formatted capacity
[Storage System]
The total amount of bytes available to be written after a system or device has been formatted for use.
Formatted capacity, also called usable capacity, is less than or equal to raw capacity. It does not include areas set aside for system use, spares, RAID parity areas, checksum space, host- or file system-level remapping, "right sizing" of disks, disk labeling and so on. However, it may include areas that are normally reserved–such as snapshot set-asides–if they can alternatively be configured for ordinary data storage by the storage admin.