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Dual disk configuration overview

The FT server secures data by setting the dual disk configuration using the RDR (Rapid Disk Resync) function in the control software. Dual disk configuration procedures differ depending on whether you are configuring the system disk (slot 0) or the data disk (slot 1 to slot 7).

There are two different procedures:

  • To configure the dual disk of the system disk, refer to the System Disk Dual Configuration Procedure.
  • To configure the dual disk of the data disk, refer to the Data Disk Dual Configuration Procedure.

IMPORTANT: Refer to the following notes:

  • The CPU/IO module has a processor function part and an IO function part and monitors and manages each part. The IO function part is referred to as PCI module in this section.
  • Hard disk drives mounted in built-in slots need to be duplexed.

By setting RDR, as the following figure and table show, dual configuration is set between the disks of the corresponding slots and then these disks are recognized as one virtual disk by Windows (such as Disk Management and Device Manager).

CAUTIONS: Read the following cautions before using the RDR Utility:

  • RDR can only be used on the disks inserted into the built-in slots of the FT server. It cannot be used on the dynamic disk.
  • Be sure to use a basic disk as the system disk. Only a data disk can be used for a dynamic disk.
  • Be sure to specify RDR to all disks inserted in the built-in slots and make duplex settings.
  • Be sure to configure the RDR settings in the same way not only when the OS is installed but also when the disk is added to the PCI module.
  • RDR can only be used on basic disks. If a span volume or stripe volume is needed, configure RDR to a basic disk and then change the disk to a dynamic disk using Disk Management.
  • Before performing physical formatting, change OS Boot Monitoring to Disabled on Server Monitoring Configuration in the BIOS setup utility.
  • If the system is shut down (or restarted) while the mirror is broken, or a long time (30 minutes or longer) has passed after the mirror is broken, the mirror resynchronization target will be the entire area of the partition existing on the disk. For example, if the mirroring has been broken due to a PCI module failure, when you shut down the system and replace the PCI module in such a state, the entire area of the partition existing on the disk needs to be resynchronized.
  • Create a data disk partition after configuring the RDR. If you create a data disk partition before configuring the RDR, the partition's drive letters may be deleted when the RDR is configured.

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