LINSTOR: Virtualization Storage Ledger 2026 Scorecard

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

Snapshot

Type: product
Owner: LINBIT HA-Solutions GmbH (Vienna, Austria; founded 2001, founder-led, about 50 employees; no outside investors on the record)
Engine: DRBD (GPL-2.0 kernel module, in mainline Linux since 2.6.33) managed by the LINSTOR controller and satellites (GPL-3.0)
Licence: GPL source is public; prebuilt packages and certified repositories need a LINBIT subscription; LINBIT SDS Starter from US$1,000 per two nodes per year, Plus and Enterprise by quote with a per-TB fee; GUI and RDMA transport in Enterprise
Latest release: LINSTOR server 1.35.2 (2026-09-14); DRBD 9.3.4 and 9.2.20 (September 2026); Proxmox connector 8.3.2 (2026-10-05); Operator 2.12.0 (2026-09-22)
Support lifecycle: No published support window per release; DRBD 9.2 series ending after one more release (blog 2026-09-18); subscription SLAs from 8 hour initial response (Plus) to 1 hour emergency 24x7 (Enterprise)
Next milestone: DRBD 9.4 with new features, no date (blog 2026-09-18); DRBD 9 mainline kernel submission targeting Linux 7.2 (blog 2026-04-27), outcome not found
Hypervisors: Proxmox VE (LINBIT connector), XCP-ng (through XOSTOR), OpenNebula, Apache CloudStack (KVM), OpenStack, oVirt and OLVM, OpenShift Virtualization (Red Hat certified 2026-08-11), KubeVirt via CSI; VMware and Hyper-V only as iSCSI, NFS or NVMe-oF clients of the LINBIT VSAN appliance (LINBIT integration pages and blog 2026-07-14)
Tier: Software-defined storage
Archetype: Dependable builder
Evidence grade: A. Release versions and dates come from the GitHub releases and tags of LINBIT/linstor-server and LINBIT/drbd; features from the release notes and LINBIT blog posts; pricing from the LINBIT pricing page (undated). The first release dates of the Proxmox, OpenNebula and CSI integrations were not sourced and are dated to the LINSTOR 1.0 era. Partner terms and certification are not on the record.

Scorecard

Dimension	Score	Direction
Capability today	73.1 / 100	higher is better
Momentum since end of 2022	+4.5 points (2015 to 2022: +26.0)	higher is better
Credibility	17.0 / 25	higher is better
Commercial risk	8.0 / 25	lower is better
Technical lock-in	5.0 / 25	lower is better
Integrator fit	9.5 / 20	higher is better
AI leverage	3.0 / 20	higher is better
Ledger Index	61.4 / 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	3	3.5	3.5
Resilience and HA (15)	3	3.5	4	4
Performance and protocols (12)	2	3	3.5	3.5
Hypervisor integration (12)	2	3	3	4
Scale and topology (10)	3	3.5	3.5	3.5
Data protection and DR (10)	2	2.5	3.5	3.5
Security (8)	1	2	2	2.5
Operations and automation (8)	1.5	2.5	3	3.5
Hardware and deployment freedom (5)	4	4	4.5	4.5
Kubernetes and containers (5)	0	2.5	4	4.5
Total / 100	42.6	59.6	68.6	73.1

Year by year: 2015: 42.6 · 2016: 42.6 · 2017: 42.6 · 2018: 45.9 · 2019: 59.6 · 2020: 65.6 · 2021: 68.1 · 2022: 68.6 · 2023: 68.6 · 2024: 69.4 · 2025: 69.4 · 2026: 73.1

