Commissioning
7.9 Notes on operation
SIMATIC HMI IPC677C
72 Operating Instructions, 04/2013, A5E02722710-04
Comments about faults
Note
Input delay
System load may briefly increase due to synchronization when a hard disk has failed,
depending on processor load and current hard disk activity.
In extreme cases, input from the keyboard and touch screen may be delayed for a brief
period.
Before you replace the defective hard disk, create a backup copy of the system.
7.9.4 Replacing a defective drive in the RAID system
A missing drive is reported via the RAID software.
Figure 7-3 Degraded message of RAID software
Replace defective RAID drives with a new drive in order to recover secure RAID1 state. The
RAID software reports the defective drive and returns details of the operable hard drive.
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