HP Storage C- Accelerators Linux manual 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

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