HP Integrity rx4640 Server - Manual (Page 6)

Contents
Appendix B
Electrostatic Discharge
Appendix C
Controller Specifications
Appendix D
Drive Arrays and Fault Tolerance
What Is a Drive Array? ................................................................................................... D-1
Fault-Tolerance Methods ................................................................................................ D-5
RAID 0—No Fault Tolerance .................................................................................. D-5
RAID 1+0—Drive Mirroring ................................................................................... D-6
RAID 5—Distributed Data Guarding....................................................................... D-7
RAID ADG—Advanced Data Guarding.................................................................. D-9
Comparing Hardware-Based RAID Methods ........................................................ D-10
Other Fault-Tolerance Options............................................................................... D-11
Appendix E
Hard Drive Installation and Replacement
General Information About Hard Drive Failure ............................................................. E-1
Recognizing Drive Failure ....................................................................................... E-2
Compromised Fault Tolerance ................................................................................. E-4
Automatic Data Recovery ........................................................................................ E-5
General Aspects of Drive Replacement .......................................................................... E-6
Drive Failure During Rebuild................................................................................... E-8
Moving Drives and Arrays.............................................................................................. E-9
Upgrading Hard Drive Capacity............................................................................. E-10
Expanding and Extending Capacity ....................................................................... E-11
Appendix F
Probability of Logical Drive Failure
Appendix G
Diagnosing Array Problems
Index
vi HP Smart Array 5300 Controller User Guide
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