Upgrading PBS plan capacity

You can upgrade your PBS datastore storage capacity at any time from the client portal, with no downtime and without recreating the datastore.

Your data, configuration, snapshots, and retention policy are fully preserved during the tier change.

Available tiers

Capacity	Price excl. tax / month
250 GB	€2
500 GB	€4
1 TB	€8
2 TB	€16
4 TB	€32
6 TB	€48
8 TB	€64
10 TB	€80

Pricing reference: PBS offer page.

Upgrade procedure

1. Open your PBS service in the client portal
2. Click the Modify plan tab
3. Select the new capacity tier on the slider
4. Verify the chosen capacity and displayed price
5. Confirm the change

The additional capacity is immediately available on the datastore.

Estimating real capacity needs with deduplication

PBS deduplication significantly reduces physical space consumed. To estimate your real need:

Estimated space = (Gross VM size × Number of snapshots kept) × (1 - deduplication rate)

In practice, on typical workloads:

Environment	Typical deduplication rate
VMs with lots of identical data (OS templates, clones)	70 – 90%
Diverse production VMs	50 – 70%
Database or highly varied file backups	20 – 40%

See the ratio in real time

The current deduplication ratio is shown in the Dashboard tab → Deduplication metric (e.g. 6.42×). Use it to refine your estimates.

When to plan a capacity upgrade?

Signs it's time to upgrade:

Signal	Recommended action
Estimated saturation < 30 days	Plan the upgrade
Usage > 80%	Upgrade before reaching the limit
Need to extend retention	Calculate the additional space required
Adding new Proxmox nodes	Anticipate the additional volume

Safety margin

Always keep at least 20% free space on your datastore. This margin absorbs temporary spikes (snapshot before a major update) and the time lag of an upgrade.

What is preserved during a tier change

• All existing snapshots
• Prune job configuration
• GC schedule
• Verification jobs
• Namespaces and their hierarchy
• Configured tokens and access credentials