Compex Systems Advanced SerialRAID Adapters SA33-3285-02 - Manual (Page 51)

RAID-0 Array States
A RAID-0 array can be in either of two states. A knowledge of those states is useful
when you are configuring your arrays. The states are described here.
Good State
A RAID-0 array is in the Good state when all the member disk drives of that array are
present.
Offline State
A RAID-0 array enters Offline state when one or more member disk drives become
missing. Read and write operations are not allowed.
Chapter 3. RAID Functions and Array States 31