StarWind VSAN: Virtualization Storage Ledger 2026 Scorecard

Part of the Virtualization Storage Ledger (edition 2026-10-16). How the scores work: methodology.

Snapshot

Type: product
Owner: DataCore Software (Fort Lauderdale, USA; private, growth-equity backed); acquisition of StarWind Software announced 2025-05-21, terms undisclosed
Licence: Commercial, closed source; priced per usable TB by quote; term licence is the default, perpetual licences only for US federal customers; free edition and 30-day trial with registration
Latest release: V8 build 20104, CVM 20260918 (2026-09-18): Debian 13.7 base with an offline node-by-node migration from Ubuntu or CentOS appliances
Support lifecycle: No published support window or end-of-support policy; support and updates run with the term licence
Next milestone: DataCore's Data Freedom Platform control plane is due to add StarWind in summer 2027 at the earliest (vendor statement to press, 2026-10-07); no dated StarWind-only milestone
Hypervisors: vSphere 8.0 or later, Windows Server 2019 or later (Hyper-V), oVirt, OLVM and RHV 4.4 or later, Proxmox VE 9.1 or later, XCP-ng 8.3 or later (StarWind system requirements page, read 2026-10-15); no Nutanix AHV or KubeVirt platforms
Tier: Software-defined storage
Archetype: Dependable builder under new ownership
Evidence grade: B. The DataCore acquisition and the Vates validation were read from vendor press releases. Release notes, pricing, system requirements and the Proxmox guide are StarWind's own pages read through a text mirror after the site blocked automated access, graded B. Builds before 2021 are not on the public release notes page, so the 2015 state is held flat until the first dated change (grade C for those years). Data services, data protection and security rest on feature lists without dated release notes.

Scorecard

Dimension	Score	Direction
Capability today	57.9 / 100	higher is better
Momentum since end of 2022	+7.6 points (2015 to 2022: +2.3)	higher is better
Credibility	13.5 / 25	higher is better
Commercial risk	14.0 / 25	lower is better
Technical lock-in	7.5 / 25	lower is better
Integrator fit	7.5 / 20	higher is better
AI leverage	2.0 / 20	higher is better
Ledger Index	49.1 / 100	balanced weights; see the methodology

Capability by domain, 2015 to today

Scores 0 to 5 against fixed anchors; total is weighted to 100.

Domain (weight)	2015	2019	2022	Today
Data services core (15)	2.5	2.5	2.5	3
Resilience and HA (15)	3	3	3.5	3.5
Performance and protocols (12)	2.5	2.5	2.5	3.5
Hypervisor integration (12)	3	3	3	4
Scale and topology (10)	2.5	2.5	2.5	2.5
Data protection and DR (10)	2.5	2.5	2.5	2.5
Security (8)	1	1	1.5	1.5
Operations and automation (8)	2	2	2	2.5
Hardware and deployment freedom (5)	3.5	3.5	3.5	4
Kubernetes and containers (5)	0	0	0	0
Total / 100	48.0	48.0	50.3	57.9

Year by year: 2015: 48.0 · 2016: 48.0 · 2017: 48.0 · 2018: 48.0 · 2019: 48.0 · 2020: 48.0 · 2021: 48.0 · 2022: 50.3 · 2023: 55.0 · 2024: 55.5 · 2025: 55.5 · 2026: 57.9

