btrfs disk usage calculator

Number of devices:

Preset RAID levels

Single
RAID-0
RAID-1
RAID-1c3
RAID-1c4
RAID-10
RAID-5
RAID-6

Note that these are the only parameter settings
supported by btrfs at present.

Replication type

Copies:
Min data stripes:
Max data stripes:
Parity stripes:

Device sizes

Total space for files:
Unusable:

The results shown here do not take into account the space used by metadata, nor any additional unusable space caused by btrfs's block reservations, which are necessary for CoW operation.

Clicking the arrows to change a number doesn't update it immediately. I'll attempt to fix this soon, but until I do, you can make it update by clicking here.

Problems? Comments? Mail me.