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. |
|
|
5.3.2Assigning RAID Levels
Only one RAID level can be assigned to each logical drive. Table 5.7 shows the drives required per RAID level.
Table 5.7 | Number of Physical Drives for RAID Levels | |
|
|
|
RAID |
|
|
Level | Minimum # of Physical Drives | Maximum # of Physical Drives |
|
|
|
0 | 1 | 30 |
|
|
|
1 | 2 | 2 |
|
|
|
5 | 3 | 30 |
|
|
|
10 | 4 | 18 |
|
|
|
50 | 6 | 30 |
|
|
|
Note: The MegaRAID SCSI
Creating Logical Drives |
Copyright © 2002 by LSI Logic Corporation. All rights reserved.