Click next to the space you want to limit.
Use to set a quota on how large the space can grow and a reservation on how small the space can shrink.
Optional Use to round your input to the nearest half terabyte, gigabyte, megabyte or kilobyte.
If you would like to prevent the space, and all of its snapshots from exceeding a certain size, click next to quota. If you would like a certain amount of space to be reserved for both a space and its snapshots, click next to reservation.
Click to apply the quota and reservation to the space.