You can’t create a RAID set on your startup disk you must first start up your computer from another disk.Ĭoncatenated (JBOD) set: Increase storage space with a concatenated disk set. When you create a mirrored RAID set, your data is written to multiple disks so the information is stored redundantly.
Mirrored (RAID 1) set: Protect your data against hardware failure with a mirrored RAID set. You can’t create a RAID set on your startup disk you must first start up your computer from another disk. Striped (RAID 0) set: A striped RAID set can speed up access to your data.
In the Disk Utility app on your Mac, choose File > RAID Assistant.