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Tier 1 · Telecom and hybrid infrastructure

VMware and vSAN modernization and migration

VMware vSphere/vSAN rationalization and migration to OpenShift Virtualization

Hypervisor licensing and storage performance usually drive the decision. We optimize production VMware/vSAN estates and plan phased migrations to OpenShift Virtualization, with workload-specific cutover windows, recovery checks and data-consistency gates.

2-week Assessment Sprint, $14,500 fixed · 100% credited toward an annual retainer or managed agreement signed within 30 days

VMware vSAN ESA & OpenShift Virtualization Cutover BlueprintEngineering schematic illustrating source vSphere 8 / vSAN ESA clusters, MTV + VDDK warm CBT pre-copy replication and target KubeVirt / ODF execution.

Where hypervisor migrations break

Consolidation and platform exits stall when VM-to-VM dependencies are missing, SPBM policy changes trigger unexpected vSAN resynchronization, or legacy appliances depend on specific L2 adjacency and storage latency. Moving a VM does not establish application readiness, backup coverage or a safe route back after new writes reach the target.

What we engineer

vSphere & vSAN Performance and License Consolidation

Audit vCenter clusters, host/socket/core inventory, vSAN OSA/ESA architecture and workload I/O. Right-size VMs, model SPBM resilience and resync capacity, and compare consolidation options against your actual license entitlements and application headroom.

Migration to OpenShift Virtualization

Build side-by-side VMware-to-KubeVirt migration plans with Red Hat Migration Toolkit for Virtualization (MTV). Validate guest support, storage mappings, VLAN/network attachment and monitoring. Use supported cold or warm migration paths and schedule final cutover with application owners.

Application Classification & Wave Planning

Classify applications for rehost, replatform, refactor or retirement. Use Migration Toolkit for Virtualization (MTV) for supported KVM conversion; validate routing, DNS, security and storage before each wave.

Rollback & Cutover Assurance

Automate storage, backup and network pre-checks. Define acceptance gates, source shutdown, final synchronization and recovery authority. Rehearse failback with explicit data-reconciliation rules once target writes begin.

Reference stack and standards

Virtualization & Storage
VMware vSphere (ESXi/vCenter), vSAN OSA/ESA, Red Hat OpenShift Virtualization (KubeVirt) and OpenShift Data Foundation.
Migration & Cloud Tooling
Red Hat MTV, OpenShift Virtualization (KubeVirt), Terraform/OpenTofu and Ansible.
Network Dependencies
VLAN trunks, L2/L3 adjacency, DNS, firewall policies and existing NSX dependencies reviewed with your network owner; NSX lifecycle management remains outside our scope.

MTV warm migration includes a final cutover outage. We validate the applicable source/target path, maintenance window and recovery procedure; instant failback, unchanged IP addresses and automatic license savings are not guaranteed.

Reference architecture

T1Telecom and hybrid infrastructure

Separate management, workload migration and hybrid routing paths, joined by validated platform dependencies.

Telecom management

  1. Ericsson OSS-RCLegacy node inventory · phased retirement
    Phased node re-homing
  2. Ericsson ENMRAN / Core / IMS · REST NBI · cmedit · AMOS
    Northbound telemetry
  3. FM / PM / CM mediation3GPP · SNMPv3 · VES collectors · Kafka

Virtualization & container platform

  1. VMware vSphere / vSANSPBM · I/O baselines · VM dependencies
    Warm / cold migration; final cutover
  2. OpenShift VirtualizationMTV · KubeVirt · ODF / supported CSI
    Runs on the cluster
  3. Red Hat OpenShiftrestricted-v2 workloads · Multus / SR-IOV

Hybrid storage & virtualization

  1. On-premise routingIPAM · segmentation · BGP / BFD where supported
    Hybrid interconnect
  2. vSAN ESA & OpenShift VirtualizationRedundant paths · centralized firewall inspection
    Routed workload access
  3. Hardened cluster foundationOpenShift OCP · restricted-v2 SCCs · ODF · Multi-tenant namespaces · FinOps
Connections across boundaries
Ericsson ENM / Red Hat OpenShift
ENM platform sizing follows the vendor-supported deployment model.
FM / PM / CM mediation / Hardened cluster foundation
Approved telemetry destinations use the defined hybrid routing and security policy.

Southbound element mediation is validated per installed ENM and node software release. MTV warm migrations replicate active blocks in the background and execute final cutover inside a scheduled window with verified ESXi fallback.

Download Mermaid source (.mmd)

Deliverables in your repository

You keep the delivered code, manifests, diagrams, runbooks and validation evidence in your repositories. We agree the systems, acceptance criteria and access prerequisites in the SOW.

  1. VM Dependency & Affinity Map

    Application-grouped inventory with East-West flows, IOPS profiles, placement constraints and L2/L3 requirements.

  2. Hypervisor Cost & Consolidation Model

    A transparent TCO comparison of optimized vSAN and OpenShift Virtualization targets, including licenses, capacity, operations and migration effort.

  3. Wave-by-Wave Migration Runbooks

    Versioned MTV configurations, network and storage mappings, cutover checks, rollback triggers and data-reconciliation procedures.

  4. Target Platform Foundation

    The agreed OpenShift Virtualization target with mapped security, backup, monitoring and application acceptance evidence.

