RAID 1 In RAID 1, the Nytro controller card duplicates all data from one drive to a second drive in the drive group. RAID 1 supports an even number of drives from 2 through 8 in a single span. RAID 1 provides complete data redundancy, but at the cost of doubling the required data storage capacity. The following table provides an overview of RAID 1. The following figure provides a graphic example of a RAID 1 drive group. Table 2. RAID 1 Overview 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 drives. Performance is impaired during drive rebuilds. Drives 2 through 8 (must be an even number of drives) Figure 3. RAID 1 Drive Group
RAID 1
In RAID 1, the Nytro controller card duplicates all data from one drive to a second drive in the drive group. RAID 1 supports an even number of drives from 2 through 8 in a single span. RAID 1 provides complete data redundancy, but at the cost of doubling the required data storage capacity. The following table provides an overview of RAID 1. The following figure provides a graphic example of a RAID 1 drive group.
Table 2. RAID 1 Overview
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 drives. Performance is impaired during drive rebuilds.
Drives
2 through 8 (must be an even number of drives)
Figure 3. RAID 1 Drive Group