HP A7143A RAID160 SA Controller Support Guide

RAID Technology Overview

HP RAID160 SA Controller Supported RAID Configurations

Chapter 1 19

HP RAID160 SA Controller Supported RAID

Configurations

RAID 0—No Fault Tolerance

The RAID 0 configuration enhances performance with data striping, but

there is no data redundancy to protect against data loss when a physical

disk fails. RAID 0 is useful for rapid storage of large amounts of

non-critical data (for printing or image editing, for example), or when

cost is the most important consideration (see Figure 1-4 on page 19).

Figure 1-4 Data Striping (S1-S4) of Data Blocks B1-B12

Advantages

• Highest performance configuration for writes

• Lowest cost per unit of data stored

• All disk capacity is used to store data (none needed for fault

tolerance)

Disadvantages

• All data on the logical drive is lost if a physical disk fails

B11B10 B12