How much Acronis storage will a backup actually use?
Put in the data size, how much of it changes each day, and the retention policy. The model sizes an always-incremental archive under GFS retention, so you can see what a scheme needs before it is switched on.
Storage required
Total stored
2,499 GB
Restore points
16
- Daily change stored
- 26 GB
- Daily upload time
- 16 min
An estimate from a storage model, not a measurement — real consumption depends on how the data actually changes.
Where the storage goes
One base image, then only changed blocks. Older points pin only the data that was overwritten or deleted after them.
| Component | Stored | Share of total |
|---|---|---|
| Base image | 1,785 GB | 71.4% |
| Daily tier | 357 GB | 14.3% |
| Weekly tier | 357 GB | 14.3% |
| Monthly tier | 0 GB | 0% |
| Total | 2,499 GB | 100% |
Retention schemes compared
Your data, compression and churn, with five common retention policies swapped in.
| Scheme | Points | Stored | More than 14 daily |
|---|---|---|---|
| 14 daily | 14 | 2,142 GB | 0% |
| 14 daily + 4 weekly Current | 16 | 2,499 GB | 16.7% |
| 14 daily + 8 weekly | 20 | 3,213 GB | 50% |
| 14 daily + 8 weekly + 6 monthly | 24 | 6,375 GB | 197.6% |
| 14 daily + 8 weekly + 12 monthly | 30 | 10,965 GB | 411.9% |
Storage against daily change
Total stored for each scheme as the daily change grows from 0 to 100 GB/day. The dot is your current inputs.
- 14 daily
- 14 daily + 4 weekly
- 14 daily + 8 weekly
- 14 daily + 8 weekly + 6 monthly
- 14 daily + 8 weekly + 12 monthly
- Your inputs
How the estimate is built
Acronis keeps one full image and then stores only the blocks that change. A retained restore point costs storage only for the data that was overwritten or deleted after it was taken, which is what the churn ratio controls. A file server that fills up and stays full churns almost everything; a system where data is mostly added and kept churns very little, and the older points are nearly free.
- 01
Base image
The protected data after compression. It is stored once, and every restore point is built on top of it.
- 02
Daily tier
Each day's churned change, kept for the number of daily points. Change that only adds data stays in the current image and is not counted again.
- 03
Weekly tier
Weekly points beyond the span the daily points already cover. Each one pins up to seven days of churn, capped at a full image.
- 04
Monthly tier
Monthly points beyond the span the daily and weekly points cover. Each one pins up to thirty days of churn, again capped at a full image.
Upload time is the day's raw change pushed through the upload link at full speed, before compression; real runs share the link with everything else. The comparison table and chart keep your data, compression and churn and swap only the retention policy. Send the copied summary to enquiries@jtit.com.au and we'll turn the scheme into a quote.
Common questions
- How much cloud storage does an Acronis backup use?
- Roughly the compressed size of the data plus the changed blocks kept by each retained restore point. Acronis stores one full image and then only the blocks that change, so the total depends on how much data changes each day, how much of that change overwrites older data, and how many daily, weekly and monthly points are kept.
- What is GFS retention?
- Grandfather-father-son retention keeps a short run of daily restore points, a longer run of weekly points and a longer run again of monthly points. It gives fine-grained recent recovery and coarse long-term recovery without storing every day forever.
- Why does the churn ratio matter?
- An older restore point only costs storage for data that was overwritten or deleted after it was taken. Data that is simply added and kept lives in the current image. A full disk that keeps being rewritten churns almost everything; a growing archive churns very little.
- Is this a quote?
- No. It is a storage estimate from a model. JTIT prices backup on the measured consumption and the workloads involved, so contact us with the copied summary for a real figure.
Want it backed up properly?
Tell us what you're protecting and how far back you need to go. We'll size it, price it, and test the restore before you rely on it.