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Apple Time Machine vs Proxmox Backup Server

Apple Time Machine logo

Apple Time Machine

Backup

Built-in backup for every Mac

From
Free
Rated
-
Full reviewWebsite
Proxmox Backup Server logo

Proxmox Backup Server

Backup

Deduplicating backup server for virtual machines, containers and Linux hosts, with verification built in

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Apple Time Machine apple states the Time Machine backup disk should be used only for Time Machine backups and not for storing other files, unless you split it into a separate APFS volume; Proxmox Backup Server there is no Windows client, so physical Windows machines must be backed up by something else and the estate ends up with two backup products.
  • They diverge on capability: Apple Time Machine covers Automatic backup, Proxmox Backup Server covers Deduplicated chunk store.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Apple Time Machine and Proxmox Backup Server actually diverge.

Attributes where Apple Time Machine and Proxmox Backup Server differ
AttributeApple Time MachineProxmox Backup Server
Pricing modelfreeOpen source, no licence fee
PlatformsMacLinux
Founded1976Unknown

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

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 Apple Time Machine

  • Automatic backup
  • Hourly snapshots
  • Visual restore interface
  • Network backup
  • Encryption
  • System restore
  • macOS
  • AirPort Time Capsule

Only in Proxmox Backup Server

  • Deduplicated chunk store
  • Incremental guest backups
  • Client side encryption
  • Verification jobs
  • Remote sync
  • Live restore and file level restore

What people use each for

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

Apple Time Machine

  • Automatic versioned local backups of a Mac to an external drivenot Proxmox Backup Server
  • Restoring a Mac or migrating to a new one from a local backup historynot Proxmox Backup Server

Proxmox Backup Server

  • Backing up a Proxmox VE cluster with incremental block level backups of running guestsnot Apple Time Machine
  • Replacing a backup product whose licence is priced per socket or per terabyte on a virtualisation estatenot Apple Time Machine
  • Proving backup integrity on a schedule rather than discovering corruption during a restorenot Apple Time Machine
  • Keeping an encrypted second copy on a remote server or on tape without a third party servicenot Apple Time Machine

Where each one falls short

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

Apple Time Machine

  • Apple states the Time Machine backup disk should be used only for Time Machine backups and not for storing other files, unless you split it into a separate APFS volume
  • Apple recommends the Time Machine volume be twice the storage capacity of the Mac being backed up
  • It requires an attached external storage device or network disk; there is no built-in cloud destination
  • It backs up Macs only

Proxmox Backup Server

  • There is no Windows client, so physical Windows machines must be backed up by something else and the estate ends up with two backup products.
  • The datastore is millions of small chunk files, so it needs storage with real input and output capability and performs poorly on a single spinning disk or an SMB or NFS share.
  • Deduplication is per datastore, so splitting workloads across datastores for retention or tenancy reasons multiplies the storage those workloads consume.
  • Garbage collection depends on file access time semantics on the underlying filesystem, so a datastore mounted with the wrong options can fail to reclaim space or, worse, behave unpredictably.
  • Subscriptions are priced per CPU socket per year, so a backup server consolidated onto fewer larger dual socket machines pays twice per host for the supported repository.

Pricing, plan by plan

Apple Time Machine

Free
  • Built-inFree
    • Automatic backup
    • Visual restore
    • Network backup

Proxmox Backup Server

Free
  • No subscriptionFree
    • Full functionality with no capacity limit
    • Community package repository
    • Community forum support
  • Subscription$undefined/year
    • Priced per CPU socket per year
    • Access to the enterprise package repository
    • Vendor support tickets

Which should you pick?

Choose Apple Time Machine if

  • You need automatic backup.
  • You want to start without paying.
  • You work on Mac.
  • You also want hourly snapshots.
Apple Time Machine review

Choose Proxmox Backup Server if

  • You need deduplicated chunk store.
  • You want to start without paying.
  • You work on Linux.
  • You also want incremental guest backups.
Proxmox Backup Server review

Questions people ask

Is Apple Time Machine or Proxmox Backup Server better?
Neither clearly leads. Apple Time Machine starts at Free and Proxmox Backup Server at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Apple Time Machine or Proxmox Backup Server?
Apple Time Machine starts at Free and Proxmox Backup Server at Free.
Does Apple Time Machine or Proxmox Backup Server run on more platforms?
Apple Time Machine runs on Mac. Proxmox Backup Server runs on Linux.
Can I use Apple Time Machine for free?
Both have a free tier, so you can try either at no cost before committing.
What is Apple Time Machine best used for?
Apple Time Machine is most often used for automatic versioned local backups of a mac to an external drive, restoring a mac or migrating to a new one from a local backup history. Of those, automatic versioned local backups of a mac to an external drive and restoring a mac or migrating to a new one from a local backup history are not what Proxmox Backup Server is typically brought in for.
What can Apple Time Machine do that Proxmox Backup Server cannot?
Apple Time Machine covers Automatic backup, Hourly snapshots, Visual restore interface, Network backup. Proxmox Backup Server covers Deduplicated chunk store, Incremental guest backups, Client side encryption, Verification jobs.

Answered from the vendors’ own pages

Apple Time Machine: Does Time Machine charge a subscription or licensing fee?

No. Time Machine is a built-in feature of macOS with no subscription or licensing costs.

Source
Proxmox Backup Server: Can it back up machines that are not on Proxmox?

Linux hosts yes, through the client, at file level. Other hypervisors and physical Windows machines are outside its scope.

Apple Time Machine: What storage capacity do I need for Time Machine backups?

Apple recommends using a storage device with at least twice the storage capacity of your Mac. For example, if your Mac has 1TB of storage, your backup disk should ideally have at least 2TB.

Source
Proxmox Backup Server: Is a subscription required?

No. Without one you use the community repository and forum support. The subscription buys the tested enterprise repository and vendor tickets.

Apple Time Machine: How long does Time Machine keep my backups?

Time Machine automatically maintains hourly backups for the past 24 hours, daily backups for the past month, and weekly backups for all previous months. The oldest backups are deleted when your backup disk is full.

Source
Proxmox Backup Server: How do I know a backup will restore?

Run verification jobs. They re-read the stored chunks and mark snapshots verified or failed, which is stronger evidence than a successful backup log.

Proxmox Backup Server: What storage should the datastore be on?

Local disks, ideally with ZFS and enough input and output capacity for many small files. Network shares are supported but routinely disappointing.

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