B&R MAPPC700A-ENG, Руководство пользователя

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Technical data • Individual components
Chap
ter 2
Te
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ica
l da
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189 Panel PC 700 with 945GME N270 CPU board User's Manual V 1.16
3.6 RAID system
Sometimes it is simply not possible to avoid using hard disks due to the amount of data that
needs to be saved. In this case, a RAID provides high system availability. All data is
simultaneously and automatically stored on two hard drives. This double data storage means
that when one hard disk fails, the system will continue to run on the second hard disk.
Advantages for the user:
• No data loss when hard drive fails.
• The system continues to run with a hard disk.
• Data redundancy is automatically restored by the system when the faulty hard disk has
been replaced.
Depending on the type, the RAID 1 system is designed in the form of 1 or 2 PCI cards.
1 PCI slot : PCI SATA RAID controller - 5ACPCI.RAIC-03 (2x160GB)
2 PCI slot: PCI RAID controller (5ACPCI.RAIC-00) and PCI card with two hard disks
(5ACPCI.RAIS-00 or 5ACPCI.RAIS-01)
The system can be flexibly implemented in all APC620 und PPC700s with 1 free PCI slot
(depending on the RAID system design). The system also supports RAID 0 applications. As a
result, parallel access to two hard drives with a relatively high data throughput is the main focus,
in addition to the high availability.
Figure 103: RAID 1 system schematic
File A
File B
File C
File D
File A
File B
File C
File D