What Is VSAN?
VSAN (virtual storage area network, often written vSAN) is a logical abstraction of a physical storage area network (SAN). Instead of relying on dedicated, expensive SAN hardware, a VSAN pools local disks and flash storage across multiple servers or nodes and presents them as a single shared datastore. Storage-related operations are abstracted away from the physical layer, so applications and virtual machines can access shared storage over the network as if it were locally attached.
Note: "vsaan" is also a common misspelling of VSAN. It should not be confused with unrelated names such as the film The Vvaan: Force of the Forrest, Vsaan Pharmaceuticals, or Vsaan Ghana Ltd — none of which relate to computing.
How VSAN Works
A VSAN aggregates the direct-attached storage of participating nodes into a distributed datastore. Data is typically striped and mirrored across nodes, with policies defining redundancy, performance and capacity targets. Two common deployment models exist:
| Model | Storage Media | Typical Use |
|---|---|---|
| Hybrid VSAN | Flash for caching + HDD for capacity | Cost-sensitive general workloads |
| All-flash VSAN | Flash for both cache and capacity | High-performance, low-latency workloads |
VSAN environments communicate over standard protocols and benefit from fast networking — commonly 1 GbE or 10 GbE — between nodes. Because storage is distributed, losing a single node does not necessarily mean losing data, provided the storage policy maintains sufficient replicas.
Where VSAN Fits in Edge and Industrial Computing
VSAN is most often associated with data-centre hyperconverged infrastructure, but the same principles apply at the edge. Small clusters of mini PCs or industrial computers can form a lightweight shared-storage pool for branch offices, factory floors, retail sites and remote labs. In these settings the priorities shift: fanless, dust-tolerant hardware, wide-temperature operation, dual Ethernet for redundant links, and low power draw matter more than raw rack-scale capacity.
Thin clients and mini PCs are natural VSAN participants or access devices. A thin client with a modest ARM or Intel processor can serve as a management console or a lightweight node, while more capable mini PCs with 16 GB RAM, 512 GB SSD and multi-core Intel Core processors handle heavier virtualisation and storage duties.
Choosing Hardware for a VSAN Node
When specifying a node, consider:
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Networking: Gigabit Ethernet is the baseline; dual Ethernet ports enable redundancy or separation of storage and management traffic.
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Memory: 8–16 GB is a practical starting point for virtualisation and caching; 32 GB+ for denser workloads.
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Storage: SSDs from 128 GB to 1 TB, sized to your capacity and cache requirements.
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Processor: 4-core Intel N-series chips suit light nodes; 6–12 core Intel Core i3/i5 parts handle multiple VMs and heavier I/O.
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Form factor: Fanless industrial PCs for dusty or hot environments; compact mini PCs for offices.
Thinvent Products Suited to VSAN Deployments
Thinvent builds fanless, reliable computing hardware that fits both ends of a VSAN topology. For node and management roles, the Aero Mini PC with Intel Core i3-1215U or Core 5 120U, up to 16 GB DDR4 and 512 GB SSD delivers strong multi-core performance in a compact chassis. The Industrial PC IPC3 and IPC5 add robust, fanless designs for factory and edge environments, with the IPC5 offering a 12-core Intel Core i5-1240P and 16 GB RAM. For access and console duties, the Micro 5 and Micro 6 Pro thin clients run quiet, low-power ARM processors with Thinux Embedded Linux, and the Treo Mini PC provides an affordable Intel N100/N95 entry point. Together these products let you assemble distributed storage and virtualisation clusters that keep running in demanding conditions.
