Siemens Simatic series, Руководство по эксплуатации

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Commissioning the device
4.4 Notes on various device configurations
SIMATIC IPC547G
Operating Instructions, 04/2020, A5E49948632-AA
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4.4.4.2 RAID1 system
This is a RAID1 system configuration (data mirroring with two drives). This means that if
there is a defective hard disk or there are cable problems, the system can continue to
operate in one channel and achieve a high degree of availability.
Note
You will find information about the RAID controller in the "Drivers\RAID-AHCI\Intel" directory
on the "Documentation and Drivers" DVD that ships with the product.
Additional information on RAID1 systems can be found in the section "Manage onboard
RAID system (Page 107)".
4.4.4.3 RAID5 system
This is a RAID5 system configuration (striping with parity). This means that if there is a
defective hard disk or there are cable problems, the system can continue to operate in one
channel and achieve a high degree of availability.
Note
You will find information about the RAID controller in the "Drivers\RAID-AHCI\Intel" directory
on the "Documentation and Drivers" DVD that ships with the product.
Additional information on RAID5 systems can be found in the section "Manage onboard
RAID system (Page 107)".
4.4.4.4 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 status display by the SIMATIC IPC DiagBase Alarm
Manager.
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 drive with a new one 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 "Replacing a
defective hard disk drive in the RAID system (Page 94)".
● Information on integration of a replaced hot spare drive into the RAID system is available
in the section "Integrating a hot spare hard disk drive in the RAID system (Page 113)".