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Creating Logical Drives 5-11
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
5.3.2 Assigning RAID Levels
Only one RAID level can be assigned to each logical drive. Ta bl e 5 .7
shows the drives required per RAID level.
Note:
The MegaRAID SCSI 320-0 controller supports one or two SCSI
channels, with up to 15 SCSI devices on each channel.
Table 5.6 Performance Characteristics for RAID Levels
RAID Level Performance Characteristics
0 Excellent for all types of I/O activity, but provides no data
security.
1 Provides data redundancy and good performance.
5 Provides data redundancy and good performance in most
environments.
10 Provides data redundancy and excellent performance.
50 Provides data redundancy and very good performance.
Table 5.7 Number of Physical Drives for RAID Levels
RAID
Level Minimum # of Physical Drives Maximum # of Physical Drives
01 30
12 2
53 30
10 4 18
50 6 30