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3.3
RAID 1
Figure 3.1
RAID 0 Array
Segment 1
Segment 5
Segment 9
In RAID 1, the MegaRAID SCSI 320-2 duplicates all data from one drive
to a second drive. RAID 1 provides complete data redundancy, but at the
cost of doubling the required data storage capacity.
Uses
Use RAID 1 for small databases or any other environment
that requires fault tolerance but small capacity.
Strong Points
Provides complete data redundancy. RAID 1 is ideal for any
application that requires fault tolerance and minimal capacity.
Weak Points
Requires twice as many disk drives. Performance is impaired
during drive rebuilds.
Drives
2
Figure 3.2
shows a RAID 1 array.
RAID 1
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
MegaRAID Controller
Segment 2
Segment 3
Segment 6
Segment 7
Segment 10
Segment 11
Segment 4
Segment 8
Segment 12
3-3
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Table of Contents
Troubleshooting
