Acer Veriton M6618G Service Manual page 126

Step 7:Select "RAID0(Stripe)" at "RAID Level".
Step 8:Select two HDDs in "Disk" by space key.
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Step 9:Press "Enter" to finish HDD selection and it will back to RAID creation interface.
Step 10:Repeat RAID1 creation step and exit,then install OS.
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