A stripe set (which is commonly known as RAID 0) consists of equal-sized areas of free space on at least 2 disks to as many as 32 disks that are combined in a single volume. When data is written to a stripe set, it is written evenly across all of the disks, one row at a time, in 64-kilobyte (KB) units. When you use a stripe set, you can store a larger amount of data than when you use a single disk. If the computer's disks are accessed simultaneously, a stripe set increases the speed of read actions and write actions to the disks because concurrent input/output (I/O) commands can be issued and processed on all disks simultaneously. A stripe set does not provide any fault tolerance because there is no data redundancy. The system and the boot partitions cannot be part of a stripe set.
D.h. mit vier Platten als Stripe Set konfiguriert fährst Du im Moment das vierfache Risiko eines Datenverlusts... ausser Du machst aus jeder Platte ein einzelnes Set - dann würde es nach Deiner Beschreibung funktionieren. Aber irgendwie einfach "nid suber"!
btw: Schriftdeutsch, bitte - es gibt diverse Leute, die kein Schweizerdeutsch verstehen und Berner die dieses Aargauer-Django Slang (oder was es sein soll) nicht verstehen WOLLEN.