Raid5 System; Raid System With Hot Spare Drive - Siemens SIMATIC IPC547E Operating Instructions Manual

4.4.3.2

RAID5 system

This is a RAID5 system configuration (striping with parity). This means that if there is a
defective hard disk drive or there are cable problems, the system can continue to operate in
one channel and achieve a high degree of availability.
Note
You can find information about the Intel® RAID controller in the RAID documentation in the
"Drivers\RAID\Intel" directory on the supplied "Documentation and Drivers" DVD.
For information on the mounting positions, refer to section
"Replacing a defective hard disk drive in the RAID system (Page 70)".
Additional information on RAID5 systems can be found in the section
"Managing RAID systems (Page 57)."
4.4.3.3

RAID system with hot spare drive

In the factory state, the device is configured as a RAID1 or RAID5 system with a hot spare
drive. A hot spare drive is a drive included in the device as spare.
If a defective drive is detected in the RAID1 or RAID5 system, the hot spare drive is
automatically integrated during ongoing operation instead of the defective drive and takes
over its function. The rebuild process to the hot spare drive starts automatically.
The defective drive is signaled as such by the SIMATIC IPC DiagBase Alarm Manager. The
associated status display is described in the section "Status displays (Page 19)".
A data-secure system is restored once synchronization is complete.
To restore full functionality of the RAID system with hot spare drive, you must replace the
defective hot spare drive with a new hot spare drive and integrate it once again as hot spare
drive in the RAID system in the RAID software.
● Information on replacing the hot spare drive is available in the section
● Information on integration of a replaced hot spare drive into the RAID system is available
SIMATIC IPC547E
Operating Instructions, 09/2013, A5E32317120-AA
"Replacing a defective hard disk drive in the RAID system (Page 70)".
in the section "Integrating a hot spare hard disk drive in the RAID system (Page 62)".
Commissioning the device
4.4 Information on optional features
47