Logic MegaRAID SCSI 320-1 RAID Controller User's Guide

Creating Logical Drives 5-11
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
characteristics for RAID drive arrays at each RAID level is shown in
Table 5.6 .
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 320-1 controller supports a maximum
of 15 physical drives.
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 15
12 2
53 15
10 4 14
50 6 15