no, ive had an error durig an array rebuild, you only lose the that particular sector (i have 10.5 and 7 TB raid5's on my desktop).
like i said, raid5 has come a long way the last 15 years, a error on rebuild does nto drop the whole array anymore, only the data on that part of teh stipe is gone. best to check yoru log if you let it continue on errors though. its an option in most raid configs.
That is not just too simple. Here I've got a bad backplane, and the controlled dropped a disk. When the rebuilding started, a second disk was dropped too, and the array become out of sync. Therefore I would not be able to mount the array again. That's how I came to unRAID world. Its a very sad history with the lost of 5TB of valuable data. RAID5/6 are not suitable to home use, unless maybe for a few users. We do not have redundant PSU, ECC memory, a large SAN for full backup. We use consumer grade products, not server grade ones. In my case, the faulty backplane wans't a Supermicro one, but a Norco.
This is why, IMHO, striped data arrays are evil to home users.
