Contents 4
Opening the CLI in Command mode .................................................................................................. 52
CLI syntax ........................................................................................................................................ 52
Typical procedures ........................................................................................................................... 57
Using ACU scripting ................................................................................................................................... 73
Capturing a configuration ................................................................................................................. 73
Using an Input script ......................................................................................................................... 73
Creating an ACU script file ............................................................................................................... 74
Script file options ............................................................................................................................. 75
XML support .................................................................................................................................... 88
ACU scripting warning messages ...................................................................................................... 91
ACU scripting error messages ........................................................................................................... 91
HP Array Diagnostics and SmartSSD Wear Gauge Utility ................................................................ 96
About the utility .......................................................................................................................................... 96
Reported information .................................................................................................................................. 96
Installing the utility ...................................................................................................................................... 98
Setting up ADU Remote Service Mode .......................................................................................................... 99
Launching the utility in CLI mode .................................................................................................................. 99
Launching the utility in GUI mode ................................................................................................................. 99
Diagnostic report procedures ..................................................................................................................... 100
Viewing the diagnostic report .......................................................................................................... 100
Generating the diagnostic report ..................................................................................................... 102
Identifying and viewing diagnostic report files ................................................................................... 103
SmartSSD Wear Gauge report procedures ................................................................................................. 103
Viewing the SmartSSD Wear Gauge report ...................................................................................... 103
Generating the SmartSSD Wear Gauge report .................................................................................. 104
Identifying and viewing SmartSSD Wear Gauge report files ............................................................... 105
Drive arrays and fault-tolerance methods ..................................................................................... 106
Drive arrays ............................................................................................................................................. 106
Effects of a drive failure ............................................................................................................................ 108
Fault-tolerance methods ............................................................................................................................. 109
RAID 0—No fault tolerance ............................................................................................................. 109
RAID 1 and RAID 1+0 (RAID 10) ..................................................................................................... 110
RAID 1 (ADM) and RAID 10 (ADM) ................................................................................................. 111
RAID 5—distributed data guarding .................................................................................................. 113
RAID 6 (ADG)—Advanced Data Guarding ....................................................................................... 113
RAID 50 ........................................................................................................................................ 115
RAID 60 ........................................................................................................................................ 116
Comparing the hardware-based RAID methods ................................................................................. 116
Selecting a RAID method................................................................................................................. 117
Alternative fault-tolerance methods ................................................................................................... 117
Diagnosing array problems ........................................................................................................ 119
Diagnostic tools ....................................................................................................................................... 119
Troubleshooting resources ......................................................................................................................... 119
Acronyms and abbreviations ...................................................................................................... 121
Documentation feedback ........................................................................................................... 123
Index ....................................................................................................................................... 124