What moved the score

Year	Domain	Change	Points	Trigger
2018	Data protection and DR	2 → 2.5	+1.0	0.7: snapshots and DRBD Proxy support in LINSTOR
2018	Data services core	2 → 2.5	+1.5	LINSTOR 0.7: ZFS thin pools, snapshot rollback API
2018	Operations and automation	1.5 → 2	+0.8	LINSTOR 0.2: central controller with CLI
2019	Data services core	2.5 → 3	+1.5	LINSTOR 1.0: resource groups as per-volume placement policy
2019	Hypervisor integration	2 → 3	+2.4	LINSTOR 1.0 REST API with Proxmox VE, OpenNebula and OpenStack drivers (first driver release dates unsourced)
2019	Kubernetes and containers	0 → 2.5	+2.5	LINSTOR CSI driver and Piraeus project (first release dates unsourced)
2019	Operations and automation	2 → 2.5	+0.8	1.0: REST API
2019	Performance and protocols	2 → 3	+2.4	0.9.6: NVMe-oF layer; iSCSI and NFS through LINBIT HA gateways; RDMA transport licensed
2019	Resilience and HA	3 → 3.5	+1.5	1.2: automatic tiebreaker gives two-node clusters quorum
2019	Scale and topology	3 → 3.5	+1.0	1.2: tiebreaker for two-node clusters; diskless client nodes separate compute from storage; no formal node maximum published
2019	Security	1 → 2	+1.6	0.9.13: HTTPS and LDAP for the controller; LUKS layer for encrypted volumes
2020	Data protection and DR	2.5 → 3	+1.0	1.8: snapshot shipping between clusters
2020	Data services core	3 → 3.5	+1.5	1.10: IOPS and bandwidth throttling; 1.4 and 1.6: write-cache and dm-cache layers; no native deduplication or erasure coding
2020	Operations and automation	2.5 → 3	+0.8	1.8: Prometheus metrics; Enterprise GUI
2020	Performance and protocols	3 → 3.5	+1.2	1.4 and 1.6: write cache and dm-cache layers; 1.14 (2021): remote SPDK; no SMB, Fibre Channel unverified
2020	Resilience and HA	3.5 → 4	+1.5	1.7: new autoplacer with failure-domain aware placement; 1.10: auto-evict of failed nodes
2021	Data protection and DR	3 → 3.5	+1.0	1.15: backup shipping to S3; 1.19 (2022): scheduled backup shipping; no immutability or changed-block tracking
2021	Kubernetes and containers	2.5 → 4	+1.5	1.16: Kubernetes CRD database backend; LINSTOR Operator lifecycle
2022	Hardware and deployment freedom	4 → 4.5	+0.5	1.20: Amazon EBS backed storage pools add cloud deployment
2024	Security	2 → 2.5	+0.8	1.27: user-supplied encryption passphrases; 1.33 (2025): systemd-creds master passphrase; 1.34 (2026): API tokens, access-control subsystem removed; no key management service
2026	Hypervisor integration	3 → 4	+2.4	Red Hat certification for OpenShift Virtualization (2026-08-11); 1.35: live-migration aware make-available; Proxmox connector 8.3
2026	Kubernetes and containers	4 → 4.5	+0.5	Operator 2.10: volume group snapshots; Red Hat certified operator for OpenShift Virtualization with RWX block for live migration
2026	Operations and automation	3 → 3.5	+0.8	1.34: token authentication and non-root controller; 1.35: controller HA script and automatic daily database export; Ansible inventory support

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
2023-03	1.21: automatic resync-after handling	Resilience	C
2023-08	1.24: Windows Storage Spaces support, backup shipping queues, Java 17	Data protection	C
2024-01	1.26: Prometheus metrics in the controller, resource balancing task	Operations	C
2024-04	1.27: user-supplied encryption passphrases; Java 21 support	Security	C
2024-07	1.28: autoplacer option to place replicas on different nodes	Resilience	C
2024-12	1.30: backup to a target resource group, clones across storage pools	Data protection	C
2025-04	1.31: replication-state reporting	Operations	C
2025-09	1.32: snapshot shipping and EXOS support removed in favour of backup shipping	Packaging	P
2025-12	1.33: systemd-creds master passphrase, automatic block size, snapshot shipment options	Security	C
2026-01	DRBD 9.3.0: resync without replication by default, bitmap granularity up to 1M; RHEL 7 era kernels dropped	Resilience	V
2026-04	DRBD 9 submitted for the mainline Linux kernel, targeting Linux 7.2	Packaging	U
2026-06	1.34: API token authentication, diskless client peers, non-root controller; etcd removed, Java 21 required	Security	C
2026-07	Operator 2.10.6 with volume group snapshots	Kubernetes	C
2026-08	1.35: live-migration support in make-available, thick LVM snapshots, controller HA setup script	Hypervisor integration	C
2026-08	LINSTOR Red Hat certified for OpenShift Virtualization 4.12 to 4.22	Hypervisor integration	M
2026-09	1.35.1: automatic daily database export; Operator 2.12.0	Operations	C
2026-09	DRBD 9.2 series ending; DRBD 9.4 planned with new features, no date	Packaging	V

Centre of gravity: Resilience (3), Operations (3), Security (3)
Blind spots (no items): Data services, Performance, Scale, Hardware, Licensing, AI
Driver mix: Vision 12%, Customer need 71%, Market window 6%, Upstream 6%, Portfolio 6%
Idea-to-need index: 0.13 (0 = demand-pulled, 1 = thesis-pushed)

Credibility: 17.0 / 25

Criterion	Score	Basis
Cadence	4	Dated GitHub releases, LINSTOR minors every two to four months with patch releases in between; no published rhythm
Roadmap transparency	3	Open repositories, public changelog and blog; removals announced one release ahead; no dated roadmap
Say-do	3.5	Token authentication and the OpenShift Virtualization certification shipped as announced; the DRBD 10 preview of 2020 never became a release; 9.4 undated
Velocity	3.5	1.34 and 1.35 each carried several capabilities; 2023 and 2025 were mostly maintenance
Lifecycle stability	3	Breaking changes most years: etcd removal and Java 21 in 1.34, no downgrade from 1.35, 9.3 dropping old kernels, 9.2 ending

