Operating instructions

Commissioning
8.4 Additional applications
SIMATIC Panel PC 677B
Operating Instructions, 05/2007, A5E01035609-01
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Comments about faults
Notice
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.
Replacing a faulty RAID system drive
Replace faulty RAID drives with a new drive in order to recover secure RAID1 state. The
RAID software reports the faulty drive and returns details of the operable hard drive.
The functioning hard drive is indicated in BIOS by its port number, or by the RAID software
by its device port number.
Figure 8-11 Example
Always replace the faulty drive with a new one of the same type and capacity.