@SQLRNNR exactly, although if you were to lose half the drives performance would suck in a big way. Your data is still intact though.
@steve-2 Jones that is, unfortunately a disadvantage of the RAID5. Array rebuild times for R5 and R10 are also a consideration, with lower rebuild times R10 is often the favourite.
-----------------------------------------------------------------------------------------------------------
"Ya can't make an omelette without breaking just a few eggs" 😉