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Zorluk: Çok zorHybrid and VMware Cloud on AWS Migrations

An enterprise is migrating a business-critical multi-tier application from an on-premises VMware vSphere cluster to a VMware Cloud (VMC) on AWS Software-Defined Data Center (SDDC). The application consists of a write-heavy database VM with an 8 TB8\text{ TB} virtual disk that requires zero downtime during migration, and fifty stateless web servers that can tolerate a brief reboot of less than 10 minutes10\text{ minutes}. The on-premises network (192.168.10.0/24192.168.10.0/24) must be extended to VMC on AWS to maintain IP addresses. The VMC on AWS SDDC is connected to native AWS VPCs containing shared services via an AWS Transit Gateway. The network path between the on-premises environment and VMC on AWS is established over a 10 Gbps10\text{ Gbps} AWS Direct Connect connection.

To optimize the migration timeline, minimize downtime, and prevent sub-optimal routing (hairpinning) for migrated VMs communicating with native AWS services, which actions should the Solutions Architect take? (Select TWO.)

  1. Use VMware HCX Replication Assisted vMotion (RAV) to migrate the write-heavy database VM, and enable VMware HCX Mobility Optimized Routing (MOR) on the extended network segment.Cevap
  2. Use VMware HCX Bulk Migration to migrate the fifty stateless web server VMs, scheduling the switchover to occur during a maintenance window.Cevap
  3. C
    Use VMware HCX Cold Migration to migrate the write-heavy database VM to ensure data consistency, and establish a VMware HCX Network Extension without enabling Mobility Optimized Routing (MOR).
  4. D
    Use VMware HCX Bulk Migration to migrate the database VM, and attach the VMware Cloud on AWS SDDC directly to a Direct Connect Gateway to route traffic between the extended network and the native AWS VPCs.
  5. E
    Use VMware HCX vMotion to migrate the fifty stateless web server VMs in parallel, and configure a Route 53 Private Hosted Zone associated only with the native VPCs to resolve the on-premises gateway IP address.

Cevap

Use VMware HCX Replication Assisted vMotion (RAV) to migrate the database VM, enable VMware HCX Mobility Optimized Routing (MOR) on the extended network, and use VMware HCX Bulk Migration to migrate the stateless web servers.
The correct options are to use VMware HCX Replication Assisted vMotion (RAV) for the database VM along with enabling Mobility Optimized Routing (MOR), and to use VMware HCX Bulk Migration for the stateless web server VMs. RAV replicates the VM active state and performs a hot cutover, meeting the zero-downtime database requirement. MOR prevents local traffic between the migrated VMs and native AWS VPCs from routing back to the on-premises default gateway. Bulk Migration allows for parallel replication and scheduled cutovers, which is perfect for the stateless web servers that can tolerate a brief reboot.

Adım Adım Çözüm

1
Analyze migration requirements for the database VM.
The database VM is write-heavy, has a large virtual disk (8 TB8\text{ TB}), and requires zero downtime during migration.
This requirement rules out Cold Migration and Bulk Migration, which cause VM downtime. RAV or vMotion is required; RAV is preferred for large/active VMs as it replicates data in the background and does a hot cutover.
2
Analyze migration requirements for the fifty web server VMs.
The web servers are stateless and can tolerate brief reboots.
This allows the use of HCX Bulk Migration, which replicates the VMs in parallel while they are running, and then reboots them on the target side during a scheduled window, avoiding the serial limitations of HCX vMotion.
3
Evaluate network routing optimization for the extended network.
Traffic between migrated VMs in VMC on AWS and native AWS VPCs needs to avoid routing back to the on-premises gateway.
By default, extended L2 networks route all traffic through the on-premises default gateway. Enabling Mobility Optimized Routing (MOR) allows the VMC SDDC's Tier-1 router to intercept and route local cloud traffic directly to the Transit Gateway, preventing tromboning.

Anahtar Kavram

Selecting appropriate VMware HCX migration methods (Bulk Migration vs. RAV) and optimizing hybrid routing using Mobility Optimized Routing (MOR) to prevent latency-inducing hairpinning.
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Konular

Hybrid and VMware Cloud on AWS Migrations

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