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Lambda (AWS Serverless) vs TrueNAS

Lambda (AWS Serverless) logo

Lambda (AWS Serverless)

Software

Run code without thinking about servers

From
Free
Rated
-
Full reviewWebsite
TrueNAS logo

TrueNAS

Software

Open-source ZFS storage operating system for network-attached storage

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Lambda (AWS Serverless) billed on two axes at once, $0.20 per million requests plus $0.0000166667 per GB-second of duration, so memory settings change the bill as much as traffic does; TrueNAS requires self-hosting on x86 hardware, no managed cloud offering; organisations must provision, configure, and maintain their own infrastructure

Where they differ

Only the attributes on which Lambda (AWS Serverless) and TrueNAS actually diverge.

Attributes where Lambda (AWS Serverless) and TrueNAS differ
AttributeLambda (AWS Serverless)TrueNAS
Pricing modelusage-basedopen-source
PlatformsWeb, ApiSelf-hosted, Linux, Web, API
Founded2014Unknown

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

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 Lambda (AWS Serverless)

  • Function-as-a-Service
  • Event-driven execution
  • Auto-scaling
  • Pay-per-use
  • Multiple languages
  • Concurrency limits
  • Dead Letter Queues
  • Environment variables

Only in TrueNAS

Nothing recorded that Lambda (AWS Serverless) does not also cover.

What people use each for

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

Lambda (AWS Serverless)

  • Event-driven functions without managing serversnot TrueNAS
  • API backends behind API Gatewaynot TrueNAS
  • Processing S3, DynamoDB, SQS and Kinesis eventsnot TrueNAS
  • Scheduled jobs without a always-on instancenot TrueNAS
  • Edge compute through Lambda@Edgenot TrueNAS

TrueNAS

  • On-premises backup and archival storage for enterprisesnot Lambda (AWS Serverless)
  • Home lab and small business network-attached storagenot Lambda (AWS Serverless)
  • Media server storage for video, photo, and document librariesnot Lambda (AWS Serverless)
  • Disaster recovery and business continuity replicationnot Lambda (AWS Serverless)
  • S3-compatible object storage for cloud-native applicationsnot Lambda (AWS Serverless)
  • High-availability storage clusters for datacentresnot Lambda (AWS Serverless)

Where each one falls short

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

Lambda (AWS Serverless)

  • Billed on two axes at once, $0.20 per million requests plus $0.0000166667 per GB-second of duration, so memory settings change the bill as much as traffic does
  • Provisioned concurrency, used to avoid cold starts, is charged separately at $0.0000041667 per GB-second whether or not the function runs
  • Ephemeral storage beyond the included 512 MB is metered
  • Lambda@Edge costs $0.60 per million requests, three times the standard request rate
  • VPC use and cross-region data transfer carry EC2 charges on top

TrueNAS

  • Requires self-hosting on x86 hardware, no managed cloud offering; organisations must provision, configure, and maintain their own infrastructure
  • ZFS filesystem entails high memory requirements (1 GB RAM per 1 TB of storage recommended), increasing costs for large deployments
  • Limited ARM/embedded support; Community Edition is primarily x86-64, reducing deployment options for edge installations
  • Clustering and replication setup requires operational expertise; misconfiguration can lead to data loss
  • Enterprise support and SLA guarantees require paid subscriptions; Community Edition relies on peer-based forums

Pricing, plan by plan

Lambda (AWS Serverless)

Free
  • Free TierFree
    • 1M free requests/month
    • 400,000 GB-seconds/month
    • Always free

TrueNAS

Free

No published plan breakdown. See the TrueNAS review.

Which should you pick?

Choose Lambda (AWS Serverless) if

  • You need function-as-a-service.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want event-driven execution.
Lambda (AWS Serverless) review

Choose TrueNAS if

  • You want to start without paying.
  • You work on Self-hosted, Linux, Web, API.
TrueNAS review

Questions people ask

Is Lambda (AWS Serverless) or TrueNAS better?
Neither clearly leads. Lambda (AWS Serverless) starts at Free and TrueNAS at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Lambda (AWS Serverless) or TrueNAS?
Lambda (AWS Serverless) starts at Free and TrueNAS at Free.
Does Lambda (AWS Serverless) or TrueNAS run on more platforms?
Lambda (AWS Serverless) runs on Web, Api. TrueNAS runs on Self-hosted, Linux, Web, API.
Can I use Lambda (AWS Serverless) for free?
Both have a free tier, so you can try either at no cost before committing.
What is Lambda (AWS Serverless) best used for?
Lambda (AWS Serverless) is most often used for event-driven functions without managing servers, api backends behind api gateway, processing s3, dynamodb, sqs and kinesis events, scheduled jobs without a always-on instance. Of those, event-driven functions without managing servers and api backends behind api gateway are not what TrueNAS is typically brought in for.
What can Lambda (AWS Serverless) do that TrueNAS cannot?
Lambda (AWS Serverless) covers Function-as-a-Service, Event-driven execution, Auto-scaling, Pay-per-use.

Answered from the vendors’ own pages

TrueNAS: What is the cost of TrueNAS Community Edition?

TrueNAS Community Edition is free and open-source. There are no licensing fees, but organisations must purchase and maintain their own x86 hardware. Enterprise Edition requires paid support contracts for production environments.

Source
TrueNAS: Can I replicate TrueNAS data between sites?

Yes. TrueNAS supports snapshot-based replication over network links, enabling disaster recovery and business continuity. Replication can occur between Community Edition systems or between Enterprise Appliances.

Source
TrueNAS: What storage protocols does TrueNAS support?

TrueNAS simultaneously supports NFS (network file system), SMB (Windows file sharing), iSCSI (block storage), and S3-compatible object storage, all from the same storage pool.

Source
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