Sony VGX-XL2 - Manual (Page 145)

142 VGX-XL2A Digital Living System
RAID 0 - Striping
A performance-oriented data mapping technique. Data are divided into strips
and written across all the disks of the array. This level allows for high read/
write performance for a relatively low cost.
RAID 0 is not fault-tolerant. Redundant information is not stored. Failure of
any disk in the array results in the loss of all data.
RAID 1 - Mirroring
This level operates with two disks that use parallel access for high data-
transfer rates. Level 1 provides excellent data reliability and improves
performance for read-intensive applications, but at a relatively high cost.
RAID 1 provides redundancy by writing identical data to all disks in the array.
If either disk fails, the controller uses the data drive or the mirror drive for data
recovery and continues to operate. Data can then be copied to the
replacement disk.
App E RAID.fm Page 142 Thursday, December 22, 2005 1:15 PM