5 Operation and management ............................................................. 31
Powering on disk enclosures ....................................................................................................... 31
Powering off disk enclosures ....................................................................................................... 32
Updating disk enclosure firmware ............................................................................................... 32
6 Troubleshooting ............................................................................... 33
When the enclosure does not start .............................................................................................. 33
Diagnostic steps ....................................................................................................................... 34
Are the power supply/fan module LEDs green? ...................................................................... 34
Is the system power LED green? ............................................................................................ 34
Recognizing disk drive failure ..................................................................................................... 34
Effects of a disk drive failure ................................................................................................ 35
Compromised fault tolerance ............................................................................................... 35
Recovering from compromised fault tolerance ......................................................................... 35
Factors to consider before replacing disk drives ............................................................................ 36
Automatic data recovery (rebuild) ............................................................................................... 36
Time required for a rebuild .................................................................................................. 37
Failure of another drive during rebuild .................................................................................. 37
Drive failure in a NetWare environment ....................................................................................... 37
Failed drives or interim recovery mode .................................................................................. 38
Handling disk drive failures ................................................................................................. 38
7 Support and other resources .............................................................. 41
Contacting HP .......................................................................................................................... 41
Before you contact HP ......................................................................................................... 41
HP contact information ........................................................................................................ 41
Subscription service ............................................................................................................ 41
Documentation feedback ..................................................................................................... 42
Related information ................................................................................................................... 42
Websites ........................................................................................................................... 42
Document conventions and symbols ............................................................................................. 42
Customer self repair .................................................................................................................. 43
Rack stability ............................................................................................................................ 43
A Regulatory compliance notices .......................................................... 45
Regulatory compliance identification numbers .............................................................................. 45
Federal Communications Commission notice ................................................................................ 45
FCC rating label ................................................................................................................ 45
Class A equipment ............................................................................................................. 45
Class B equipment .............................................................................................................. 45
Declaration of conformity for products marked with the FCC logo, United States only ......................... 46
Modifications ........................................................................................................................... 46
Cables .................................................................................................................................... 46
Canadian notice (Avis Canadien) ............................................................................................... 46
European Union regulatory notice ............................................................................................... 47
Disposal of waste equipment by users in private households in the European Union ........................... 48
Japanese notice ........................................................................................................................ 48
BSMI notice ............................................................................................................................. 48
Korean notice ........................................................................................................................... 49
Power cord statement for Japan .................................................................................................. 49
B Electrostatic discharge ...................................................................... 51
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