Disk Operations - NEC Express5800 Series User Manual

3-2 Windows Setup and Operation

DISK OPERATIONS

This section explains the disk operation of the Rapid Disk Resync (RDR) utility.
NEC Express5800/320Fc series mirrors the disks using "Rapid Disk Resync" (RDR) utility. This
section describes operations and configuration required to synchronize disks (duplex) and
replacement of faulty drives.
IMPORTANT:
It is, not recommended to create non-system partition on the drive containing the operating
system (OS). If you reinstall the OS, the entire disk surface is rewritten and if there's a data
partition, the data must be backed up before reinstalling the OS.
Disk Operations Using the RDR (Rapid Disk Resync)
Function
RDR (Rapid Disk Resync)
RDR is part of the ft control software and enhances reliability by duplexing the drives in the PCI
modules. Duplexing disks by the RDR utility enables the disks to be resynchronized in a short
period of time when their mirror has been broken.
Setting RDR to disks duplicates the disks of paired slots as shown in the figure below and Windows
(ex. Disk Management and Device Manager) recognizes paired disks as a single virtual disk.
[Corresponding slots]
Note: In the above table, the PCI module names correspond to the following modules:
PCI module (for CPU/IO module 0): PCI module 0
PCI module (for CPU/IO module 1): PCI module 1
[Cautions for using the RDR function]
1.
RDR can only mirror is only support on internal disk drives.
Slots corresponding the mirroring process
Corresponding slots
PCI module 0 Slot 1
PCI module 0 Slot 2
PCI module 0 Slot 3
PCI module 1 Slot 1
PCI module 1 Slot 2
PCI module 1 Slot 3
Slot 3
Slot 2
Slot 1
Slot 3
Slot 2
Slot 1