HP 6-Port SATA RAID 20

RAID 50

This dual-level RAID type is created by using two or more equal-sized RAID 5 arrays to create a RAID 0 array. The top level RAID 0 array shares the load among the second-level RAID 5 arrays, improving both read and write performance. Parity (Pan or Pbn), used in the second level RAID 5 arrays, provides efficient redundancy.

Figure 7 A RAID 50 array

Appendix D: About RAID 20

Contents

User Guide Page Contents 1 Board components and features Controller specifications and attributes 2 Installation and configuration procedures Overview of the installation process Installing the controller and drives Page Assigning the boot controller Creating a bootable array Page Appendix A: Electrostatic discharge Preventing electrostatic discharge Grounding methods to prevent electrostatic discharge Appendix B: Regulatory compliance notices Federal Communications Commission notice Canadian notice (Avis Canadien) European Union regulatory notice BSMI notice Japanese notice Korean notices Appendix C: Using the RAID Configuration Utility Creating arrays Managing arrays Initializing drives Rescanning drives Appendix D: About RAID Types of volumes and arrays Page Page Page Glossary Page Page Page Index