What moved the score

Year	Domain	Change	Points	Trigger
2022	Resilience and HA	3 → 3.5	+1.5	Build 14869: synchronization journal on a separate disk with best-performance or fast-recovery strategies
2022	Security	1 → 1.5	+0.8	Build 14869: CHAP secrets encrypted at rest, TLS 1.2 for management
2023	Data services core	2.5 → 3	+1.5	CVM 20231016: ZFS pools and software RAID managed from the web console, which brings compression to the controller VM
2023	Hypervisor integration	3 → 3.5	+1.2	CVM 20231016: VMware vCenter plug-in
2023	Operations and automation	2 → 2.5	+0.8	CVM 20231016: web and text console for the controller VM
2023	Performance and protocols	2.5 → 3	+1.2	CVM 20231016: iSCSI LUNs plus SMB and NFS shares from the web console; iSER on the RDMA path
2024	Hardware and deployment freedom	3.5 → 4	+0.5	Build 15469: bare metal ISO; VirtIO drivers for KVM hosts
2026	Hypervisor integration	3.5 → 4	+1.2	Proxmox VE plug-in (starlvm, guide 2026-04-23); build 20089: XCP-ng support, vCenter 8 and 9
2026	Performance and protocols	3 → 3.5	+1.2	Build 20089: NVMe-oF LUNs GA, standalone and highly available

Direction, 2023 to 2026

Each release item carries one theme and one driver (V vision, C customer need, M market window, U upstream, P portfolio).

Date	Item	Theme	Driver
2023-02	Builds 14947 to 15159: slow full sync, spurious replication failures and partner deadlocks fixed	Resilience	C
2023-09	Build 15260: sync and heartbeat recovery under degraded storage with VAAI	Resilience	C
2023-10	CVM 20231016: web console, ZFS and software RAID management, vCenter plug-in	Operations	C
2024-05	Build 15469: 512-byte emulation on 4Kn drives, automatic LUN header backups, bare metal ISO, VirtIO for KVM	Hardware	C
2024-08	CVM 20240822: Proxmox management networking fixes	Hypervisor integration	M
2024-12	StarWind VSAN on Proxmox configuration guide published	Hypervisor integration	M
2025-02	CVM 20250225: StarWindX updated for new CVM licensing options	Licensing	P
2025-05	DataCore announces the acquisition of StarWind; products to continue as standalone solutions	Packaging	P
2025-05	DataCore targets a management layer with AI applications for fall 2025 (not shipped for StarWind)	AI	V
2025-10	Build 20084: iSER instability and three-node split-brain during upgrade fixed, HA networking options, Proxmox boot rescan	Resilience	C
2026-04	Proxmox SAN integration guide with the starlvm plug-in for Proxmox VE 8 and 9	Hypervisor integration	M
2026-05	Build 20089: NVMe-oF LUNs GA with HA and split-brain detection; XCP-ng support; vCenter 8 and 9	Performance	V
2026-06	Vates and DataCore validate XCP-ng with StarWind VSAN	Hypervisor integration	M
2026-09	Build 20104: Debian 13.7 base with offline migration of Ubuntu and CentOS appliances; security mitigations	Packaging	U
2026-10	DataCore's Data Freedom Platform in preview; StarWind to join in summer 2027 at the earliest	AI	P

Centre of gravity: Hypervisor integration (4), Resilience (3), Packaging (2)
Blind spots (no items): Data services, Scale, Data protection, Security, Kubernetes
Driver mix: Vision 13%, Customer need 33%, Market window 27%, Upstream 7%, Portfolio 20%
Idea-to-need index: 0.18 (0 = demand-pulled, 1 = thesis-pushed)

Credibility: 13.5 / 25

Criterion	Score	Basis
Cadence	3	Four builds between 2025-10-22 and 2026-09-18 after an eight-month gap; dated release notes but no published rhythm
Roadmap transparency	2	Release notes and blog are public; no roadmap; the DataCore plans reach customers through press interviews
Say-do	3	NVMe-oF and XCP-ng support shipped as announced in 2026; DataCore's fall 2025 management layer slipped to 2027 for StarWind
Velocity	3	NVMe-oF GA, Proxmox and XCP-ng support and a Debian 13 rebase inside twelve months, otherwise fix releases
Lifecycle stability	2.5	Offline node-by-node migration forced by the 2026-09 Debian rebase; ownership change; no published support window

Commercial risk: 14.0 / 25 (lower is better)

