DELL 530b Manuale Utente

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Setting Up and Using Your Computer
47
About RAID Configurations
 
NOTE: 
RAID is not supported on Inspiron 530b/530d.
This section provides an overview of the redundant array of independent disks 
(RAID) configuration you may have selected when you purchased your 
computer. Your computer supports RAID level 1. A RAID level 1 configuration 
is recommended for the data integrity requirements of digital photography 
and audio.
The Intel RAID controller on your computer can only create a RAID volume 
using two physical drives. If a third drive is present, then that drive cannot be 
made part of a RAID volume using the Intel RAID configuration program, 
although it can be used as a spare drive in a RAID 1 configuration. However, if four 
drives are present in your computer, then each pair of drives can be made into 
a RAID level 1 volume. The drives should be the same size in order to ensure 
that the larger drive does not contain unallocated (and therefore unusable) space.
RAID Level 1 Configuration
RAID level 1 uses a data-redundancy storage technique known as "mirroring." 
When data is written to the primary drive, it is then duplicated, or mirrored, 
on the other drive. A RAID level 1 configuration sacrifices high data access 
rates for its data redundancy advantages.
book.book  Page 47  Monday, October 6, 2008  11:28 AM