D-Link DNS-320L User Manual page 40

Section 3 - Installation
Step 29 - Under RAID Configuration, Select RAID
Type, choose RAID 0. Read the RAID 0 configuration
requirements.
Click Next to continue.
Step 30 - With RAID 0, the two drives are striped into
one Volume, making it appear that you have one drive.
Map Drive to Network indicates that the NAS has
separated the drive into 2 Volumes. To explain, if the
size of the two drives are different , the spare drive
space will be formatted as a JBOD volume. It is better
to have drives of the same sizes.
Click Next to continue.
DNS-320L 35
D-Link ShareCenter™ User Manual