Commissioning the device
4.4 Notes on various device configurations
SIMATIC IPC547G
60 Operating Instructions, 04/2020, A5E49948632-AA
4.4.4 RAID systems
4.4.4.1 Manage RAID system
RAID system management functions
The RAID system is fully set up ex works. The installed SIMATIC diagnostic software is used
to display the status of the RAID system. Additional software is not required. Detailed
information on drive replacement is available in section "Expansion and parameter
assignment of device", "Replace defective hard disk in RAID system".
Note
A hard disk can be synchronized at operating system level if a fault is detected. It may take a
very long time to synchronize a new hard disk in the background, depending on the size of
the hard disk and on the system load. It may take several hours or even days in the case of
extremely hig
h hard disk load. Guide value for duration < 3 h with 90% HDD system load
TB.
The safe system states RAID Level, for example, 1 are only reached once synchronization
has been successfully completed. In addition, system performance may
be limited in the
case of a manually started maintenance operation until completion of the maintenance
phase.
Replacing a faulty drive in the RAID system
Replace the faulty drive with a new drive of the same type and capacity to return to the safe
RAID1 or RAID5 state after a fault. The defective drive is displayed at the HDD alarm LED at
the front of the device.
The diagnostic software indicates the following:
● A defective drive
● Details of the functioning hard disk
The defective hard disk is displayed with port number. You can find detailed information on
drive replacement in the following sections:
● "Hard disks in removable tray (Page 58)"
● "Replacing a defective hard disk drive in the RAID system (Page 94)"
Integrating a new hard disk
A hard disk is integrated automatically into the RAID if it fulfills one of the following
requirements:
● The hard disk is brand new.
● The hard disk is set up as a global spare drive.
● The hard disk is set up as a specific (dedicated spare) drive.
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