HP MSR Encryption Accelerators - Manual (Page 4)

Contents 4
Manually running the SNMP subagent ............................................................................................. 29
Subagent log file ........................................................................................................................... 29
Using the SNMP sample config files........................................................................................................... 30
Enabling SNMP test mode ........................................................................................................................ 30
Troubleshooting SNMP ............................................................................................................................ 33
Supported SNMP MIB fields ..................................................................................................................... 33
Maintenance .............................................................................................................................. 35
Maintenance tools ................................................................................................................................... 35
Device LED indicators .............................................................................................................................. 35
HP IO Accelerator Management Tool ......................................................................................................... 35
Command-line utilities .............................................................................................................................. 35
Enabling PCIe power override .................................................................................................................. 36
Enabling the override parameter ..................................................................................................... 37
Common maintenance tasks ..................................................................................................................... 37
Unloading the IO Accelerator driver ................................................................................................ 38
Uninstalling the IO Accelerator driver RPM package .......................................................................... 38
Uninstalling the IO Accelerator Utilities, IO Accelerator Management Tool 2.x, and other support packages
................................................................................................................................................... 38
Disabling auto attach ..................................................................................................................... 38
Unmanaged shutdown issues .......................................................................................................... 39
Disabling the driver ....................................................................................................................... 39
Utilities ...................................................................................................................................... 40
Utilities reference ..................................................................................................................................... 40
fio-attach ................................................................................................................................................ 40
fio-beacon .............................................................................................................................................. 41
fio-bugreport ........................................................................................................................................... 41
fio-detach ............................................................................................................................................... 42
fio-format ............................................................................................................................................... 43
fio-pci-check ........................................................................................................................................... 44
fio-snmp-agentx ....................................................................................................................................... 45
fio-status ................................................................................................................................................. 45
fio-sure-erase .......................................................................................................................................... 47
fio-update-iodrive .................................................................................................................................... 49
Monitoring IO Accelerator health ................................................................................................. 52
NAND flash and component failure ........................................................................................................... 52
Health metrics ......................................................................................................................................... 52
Health monitoring techniques .................................................................................................................... 53
About flashback protection technology ....................................................................................................... 54
Software RAID and health monitoring ........................................................................................................ 54
Performance and tuning ............................................................................................................... 55
Introduction to performance and tuning ...................................................................................................... 55
Disabling DVFS ....................................................................................................................................... 55
Limiting APCI C-states .............................................................................................................................. 55
Setting NUMA affinity .............................................................................................................................. 56
Setting the interrupt handler affinity ........................................................................................................... 56
NUMA configuration ................................................................................................................... 57
Introduction to NUMA architecture ............................................................................................................ 57
NUMA node override parameter ............................................................................................................... 57
Advanced configuration example .............................................................................................................. 57