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Developer Tools · head to head

IAR Embedded Workbench vs Longhorn

IAR Embedded Workbench logo

IAR Embedded Workbench

Developer Tools

Complete toolchain for embedded software development

From
On request
Free plan
No
Full reviewWebsite
Longhorn logo

Longhorn

Cloud

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

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Longhorn has a free tier, so it costs nothing to try first.
  • Each has a real cost: IAR Embedded Workbench no pricing information published on product page; prospective customers directed to free trial or sales contact only; 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.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which IAR Embedded Workbench and Longhorn actually diverge.

Attributes where IAR Embedded Workbench and Longhorn differ
AttributeIAR Embedded WorkbenchLonghorn
Starting priceOn requestFree
Pricing modelquoteOpen source, no licence fee
Free tierNoYes
PlatformsWebLinux, Kubernetes
CategoryDeveloper ToolsCloud

Identical on both: user rating (Not yet rated).

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 IAR Embedded Workbench

Nothing recorded that Longhorn does not also cover.

Only in Longhorn

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

What people use each for

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

IAR Embedded Workbench

  • Embedded software development and debuggingnot Longhorn
  • Compiler and linker tools for embedded systemsnot Longhorn
  • Multi-architecture embedded development supportnot Longhorn

Longhorn

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

Where each one falls short

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

IAR Embedded Workbench

  • No pricing information published on product page; prospective customers directed to free trial or sales contact only
  • Pricing model not specified; customers must request quote or try free trial to understand licensing costs
  • Embedded development tools typically require expensive licenses, but specific IAR costs unavailable online

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.

Pricing, plan by plan

IAR Embedded Workbench

On request

No published plan breakdown. See the IAR Embedded Workbench review.

Longhorn

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

Which should you pick?

Choose IAR Embedded Workbench if

Nothing in the data separates IAR Embedded Workbench from Longhorn on the points above - pick on price and on how each one feels to use.

IAR Embedded Workbench review

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

Questions people ask

Is IAR Embedded Workbench or Longhorn better?
Neither clearly leads. IAR Embedded Workbench starts at On request and Longhorn at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, IAR Embedded Workbench or Longhorn?
Longhorn has a free tier; the other does not. Paid plans start at On request for IAR Embedded Workbench and Free for Longhorn.
Does IAR Embedded Workbench or Longhorn run on more platforms?
IAR Embedded Workbench runs on Web. Longhorn runs on Linux, Kubernetes.
Can I use Longhorn for free?
Yes. Longhorn has a free tier, so you can try it without paying. IAR Embedded Workbench starts at On request.
What is IAR Embedded Workbench best used for?
IAR Embedded Workbench is most often used for embedded software development and debugging, compiler and linker tools for embedded systems, multi-architecture embedded development support. Of those, embedded software development and debugging and compiler and linker tools for embedded systems are not what Longhorn is typically brought in for.
What can IAR Embedded Workbench do that Longhorn cannot?
Longhorn covers Per-volume controllers, Synchronous replication, Snapshots and backups, Volume expansion.

Answered from the vendors’ own pages

IAR Embedded Workbench: How much does IAR Embedded Workbench cost?

IAR Embedded Workbench pricing is not published on the product page. Prospective customers are directed to free trials or must contact the sales team to request pricing.

Source
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.

IAR Embedded Workbench: Does IAR Embedded Workbench offer a free trial?

Free trials are available for IAR Embedded Workbench evaluation at https://www.iar.com/embedded-development-tools/free-trials, though specific trial length and limitations are not detailed on the product page.

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.

IAR Embedded Workbench: What is the pricing model for IAR Embedded Workbench?

The pricing model is not disclosed on the product page. Customers must contact the sales team to obtain quotes and understand licensing terms.

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.

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