Raid Configuration Precautions - ASROCK Fatal1ty Z77 Professional Installation And Configuration Manual

2.2 RAID Configurations Precautions
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Please use two new drives if you are creating a RAID
0 (striping) array for performance. It is recommended
to use two SATA drives of the same size. If you use
two drives of different sizes, the smaller capacity hard
disk will be the base storage size for each drive. For
example, if one hard disk has an 80GB storage capa-
city and the other hard disk has 60GB, the maximum
storage capacity for the 80GB-drive becomes 60GB,
and the total storage capacity for this RAID 0 set is
120GB.
You may use two new drives, or use an existing drive
and a new drive to create a RAID 1 (mirroring) array
for data protection (the new drive must be of the
same size or larger than the existing drive). If you
use two drives of different sizes, the smaller capacity
hard disk will be the base storage size. For example,
if one hard disk has an 80GB storage capacity and
the other hard disk has 60GB, the maximum storage
capacity for the RAID 1 set is 60GB.
Please verify the status of your hard disks before you
set up your new RAID array.
WARNING!!
Please backup your data first before you create RAID functions.
In the process you create RAID, the system will ask if you want
to "Clear Disk Data" or not. It is recommended to select "Yes",
and then your future data building will operate under a clean
environment.
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