Fujitsu Eternus DX80 S2 User Manual page 92

Chapter 7 Troubleshooting
7.1 Check List
• Check the cache parameter settings of the volumes.
If the Force Prefetch mode of the volumes that are used for image distribution is disabled,
performance may be reduced. Enable the Force Prefetch mode and specify the appropriate
value for the Prefetch Limit.
Note that the Force Prefetch mode for volumes that are not used for image distribution must
be disabled.
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When the server does not recognize the volumes
Check the following points. If none of these resolve the problem, leave the ETERNUS DX Disk
storage system alone and contact your maintenance engineer.
• Check the status of the ETERNUS DX Disk storage system and other devices such as
network devices connecting the server and the ETERNUS DX Disk storage system, and
ensure that there are no problems with the power supply.
• Check if an error occurs in a path by using a path management tool such as ETERNUS
Multipath Manager. Refer to the relevant manuals and take the required actions.
ETERNUS DX80 S2/DX90 S2 Disk storage system User's Guide -Operation-
92
Copyright 2012 FUJITSU LIMITED P3AM-4842-03ENZ0