Criterion	Score	Basis
Price and licence volatility	3	Perpetual licences withdrawn for all but US federal customers after the 2025 acquisition, date not published; no price list
Purchase constraints	2.5	Quote only, metered per usable TB, term licence by default; a free edition with unstated limits and a 30-day trial exist
Channel and access	2	Direct and channel partners; free edition and trial behind registration; paid builds delivered with the licence
Owner stability	3.5	Acquired in 2025 by growth-equity backed DataCore, a serial acquirer merging five products into one control plane
Cost of staying supported	3	Support and updates only while the term licence runs; no published end-of-support dates

Technical lock-in: 7.5 / 25 (lower is better)

Criterion	Score	Basis
Formats	1.5	Standard iSCSI, NVMe-oF, NFS and SMB outward; StarWind device images inside
Export path	1.5	VM-level moves with hypervisor tools and a free V2V converter; no bulk export of StarWind devices
Stack coupling	2	Controller VM or Windows service plus a dedicated sync and heartbeat network; several hypervisors supported
Hardware / cloud coupling	0.5	Any x86 server; no cloud attach found
Skills and tooling coupling	2	StarWind console, PowerShell and StarWindX; small skills pool

Integrator fit: 7.5 / 20

Criterion	Score	Basis
Partner programme openness	3	VAR programme and channel purchasing exist; terms not published
Multi-tenancy and self-service	1	Per-LUN presentation only; no tenancy or portal
API and infrastructure-as-code	2	PowerShell and StarWindX; no REST API, Terraform or Ansible provider found
Skills and certification	1.5	No current certification programme found; free tools and a community forum

AI leverage: 2.0 / 20

How the product uses AI, scored per year like capability. Only GA counts.

Criterion	2019	2022	Today	Latest step
AI workload infrastructure	0	0	1	2026: Build 20089: NVMe-oF shared storage usable by GPU hosts; no AI-specific validation
AI platform stack	0	0	0	2015: None
AI-assisted operations	0	0	0	2015: None
Agent openness	1	1	1	2015: PowerShell and StarWindX library only; no REST API or MCP server

Year by year: 2015: 1 · 2016: 1 · 2017: 1 · 2018: 1 · 2019: 1 · 2020: 1 · 2021: 1 · 2022: 1 · 2023: 1 · 2024: 1 · 2025: 1 · 2026: 2

AI say-do, 2023 to 2026: 2 AI items announced; 0 GA, 0 still preview, 2 pending, 0 dropped. Both items are DataCore's: the AI-enabled management layer targeted for fall 2025 and the agent control plane that is to reach StarWind in 2027.

StarWind has no AI of its own; the AI promises come from DataCore and have not reached the product. The control plane with an agent layer is in preview for other DataCore products and is not expected for StarWind before summer 2027.

Reading

StarWind scores where small sites need it: a synchronous two or three node mirror that now serves vSphere, Hyper-V, oVirt, Proxmox VE and XCP-ng, with NVMe-oF added in 2026. It loses points on data services, security and data protection, partly because the product lacks them and partly because the public record does not document them; the evidence grade says so. The commercial picture changed more than the product in 2025: a new owner, term licences by default and a roadmap that merges StarWind into a platform due in 2027. A buyer should check the licence terms offered today against the perpetual contract they may hold.

Open questions and items to re-score

Release notes, pricing and requirements were read through a text mirror; a browser re-read of starwindsoftware.com is due.
Limits of the free edition (nodes, capacity, hypervisors) are not stated on the pricing page.
No support or end-of-support policy is published; the date perpetual licences stopped is unknown.
Whether snapshots, compression, deduplication and encryption at rest exist in the current build is undocumented in the pages read.
Customer count differs by source (63,800 against about 2,000); not used for scoring.
Support for Nutanix AHV and KubeVirt platforms was not found.

	’22	’23	’24	’26
Data services core		1
Resilience and HA	1
Performance and protocols		2		1
Hypervisor integration		3		2
Scale and topology
Data protection and DR
Security	2
Operations and automation
Hardware and deployment freedom			1
Kubernetes and containers