OCI File Storage Calculator
Price OCI File Storage including the snapshot capacity that daily change and retention quietly accumulate.
Inputs
Share of the file system that changes each day — this is what snapshots keep.
File Storage bills snapshots at the same per-GB rate as active data.
Mount targets themselves carry no capacity charge.
Monthly Cost
$213.00
Active Data Charge
$150.00
Snapshot Charge
$63.00
Snapshot Capacity Retained
210GB
Total Billed Capacity
710GB
Total Billed Capacity in Bytes
710 GiB
Snapshots as a Share of the Bill
29.6%
Cost per Client
$5.33
Step by step
Values used
Active file data = 500 GB; Daily change rate = 3 %; Snapshot retention = 14 days; Price per GB-month = 0.3000 USD/GB-month; Mount targets = 1 mount targets; Clients mounting the file system = 40 clients
OCI File Storage
snapshot capacity = active GB × daily change % × retention days; monthly = (active GB + snapshot GB) × per-GB price.
Monthly Cost
= 213.00
Active Data Charge
= 150.00
Snapshot Charge
= 63.00
Snapshot Capacity Retained
= 210 GB
Total Billed Capacity
= 710 GB
Total Billed Capacity in Bytes
= 762,356,695,040
How it works
File Storage charges one per-GB-month rate for everything it holds, and snapshots are not free capacity: each daily snapshot pins the blocks that changed that day, so the retained volume is the daily delta multiplied by the retention window. At a 3% daily change rate, a fortnight of snapshots adds around 42% on top of the active data. Snapshot growth is the usual reason a file system bill is double what the active data suggests, and the fix is retention policy rather than capacity — halving retention halves that component immediately. Confirm the per-GB price in the Oracle Cloud cost estimator for your region, and remember mount targets add no capacity charge of their own.
Formula
OCI File Storage
snapshot capacity = active GB × daily change % × retention days; monthly = (active GB + snapshot GB) × per-GB price.
- daily change %
- Fraction of the file system rewritten each day, which snapshots must retain
- retention days
- How long each daily snapshot is kept
- snapshot capacity
- Extra billed GB held by the snapshot chain
Frequently Asked Questions
How is OCI File Storage calculated?
snapshot capacity = active GB × daily change % × retention days; monthly = (active GB + snapshot GB) × per-GB price. File Storage charges one per-GB-month rate for everything it holds, and snapshots are not free capacity: each daily snapshot pins the blocks that changed that day, so the retained volume is the daily delta multiplied by the retention window. At a 3% daily change rate, a fortnight of snapshots adds around 42% on top of the active data.
Why does OCI File Storage matter?
Snapshot growth is the usual reason a file system bill is double what the active data suggests, and the fix is retention policy rather than capacity — halving retention halves that component immediately. Confirm the per-GB price in the Oracle Cloud cost estimator for your region, and remember mount targets add no capacity charge of their own.
What values do I need to enter?
This calculator takes 6 inputs: Active file data, Daily change rate, Snapshot retention, Price per GB-month, Mount targets, Clients mounting the file system. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.