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11. Repeat step 6 and step 7. Then, turn on your computer.
Configuring RAID
This chapter provides information about how to configure Redundant Array of Independent Disks (RAID) for
your computer.
An Introduction to RAID
RAID is a technology that provides increased storage functions and reliability through redundancy.
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 drive groups configured according to certain RAID levels also 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.
Note: For RAID 0, the missing data resulting from a drive failure cannot be reconstructed.
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
To install an additional storage drive, refer to "Storage drive cage" on page 122.
Configuring the system BIOS to enable SATA RAID functionality
This section describes how to configure the system BIOS to enable SATA RAID functionality.
Note: Use the arrow keys on the keyboard to make selections.
To enable SATA RAID functionality, do the following:
1. Start the Setup Utility program. See "Starting the Setup Utility program" on page 61.
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 (depending on the keyboard) to save the new settings and exit the Setup Utility
program.
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P330 Hardware Maintenance Manual
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