Sony VGC-RA825GY - Manual (Page 87)

Reasons for using a RAID array system
When hard disk drives are grouped together in a RAID array, they are configured, formatted, and managed to perform in a
specific way. Your computer's data is spread across these drives in a manner that determines the level of RAID performance
and protection. The level of RAID protection and redundancy determines the capacity of the array, the security of your data,
and the quality of your computer's overall performance.
To aid your understanding of RAID terminology, see the RAID Glossary.
You may decide that a RAID array meets your needs when:
 Your computer's data needs increased fault tolerance to protect against interruptions or hardware failure.
 Your computer performs intensive work, such as video or graphics design, and require improved computing speed.
Page 87