Contents 4
Introduction to performance and tuning ...................................................................................................... 28
Disabling DVFS ....................................................................................................................................... 28
Limiting APCI C-states .............................................................................................................................. 28
Utilities ...................................................................................................................................... 29
Utilities reference ..................................................................................................................................... 29
fio-attach ...................................................................................................................................... 29
fio-beacon .................................................................................................................................... 30
fio-bugreport ................................................................................................................................. 30
fio-detach ..................................................................................................................................... 32
fio-format ...................................................................................................................................... 32
fio-pci-check .................................................................................................................................. 33
fio-status ....................................................................................................................................... 34
fio-update-iodrive ........................................................................................................................... 36
Monitoring IO Accelerator health ................................................................................................. 39
NAND flash and component failure ........................................................................................................... 39
Health metrics ......................................................................................................................................... 39
Health monitoring techniques .................................................................................................................... 39
Flashback substitution events ..................................................................................................................... 40
Module parameters ..................................................................................................................... 41
Using module parameters ......................................................................................................................... 41
VMDirectPathIO .......................................................................................................................... 42
Working with IO Accelerators and VMDirectPathIO ..................................................................................... 42
Using products with multiple devices .......................................................................................................... 42
Resources .................................................................................................................................. 43
Subscription service ................................................................................................................................. 43
For more information ............................................................................................................................... 43
Support and other resources ........................................................................................................ 44
Before you contact HP .............................................................................................................................. 44
HP contact information ............................................................................................................................. 44
Customer Self Repair ............................................................................................................................... 44
Regulatory information ................................................................................................................ 52
Safety and regulatory compliance ............................................................................................................. 52
Turkey RoHS material content declaration ................................................................................................... 52
Ukraine RoHS material content declaration ................................................................................................. 52
Warranty information .............................................................................................................................. 52
Acronyms and abbreviations ........................................................................................................ 53
Documentation feedback ............................................................................................................. 55
Index ......................................................................................................................................... 56