Commercial risk: 8.0 / 25 (lower is better)

Criterion	Score	Basis
Price and licence volatility	1	GPL unchanged; a published Starter price; no change found since 2023
Purchase constraints	1.5	Any node count from two; Starter is priced, Plus and Enterprise by quote with a per-TB fee; GUI and RDMA gated to Enterprise
Channel and access	2	Source is open; prebuilt packages and certified repositories only with a subscription
Owner stability	1.5	Independent founder-led company since 2001; ownership undisclosed
Cost of staying supported	2	Subscription needed for packages and support; fixes land in public source first; upgrades free

Technical lock-in: 5.0 / 25 (lower is better)

Criterion	Score	Basis
Formats	0.5	LVM or ZFS volumes with a small DRBD metadata area; VM disks keep the hypervisor's format
Export path	1	Standard Linux tooling; snapshot and backup shipping to S3 or another cluster
Stack coupling	1.5	DRBD kernel module plus a Java controller and satellites; integration plug-ins are LINBIT or community maintained
Hardware / cloud coupling	0.5	Any Linux x86 server; RDMA transport needs an Enterprise licence
Skills and tooling coupling	1.5	Linux, LVM or ZFS and DRBD administration; open CLI and REST API; smaller pool than Ceph

Integrator fit: 9.5 / 20

Criterion	Score	Basis
Partner programme openness	2.5	Integration partners across hypervisors and clouds; reseller terms not published
Multi-tenancy and self-service	1.5	Resource groups and storage pools separate workloads; Kubernetes namespaces via CSI; no tenant portal
API and infrastructure-as-code	3.5	REST API with tokens, Python client, Ansible inventory support, Kubernetes Operator and CSI; no Terraform provider found
Skills and certification	2	LINBIT training and documentation; no certification found

AI leverage: 3.0 / 20

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

Criterion	2019	2022	Today	Latest step
AI workload infrastructure	1	1	1	2019: 0.9.6: NVMe-oF layer; DRBD RDMA transport under an Enterprise licence; a 2026 vLLM on Kubernetes demonstration, no AI-specific validation
AI platform stack	0	0	0	2015: None
AI-assisted operations	0	0	0	2015: None
Agent openness	2	2	2	2019: LINSTOR 1.0 REST API; token authentication in 1.34 (2026); no MCP server

Year by year: 2015: 1 · 2016: 1 · 2017: 1 · 2018: 1 · 2019: 3 · 2020: 3 · 2021: 3 · 2022: 3 · 2023: 3 · 2024: 3 · 2025: 3 · 2026: 3

AI say-do, 2023 to 2026: 0 AI items announced; 0 GA, 0 still preview, 0 pending, 0 dropped. LINBIT has announced no AI features; a 2026 blog describes an AI-assisted experiment with DRBD in user space as an idea only.

LINSTOR has no AI in the product and makes no AI promises; LINBIT uses AI tooling in DRBD development and wrote one exploratory blog post. The agent surface is the REST API with token authentication.

Reading

LINSTOR scores as a strong, open block layer rather than a full storage system: N-way synchronous replication with quorum and failure-domain placement, snapshot and S3 backup shipping, and the widest hypervisor list in this group now that Red Hat has certified it for OpenShift Virtualization. The gaps are data services (no native deduplication or erasure coding), file protocols (only through the separate VSAN appliance) and key management. It is the lowest-risk purchase in the group: GPL code, a published entry price and a founder-owned vendor, offset by yearly breaking changes in the controller. A buyer should check the upgrade notes of every minor, since 1.34 and 1.35 both removed things.

Open questions and items to re-score

DRBD 9.3.0 date: GitHub tag 2026-01-21 against a Wikipedia date of 2025-12-01.
Whether DRBD 9 merged into mainline Linux 7.2 as targeted was not found.
First release dates of the Proxmox, OpenNebula and CSI integrations are unsourced; the LINBIT HCI page returned 404.
No published maximum node count; the Fibre Channel gateway claim on the VSAN page is unverified.
Price history since 2023 and partner programme terms are not on the record.
Harvester and Nutanix AHV support were not found.

	’18	’19	’20	’21	’22	’24	’26
Data services core	1		1
Resilience and HA			2
Performance and protocols		2	3
Hypervisor integration		3					1
Scale and topology
Data protection and DR	2			2
Security						1
Operations and automation	3						2
Hardware and deployment freedom					1
Kubernetes and containers		1		1			3