HCI / Hyperconverged Infrastructure Servers

Hyperconverged infrastructure (HCI) collapses compute, storage, and network into commodity servers. Each 'node' contributes CPU, memory, and a portion of the cluster's distributed storage — when you outgrow capacity, you add another node.

Pro Disk Network stocks vSAN-Ready, Nutanix-Ready, S2D-Ready, and StarWind-Ready node configurations: Dell PowerEdge R740xd / R750xd (8-24 SFF bays, mixed NVMe+SAS or all-NVMe), HP ProLiant DL380 Gen10 (vSAN ReadyNode), Cisco UCS C240 M5 / M6 (HX HyperFlex), and Lenovo ThinkSystem SR650 V2 (vSAN ReadyNode).

For 4-node minimum cluster builds we offer pre-configured bundles: 4× R740xd + 25 GbE switching + rails + management licensing, ready to plug in and run. Typical 4-node cluster pricing: $35-60K refurbished, $75-150K new (depending on storage density).

License/software guidance: VMware vSAN moved to per-core after Broadcom acquisition. Nutanix is per-core/per-node. Microsoft S2D requires Datacenter Edition Windows Server. StarWind VSAN is per-host. We work with each vendor's quoting team to bundle hardware and software with the right SKUs.

Featured HCI / Hyperconverged Infrastructure Servers

Frequently Asked Questions

What's the minimum cluster size for HCI?

VMware vSAN: 3 nodes minimum (4 recommended for proper FTT=1 with rebuild headroom). Nutanix: 3 nodes min. Microsoft S2D: 2 nodes (with USB witness) for 'budget' mode, 4 nodes for production. StarWind VSAN: 2 nodes works fine. We've sold to plenty of 2-3 node deployments — they work but limit fault-tolerance.

How much memory per HCI node?

Plan 8-12 GB per VM you intend to host on the node, plus 32-64 GB for the hypervisor and HCI control plane. Typical configurations: 384-768 GB per node. The HCI control plane (vSAN witness, Nutanix CVM) eats more memory than people expect — budget 32-64 GB just for that.

Should I use all-NVMe or hybrid HCI?

All-NVMe (cache + capacity both NVMe) gives consistent sub-millisecond latency — best for tier-1 OLTP databases or VDI. Hybrid (NVMe cache + SAS capacity) is 30-50% cheaper per TB but trades some IOPS. For most workloads, hybrid is fine; for SAP HANA on HCI or 1000+ user VDI, all-NVMe.

Do refurbished servers qualify as vSAN ReadyNode?

Yes — vSAN ReadyNode is a hardware spec, not a freshness requirement. As long as the platform, CPUs, memory, controller, and drives match the certified configuration on VMware's HCL, it qualifies. We sell refurbished vSAN-Ready bundles for 30-50% off MSRP.

Other Use-Case Hardware

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Server Virtualization & HCI Hub

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VMware vSphere, Hyper-V, Proxmox, KVM, Nutanix AHV — hardware sizing, licensing math, deployment.

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