Is Longhorn or SST better?

Neither clearly leads. Longhorn starts at Free and SST at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Longhorn or SST?

Longhorn starts at Free and SST at Free.

Does Longhorn or SST run on more platforms?

Longhorn runs on Linux, Kubernetes. SST runs on AWS, Cloudflare, Node.js.

Can I use Longhorn for free?

Both have a free tier, so you can try either at no cost before committing.

What is Longhorn best used for?

Longhorn is most often used for an on-premises kubernetes cluster with local disks and no san that needs replicated persistent volumes, edge sites where shipping a storage array is impractical and three nodes is the whole cluster, a k3s deployment where the storage layer must be light enough to run alongside the workloads, a team that wants snapshots and s3 backups of persistent volumes without paying per-node storage licences. Of those, an on-premises kubernetes cluster with local disks and no san that needs replicated persistent volumes and edge sites where shipping a storage array is impractical and three nodes is the whole cluster are not what SST is typically brought in for.

What can Longhorn do that SST cannot?

Longhorn covers Per-volume controllers, Synchronous replication, Snapshots and backups, Volume expansion. SST covers Single config file, Resource linking, Local development, Multi-cloud support.

Cloud · head to head

Longhorn vs SST

Longhorn

Cloud

Open source distributed block storage for Kubernetes, incubating at the CNCF

From: Free
Rated: -

Full review Website

SST

Cloud

Build full-stack apps on your own infrastructure

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: Longhorn there is no vendor and no SLA, so a production incident at three in the morning is your own problem unless you buy SUSE Rancher Prime support separately.; SST primarily optimized for AWS with Cloudflare support
They diverge on capability: Longhorn covers Per-volume controllers, SST covers Single config file.
Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Longhorn and SST actually diverge.

Attributes where Longhorn and SST differ
Attribute	Longhorn	SST
Pricing model	Open source, no licence fee	Unknown
Platforms	Linux, Kubernetes	AWS, Cloudflare, Node.js

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Cloud).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Longhorn

Per-volume controllers
Synchronous replication
Snapshots and backups
Volume expansion
Disaster recovery volumes
Web interface

Only in SST

Single config file
Resource linking
Local development
Multi-cloud support
Multiple deployment stages
VPC tunneling

What people use each for

The jobs each tool is most often brought in to do.

Longhorn

An on-premises Kubernetes cluster with local disks and no SAN that needs replicated persistent volumesnot SST
Edge sites where shipping a storage array is impractical and three nodes is the whole clusternot SST
A K3s deployment where the storage layer must be light enough to run alongside the workloadsnot SST
A team that wants snapshots and S3 backups of persistent volumes without paying per-node storage licencesnot SST

SST

Deploying Next.js frontends with serverless backendsnot Longhorn
Managing databases and storage alongside application codenot Longhorn
Creating staging environments for feature testingnot Longhorn

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Longhorn

There is no vendor and no SLA, so a production incident at three in the morning is your own problem unless you buy SUSE Rancher Prime support separately.
Synchronous replication across nodes means write latency depends on the slowest replica and the network between nodes, which makes it a poor fit for latency-sensitive databases.
Every replica is a full copy, so three-way replication consumes three times the raw capacity, unlike erasure-coded systems that are far more space efficient.
It is designed for block storage on modest clusters and does not scale to the node counts or throughput that Ceph or a commercial array handles, so growth eventually forces a migration.
Recovery from certain degraded states, such as a volume stuck detaching or replicas failing to rebuild, requires manual intervention and knowledge of Longhorn internals that is not widely held.

SST

Primarily optimized for AWS with Cloudflare support
Learning curve for developers unfamiliar with infrastructure concepts
Limited documentation for some advanced use cases

Pricing, plan by plan

Longhorn

Free

LonghornFree
- Apache 2.0 licensed, no licence fee
- Community support via GitHub and Slack only
- No vendor SLA or escalation path

SST

Free

No published plan breakdown. See the SST review.

Which should you pick?

Choose Longhorn if

You need per-volume controllers.
You want to start without paying.
You work on Linux, Kubernetes.
You also want synchronous replication.

Longhorn review

Choose SST if

You need single config file.
You want to start without paying.
You work on AWS, Cloudflare, Node.js.
You also want resource linking.

SST review

Questions people ask

Is Longhorn or SST better?: Neither clearly leads. Longhorn starts at Free and SST at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Longhorn or SST?: Longhorn starts at Free and SST at Free.
Does Longhorn or SST run on more platforms?: Longhorn runs on Linux, Kubernetes. SST runs on AWS, Cloudflare, Node.js.
Can I use Longhorn for free?: Both have a free tier, so you can try either at no cost before committing.
What is Longhorn best used for?: Longhorn is most often used for an on-premises kubernetes cluster with local disks and no san that needs replicated persistent volumes, edge sites where shipping a storage array is impractical and three nodes is the whole cluster, a k3s deployment where the storage layer must be light enough to run alongside the workloads, a team that wants snapshots and s3 backups of persistent volumes without paying per-node storage licences. Of those, an on-premises kubernetes cluster with local disks and no san that needs replicated persistent volumes and edge sites where shipping a storage array is impractical and three nodes is the whole cluster are not what SST is typically brought in for.
What can Longhorn do that SST cannot?: Longhorn covers Per-volume controllers, Synchronous replication, Snapshots and backups, Volume expansion. SST covers Single config file, Resource linking, Local development, Multi-cloud support.

Answered from the vendors’ own pages

Longhorn: Who do we call when it breaks?

Nobody, unless you buy SUSE Rancher Prime, which includes commercial support for Longhorn. This is the decisive question for production use.

SST: Is SST free?

Yes, SST is open source and free. You only pay for cloud resources from AWS and other providers.

Source

Longhorn: How much capacity does replication cost?

Full copies, so three replicas means three times the raw capacity. Budget accordingly rather than assuming erasure coding efficiency.

SST: What cloud providers does SST support?

SST supports over 150 providers through built-in AWS and Cloudflare components, plus Pulumi and Terraform providers.

Source

Longhorn: Is it suitable for production databases?

For modest workloads yes, but synchronous replication adds write latency and high-transaction databases usually want something faster.

Longhorn vs SST

Longhorn

SST

The short version

Where they differ

What each one covers

Only in Longhorn

Only in SST

What people use each for

Longhorn

SST

Where each one falls short

Longhorn

SST

Pricing, plan by plan

Longhorn

SST

Which should you pick?

Choose Longhorn if

Choose SST if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Longhorn

More on SST

Keep looking

Other head to heads