Configuring Arrays on HP Smart Array Controllers Reference Guide
Contents 4
Setting up ADU Remote Service Mode .......................................................................................................... 95
Launching the utility in CLI mode .................................................................................................................. 95
Launching the utility in GUI mode ................................................................................................................. 95
Diagnostic report procedures ....................................................................................................................... 96
Viewing the diagnostic report ............................................................................................................ 96
Generating the diagnostic report ....................................................................................................... 98
Identifying and viewing diagnostic report files ..................................................................................... 99
SmartSSD Wear Gauge report procedures ................................................................................................... 99
Viewing the SmartSSD Wear Gauge report ........................................................................................ 99
Generating the SmartSSD Wear Gauge report .................................................................................. 100
Identifying and viewing SmartSSD Wear Gauge report files ............................................................... 101
Drive arrays and fault-tolerance methods ..................................................................................... 102
Drive arrays ............................................................................................................................................. 102
Effects of a hard drive failure on logical drives ............................................................................................ 104
Fault-tolerance methods ............................................................................................................................. 105
RAID 0—No fault tolerance ............................................................................................................. 105
RAID 1 and RAID 1+0 (RAID 10) ..................................................................................................... 106
RAID 1 (ADM) and RAID 10 (ADM) ................................................................................................. 107
RAID 5—distributed data guarding .................................................................................................. 109
RAID 6 (ADG)—Advanced Data Guarding ....................................................................................... 109
RAID 50 ........................................................................................................................................ 111
RAID 60 ........................................................................................................................................ 112
Comparing the hardware-based RAID methods ................................................................................. 112
Selecting a RAID method................................................................................................................. 113
Alternative fault-tolerance methods ................................................................................................... 113
Diagnosing array problems ........................................................................................................ 115
Diagnostic tools ....................................................................................................................................... 115
Troubleshooting resources ......................................................................................................................... 115
Acronyms and abbreviations ...................................................................................................... 117
Documentation feedback ........................................................................................................... 119
Index ....................................................................................................................................... 120