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

Contents 4

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HP c-Class Vmware manual Module parameters