The Definitive Guide to VCF Storage!
Editor’s clarification (November 2026): This October 2025 guide is preserved as a historical edition. The passage referring to “native backup and restore through vLCM integration” should not be interpreted as a supported backup design: vSphere Lifecycle Manager (vLCM) is a lifecycle and patch management service, not a backup solution. Likewise, standard VM snapshots are not independent backups. The up-to-200 snapshot capability discussed here concerns vSAN ESA protection snapshots, whose scope, retention and replication features differ from ordinary vSphere snapshot chains. For current recovery architecture and product terminology, consult vSAN Protection and Recovery in VCF 9.1, Snapshots Are Your Best Friend, and Broadcom KB 452757. Keep separate, tested backups and recovery copies appropriate to your RPO/RTO and threat model.
Architect’s Edge Insights: The Definitive Guide to VCF Storage — and Why vSAN Isn’t a Requirement (But Still Rocks!)
If there’s one conversation every company ends up having — no matter the size, the sector, or the stack — it’s storage.
Whether you’re building your first cluster or refining your hundredth, storage always finds its way to the center of the conversation. It’s where performance, resilience, and cost all collide — and where the biggest design decisions tend to live. I’ve often said that roughly 80 percent of infrastructure spend ultimately ties back to storage. Even if your number looks a little different, there’s no denying it’s the heavyweight in most IT budgets.
And yet, for something so foundational, the guidance can feel scattered. Everyone talks about vSAN, Cloud Foundation, and data services — but the resources that tie it all together? They’re all over the map. Some live deep in TechDocs, others in release notes, a few tucked away in blogs or YouTube playlists.
That’s why I put this together.
A single, definitive guide — the one you’ll want to keep bookmarked — covering everything you need to know about VCF storage and vSAN. From architecture and design to operations, performance, and recovery, this is the comprehensive field manual that brings all the official sources, insights, and context together in one place.
This isn’t just another take on “is vSAN required?” — it’s a deep dive into why the landscape changed, what that flexibility means in VCF 9, and how innovations like vSAN ESA (Express Storage Architecture), global deduplication, snapshot scalability, and the Intelligent Recovery Engine (IRE) are reshaping how we think about storage in the modern data center.
Let’s unpack it.
The Landscape: Storage in VMware Cloud Foundation
Storage has always been the backbone of VCF — the invisible layer that everything else depends on. With VCF 9, the storage story matures: it’s more flexible, more efficient, and more aligned with how real environments actually evolve.
You’re no longer confined to one option or timeline. You can start with existing infrastructure, adopt vSAN where it fits, and evolve toward ESA-driven performance and simplicity over time.
Reference 1: Considerations Before Converting or Importing Existing vSphere Environments into VMware Cloud Foundation (VCF 5.2 and earlier).
The shift from “vSAN required” to “vSAN recommended” isn’t a compromise — it’s an evolution, rooted in flexibility, modernization, and architectural choice.
VCF 9: Storage Freedom, by Design
Broadcom’s VCF 9.0 release redefined what’s possible in storage architecture. While vSAN remains the strategic and most deeply integrated option, external NFS and Fibre Channel storage are now supported for the Management Domain — opening the door for gradual adoption and hybrid designs.
Key Design and Release References:
- VCF 9.0 Design Guide for vSAN
- VCF 9.0 Release Notes for vSAN
- VCF 9.0 Deprecation Notes for vSAN
- vSAN Multi-Rack HCI Storage Model
The takeaway: VCF 9 gives you freedom — without abandoning structure. Start where you are, and evolve toward what’s next.
Start Where You Are, Grow When It Fits
The best part of this new model? You don’t have to make sweeping changes on day one.
Most customers onboard VCF with existing SAN or NFS storage already in production — and that’s fine. Storage refresh cycles rarely line up with platform transitions, and VCF 9 embraces that reality.
- Begin with what you already own, integrate it cleanly, and adopt vSAN when timing aligns.
- Each domain expansion or refresh becomes a chance to bring in ESA, rather than a forced migration.
