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Chapter 6. RAID
What is RAID
Redundant Array of Independent Disks (RAID) is a technology that provides increased storage functions and
reliability through redundancy. It also can improve data storage reliability and fault tolerance compared with
single-drive storage systems. Data loss resulting from a drive failure can be prevented by reconstructing
missing data from the remaining drives.
When a group of independent physical storage drives is set up to use RAID technology, they are in a RAID
array. This array distributes data across multiple storage drives, but the array appears to the host computer
as one single storage unit. Creating and using RAID arrays provides high performance, such as the expedited
I/O performance, because several drives can be accessed simultaneously.
RAID Level
Your computer must have the minimum number of SATA storage drives installed for the supported level of
RAID below:
RAID 0: striped disk array
Consists of at least two SATA storage drives
Supported strip size: 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or 128 KB
Better performance without fault tolerance
RAID 1: mirrored disk array
Consists of two SATA storage drives
Improved reading performance and 100% redundancy
Configure the system BIOS to enable SATA RAID functionality
To enable SATA RAID functionality:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Devices ATA Drive Setup and press Enter.
3. Select Configure SATA as and press Enter.
4. Select RAID and press Enter.
5. Press F10 or Fn+F10 to save the changes and exit.
Configure RAID in UEFI mode
This section provides instructions on how to configure RAID in UEFI mode.
Create RAID volumes in UEFI mode
Attention: All the existing data stored on the selected drives will be erased while the RAID volume is being
created.
To create RAID volumes:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Devices ATA Drive Setup and press Enter.
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