Capacity calculator

Project storage growth before the disk is full.

Start from current logical data, add compound monthly growth, planning headroom and the number of physical copies you intend to retain.

Growth

Repeated percentage growth compounds over the planning horizon instead of being added linearly.

Headroom

Filesystems, databases, snapshots and temporary work all behave badly when capacity planning assumes 100% fill.

Copies

Replication and independent backup copies consume physical capacity even when logical user data is unchanged.

Measure

Real growth history is a better input than an arbitrary percentage guess.

Calculated values