- You gain all the benefits of VCF lifecycle management without disrupting proven storage strategies.
VCF 9 doesn’t dictate your timeline — it aligns with it.
Enter vSAN ESA: Efficiency, Speed, and Smarts
When you are ready for vSAN, the latest generation — the Express Storage Architecture (ESA) — is where the real fun begins. It’s not just a performance upgrade; it’s a complete re-imagining of how vSAN handles data, space efficiency, and resilience.
ESA Highlights in vSAN 9
- Performance at scale: Log-structured writes and parallel I/O paths unlock throughput and consistency.
- Global deduplication and compression: Cluster-wide efficiency with minimal overhead.
- 200 snapshots per VM: Enabling rapid DR testing, cloning, and ransomware recovery scenarios.
- Intelligent Recovery Engine (IRE): In active development within VLRM / VCDR, bringing automated, policy-driven ransomware recovery and smart failover orchestration to the VCF data-protection ecosystem.
Core vSAN References:
- vSAN Technology Overview
- vSAN FAQs
- vSAN Feature Matrix
- vSAN Availability Technologies
- vSAN Space Efficiency Technologies
- vSAN Encryption Services
- vSAN File Services
ESA is the architecture to build forward on — faster, leaner, and purpose-built for where Cloud Foundation is headed.
Architecting the Future: Design, Deploy, Operate
Getting vSAN right is about design — not luck. VMware provides a deep library of documentation to ensure you architect with confidence.
Deployment, Design, and Operations:
- Designing vSAN Network
- Planning and Configuring vSAN
- Administering VMware vSAN
- Monitoring and Troubleshooting vSAN
Design and Operational Guides:
- vSAN Design Guide
- vSAN Storage Clusters Design & Operational Guidance
- vSAN Cluster Design – Large vs Small
- vSAN Operations Guide
- vSAN Stretched Cluster Guide
- vSAN Stretched Cluster Bandwidth Sizing
- vSAN 2-Node Cluster Guide
- vSAN Migration Guide
- Troubleshooting vSAN Performance
Resilience, Recovery, and Ransomware Readiness
VCF 9 and vSAN 9 bring a strong data-protection and recovery stack:
- Support for 200 snapshots per VM for rapid restore and test/dev agility.
- Native backup and restore through vLCM integration.
- Integrated DR with stretched and multi-rack designs.
- Ransomware Recovery powered by the Intelligent Recovery Engine (IRE) within VLRM/VCDR — automating isolation, scanning, and policy-driven recovery for compromised workloads.
Resilience & DR Resources:
- Backup and Restore of VMware Cloud Foundation
- Site Protection and Disaster Recovery for VCF
- On-Premises Ransomware Recovery for VCF
Learn, Watch, and Share
Resource Center & Learning:
- VMware vSAN Resource Center
- vSAN Technical Blogs (Cloud Foundation Storage)
- vSAN Interactive Infographic (vSAN 8.x+)
- VCF 5.2.1 Poster
Watch & Listen:
Wrapping It Up
Storage decisions are strategic — not situational. And VCF 9 gives you the flexibility to make those decisions on your schedule, without compromise.
vSAN isn’t a requirement anymore — but it remains one of the smartest, most forward-looking investments in a Cloud Foundation strategy.
Keep this guide close. Share it often. Because when someone asks “Where can I find the complete story on VCF storage?” — you’ll already have it bookmarked.
Have questions about your path to VCF 9? Drop them in the comments or message me—we’re all navigating this together. Like, repost, or tag someone planning their next platform move.
This article is part of the Architect’s Edge Insights series — designed to cut through confusion and deliver clarity on VMware Cloud Foundation.
#VMwareCloudFoundation #vSAN #Broadcom #StorageStrategy #CloudArchitecture #ArchitectsEdge #HybridCloud #ESA #vSAN9 #VCF9 #SDDC #DataProtection #RansomwareRecovery
Historical source: LinkedIn, October 9, 2025. Original resource link targets in the 33-entry bibliography are awaiting individual reconciliation; DO NOT PUBLISH until checked.
