Billing
Understand the two Cloud-PBS billing models: Fixed and Pay As You Go
Last updated: March 17, 2026
Cloud-PBS offers two billing models depending on the product type.
Fixed (Shared Datastores)
Fixed monthly billing based on the storage tier selected at subscription. The price does not vary with actual usage.
| Storage | Price / month |
|---|---|
| 250 GB | €6 |
| 500 GB | €8 |
| 750 GB | €10 |
| 1 TB | €12 |
| 2 TB | €24 |
| 3 TB | €36 |
| 4 TB | €48 |
| 5 TB | €60 |
| 10 TB | €120 |
| 15 TB | €180 |
- Shared infrastructure (1-AZ)
- Guaranteed dedicated storage on the selected tier
Pay As You Go (S3 Object Storage)
Usage-based billing in 100 GB steps, based on the hourly peak of each bucket.
Pricing
| Replication | Price / 100 GB / month | Price / TB / month |
|---|---|---|
| 1-AZ (Standard) | €1.30 | €13.00 |
| 3-AZ (Multi-AZ) | €2.20 | €22.00 |
How does it work?
- Every hour, the system records the peak usage of your bucket
- Usage is rounded up to the next 100 GB step (minimum 1 step = 100 GB)
- You are billed for each step × each hour of usage
- Prorating is automatic: a bucket created mid-month only pays for the remaining hours
Example: variable usage over one month
A bucket with varying storage over a 30-day month (720 hours):
| Period | Usage | Billed steps | Hours |
|---|---|---|---|
| Days 1 to 10 | 100 GB | 1 | 240h |
| Days 11 to 20 | 300 GB | 3 | 240h |
| Days 21 to 30 | 20 TB | 205 | 240h |
1-AZ calculation (Standard)
| Phase | Calculation | Cost |
|---|---|---|
| 100 GB × 240h | 1 step × 240h × €1.30/730h | €0.43 |
| 300 GB × 240h | 3 steps × 240h × €1.30/730h | €1.28 |
| 20 TB × 240h | 205 steps × 240h × €1.30/730h | €87.58 |
| Total | €89.29 |
3-AZ calculation (Multi-AZ)
| Phase | Calculation | Cost |
|---|---|---|
| 100 GB × 240h | 1 step × 240h × €2.20/730h | €0.72 |
| 300 GB × 240h | 3 steps × 240h × €2.20/730h | €2.17 |
| 20 TB × 240h | 205 steps × 240h × €2.20/730h | €148.27 |
| Total | €151.16 |
Good to know: if the 20 TB usage had been constant for the entire month, the cost would have been €266.50 (1-AZ) or €451.00 (3-AZ). Thanks to hourly prorating, you only pay for 20 TB during the last 10 days.
Comparison
| Fixed | Pay As You Go | |
|---|---|---|
| Billing | Fixed monthly amount | Usage-based (100 GB steps) |
| Minimum | 250 GB | 100 GB (1 step) |
| Prorating | No | Yes (hourly) |
| Replication | 1-AZ | 1-AZ or 3-AZ |