Cisco UCS C220 M3 Configuration Manual page 21

Step 3: To create a RAID volume based on multiple drive groups (disk spanning) (RAID 00, 10, 50, or 60), select
the required physical drives and create the drive groups. Then click the Create Virtual Drive button.
Here are some examples:
● RAID 10 requires a minimum of two physical drives per drive group and a minimum of two drive groups. If
any of the minimum requirements are not met, a RAID 10 volume cannot be created.
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If you create only one drive group, you will not be allowed to create a RAID 10 volume.
When the minimum requirements are met (two drive groups with two physical drives), you can create a
RAID 10 volume.
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