  5. Co-Existence Network Design

    VLAN and OVN-Kubernetes bridging so migrated VMs keep their IP identity where applications require it, with the routing changes for each wave.

  6. Post-Cutover Performance and Cost Report

    Before-and-after latency, storage IOPS and licensing cost for each wave, measured against the consolidation model.

Inside the 2-week Assessment Sprint

What the $14,500 sprint covers for this service. Access stays read-only throughout, and you keep the output whether or not you continue.

  1. Days 1–3

    Estate and dependency inventory

    Read-only export of vCenter inventory, VM-to-VM traffic, SPBM storage policies and vSAN I/O baselines.

  2. Days 4–6

    Blast-radius and resync risk

    Dependency groups scored by cutover risk, resync and capacity exposure, and the VMs that need L2 adjacency or a specific guest driver.

  3. Days 7–9

    Wave plan and fallback path

    Dependency map in Mermaid (.mmd) source, a consolidate-or-migrate decision per group, the MTV wave order and ESXi fallback criteria for each wave.

  4. Day 10

    Read-out and cost model

    Consolidation and licensing cost model, the wave schedule and a fixed-scope backlog.

Engineering scope

We migrate and support telecom management systems and hybrid infrastructure, automate how workloads are validated and shipped, and build the portals and network API integrations that expose those platforms to your teams and customers.

VMware & vSAN Modernization

A renewal decision made without a dependency map becomes an unplanned migration. The order of moves is set by shared databases, backup jobs and storage constraints, not by the licence date.

Best for

Shared databases, backup jobs and storage constraints can determine the migration order. We map those dependencies before selecting a workload move or scheduling a change window.

Bring to the review

vCenter/ESXi releases, vSAN architecture, cluster capacity, workload dependencies and backup arrangements.

Implementation

Inventory vCenter, ESXi, vSAN architecture and guest workloads. Check source and target compatibility, group applications by dependency and validate a pilot wave before expanding the migration. NSX lifecycle management is outside our service scope.

Prerequisites

vCenter and vSAN releases, cluster and storage-policy inventory, VM dependency and licence data, network and firewall ownership, the target OpenShift Virtualization platform, and backup and restore evidence for the workloads in scope.

Operational support

Investigate virtualization and storage issues, review recovery objectives and rehearse restoration with application owners. Record measured recovery time, data loss and application checks for the systems included in the test.

Acceptance evidence

Workload dependency map, compatibility and capacity findings, migration-wave runbook and restoration test record.

  • Installed release, hardware and storage compatibility recorded.
  • Agreed management, network, storage and workload checks pass.
  • Recovery evidence, change approval and operational ownership recorded.
Responsibilities & dependencies

Identify the owners of hardware, networking, storage, backups and guest applications. Confirm licensed access, vendor support entitlement and change authority before agreeing the work.

Support coverage

Normal support:
Monday–Friday, 8 a.m.–6 p.m. Eastern time (America/New_York), excluding public holidays. Supported systems, access and responsibilities are agreed in writing.
24/7 emergency on-call:
Part of managed operations. For critical customer outages under that coverage, reported through the agreed channel, we aim to investigate, provide substantive engineering updates and attempt resolution within four elapsed hours of emergency receipt, on a best-effort basis.
Resolution:
Resolution within that window is not guaranteed. Other cases follow your SLA.
Licenses and entitlements:
Vendor licenses and support entitlements are separate from our services.

Planning considerations

  1. Compute, network & storage
  2. vSphere / vCenter / vSAN
  3. Guest workloads & recovery

Explore a sample service scope. We agree your interfaces, permissions and acceptance criteria before delivery; use the engagement design for deployment.

Start with the installed environment
Record vCenter and ESXi releases, cluster configuration, hardware, vSAN OSA or ESA, and integrations. Assess compatibility against the exact installed and target releases. A vSphere, hardware or backup compatibility check does not establish compatibility for the entire environment.
Separate operational support from vendor lifecycle
Broadcom states that vSphere 7.0 general support ended on October 2, 2025. Engineering assistance does not restore vendor patch availability or entitlement. Confirm the lifecycle and contract for each installed release before choosing operational assistance, upgrade or migration.
Storage architecture and hardware matter
vSAN Original Storage Architecture (OSA) and Express Storage Architecture (ESA) have different designs and hardware requirements. Use the applicable Broadcom compatibility guide for the exact architecture and release, including devices, controllers, firmware and drivers; do not treat an OSA hardware listing as ESA approval.
Recovery crosses the platform boundary
Agree separate recovery checks for vCenter, host and cluster configuration, storage and guest applications. VM snapshots are not an independent backup strategy. Application consistency, backup retention, restore access and measured recovery objectives belong in the acceptance plan.

A closer look at the deliverables

Use our sample checklists to scope work and review deliverables. Adapt them to your environment. They are illustrative, not customer results, vendor-certified procedures or executable production instructions.

Illustrative expected result

Virtualization baseline and acceptance

VMware platform baseline and change checklist

Prerequisites
Inventory vCenter, ESXi, clusters, vSAN architecture, hardware and firmware, networks, backup systems and guest application owners. Record installed and target releases and vendor entitlement.
Expected result / acceptance threshold
Release and compatibility findings recorded; platform and workload checks accepted; recovery evidence and operational ownership documented.
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