have matching network configurations before starting any workload migrations.
- A. Correct.
Correct. Deploying the HCX Manager on-premises and pairing it with the corresponding HCX component in Oracle Cloud is a fundamental requirement. This creates a management plane for orchestration and control of replication, migration, and network extension tasks.
- B. Incorrect.
Incorrect. Prioritizing only large virtual machines first can lead to network bottlenecks and does not resolve basic connectivity or pairing issues. You typically configure and validate the necessary setup (site pairing, network settings) before migrating any workloads, large or small.
- C. Correct.
Correct. Properly establishing site pairing is crucial for ensuring HCX can control replication paths, network extension, and routing between the on-premises environment and Oracle Cloud VMware Solution. Without correct site pairing and network configuration, subnets can remain unreachable.
- D. Incorrect.
Incorrect. HCX does not require a custom plug-in installed on each ESXi host for most migration scenarios. HCX components typically include the HCX Manager, Interconnect appliances, and WAN optimization, but do not require host-level plug-ins to be manually installed on each ESXi host.
- E. Incorrect.
Incorrect. Automatically assigning public IP addresses to on-premises subnets is not a recommended practice. Instead, you should properly configure secure tunnels and routing through HCX or VPN. NAT for internal subnets is typically unnecessary and could complicate connectivity.