Table of Contents
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Opening the CLI in Console mode ................................................................................................... 54
Opening the CLI in Command mode ................................................................................................ 54
CLI syntax ..................................................................................................................................... 54
Typical procedures ........................................................................................................................ 59
Using ACU scripting ................................................................................................................................ 75
Capturing a configuration ............................................................................................................... 75
Using an Input script ...................................................................................................................... 76
Creating an ACU script file ............................................................................................................. 76
Script file options ........................................................................................................................... 78
XML support .................................................................................................................................. 90
ACU scripting warning messages .................................................................................................... 93
ACU scripting error messages ......................................................................................................... 94
HP Array Diagnostics and SmartSSD Wear Gauge Utility ................................................................ 99
About the utility ....................................................................................................................................... 99
Reported information ............................................................................................................................... 99
Installing the utility ................................................................................................................................. 101
Setting up ADU Remote Service Mode ..................................................................................................... 102
Launching the utility in CLI mode ............................................................................................................. 102
Launching the utility in GUI mode ............................................................................................................ 102
Diagnostic report procedures .................................................................................................................. 103
Viewing the diagnostic report........................................................................................................ 103
Generating the diagnostic report ................................................................................................... 105
Identifying and viewing diagnostic report files ................................................................................. 106
SmartSSD Wear Gauge report procedures ............................................................................................... 106
Viewing the SmartSSD Wear Gauge report .................................................................................... 106
Generating the SmartSSD Wear Gauge report ................................................................................ 107
Identifying and viewing SmartSSD Wear Gauge report files .............................................................. 108
Drive arrays and fault-tolerance methods ..................................................................................... 109
Drive arrays.......................................................................................................................................... 109
Effects of a drive failure .......................................................................................................................... 111
Fault-tolerance methods .......................................................................................................................... 112
RAID 0-No fault tolerance .......................................................................................................... 112
RAID 1 and RAID 1+0 (RAID 10) ................................................................................................... 113
RAID 1 (ADM) and RAID 10 (ADM) ............................................................................................... 114
RAID 5-distributed data guarding ................................................................................................ 116
RAID 6 (ADG)-Advanced Data Guarding ..................................................................................... 116
RAID 50 ..................................................................................................................................... 118
RAID 60 ..................................................................................................................................... 119
Comparing the hardware-based RAID methods ............................................................................... 119
Selecting a RAID method .............................................................................................................. 120
Alternative fault-tolerance methods ................................................................................................. 120
Diagnosing array problems ........................................................................................................ 122
Diagnostic tools .................................................................................................................................... 122
Troubleshooting resources ...................................................................................................................... 122
Acronyms and abbreviations ...................................................................................................... 124
Documentation feedback ........................................................................................................... 126
Index ....................................................................................................................................... 127
Contents 4
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