drobo pro repair time

Hi - yesterday I changed one 2tb drive in my drobopro. It was about 12pm…i left it running all day and overnight…the yellow lights are still blinking on all the drives. how long does it usually take the drobo to repair itself?
thaks

24-48 hours is usual

if you use it while it is repairing - it could take MUCH longer

is it safe to turn the computer off during that time? not like I am going to, but just curious

yes that is fine - the drobopro will carry on working (as in, rebuilding) and then put itself into standby when it has finished rebuilding