This section explains how to handle errors that may occur when you use Hitachi's disk array subsystem. The following table shows error-handling methods and the figure that that follows shows an error analysis flow chart.

Table 6-4 Error-handling methods

Error type	Error message	Error-handling method
Failure to link to RAID Manager	Reason code ERRORRETURN[EX_ATTHOR] of the KFPS04680-E message is displayed.	For details about how to handle this error, see 6.4 Handling of failure to link to RAID Manager.
Missing specification of paired logical volume group name from the RAID Manager configuration definition	Reason code ERRORRETURN[EX_ENOGRP] of the KFPS04680-E message is displayed.	For details about how to handle this error, see 6.5 Handling when paired logical volume group names are missing from the RAID Manager configuration definition.
Communication error between MCU and RCU	Reason code ERRORRETURN[EX_INVVOL] of the KFPS04680-E message is displayed.	For details about how to handle this error, see 6.6 Handling of route errors.
Primary volume error	Reason code ERRORRETURN[EX_INVVOL] of the KFPS04680-E message is displayed.	For details about how to handle this error, see 6.7 Handling of errors on the primary volume.
Secondary volume error	Reason code ERRORRETURN[EX_INVVOL] of the KFPS04680-E message is displayed.	For details about how to handle this error, see 6.8 Handling of errors on the secondary volume.

Figure 6-1 Error analysis flow chart