Buckets
Size alerts in TB, and a tidier alerts table
A size threshold can be set in GB or TB, an existing rule opens in the unit it reads naturally in, and removing an alert takes it off the table the moment you press the button.
GB or TB, your choice
Every size alert has a unit picker next to the number, when you add it and when you edit it. A rule set at 10 TB shows as 10 TB, not 10240 GB.
Removing an alert is instant
Pressing the trash icon takes the row away at once. If the removal is refused, the row comes back with the reason. Editing a rule that someone else has just removed tells you so instead of showing an error.