NEC Express5800/340Hb-R User's Guide download pdf (Page 91)

Windows Setup and Operation 3-15

Disk Operations Using the RDR (Rapid Disk Resync)

Function

RDR (Rapid Disk Resync)

Models supporting the RDR function secure reliability by making disks duplexed per disk using the

ft control software’s RDR function. Duplexing disks by the RDR function enables the disks to be

resynchronized in a short period of time when their mirror has been broken due to causes such as

PCI module replacement

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 a paired disk as a single virtual disk.

Slot1

Slot2

Slot3

Group1

Group2

Corresponding slots for mirroring process

[Paired slots]

Corresponding slots Virtual disk name given by the RDR

Utility

PCI module#1 Slot 1 Ù PCI module#2 Slot 1

PCI module#1 Slot 2 Ù PCI module#2 Slot 2

PCI module#1 Slot 3 Ù PCI module#2 Slot 3

RDR Virtual Disk 1

RDR Virtual Disk 2

RDR Virtual Disk 3

Note: In the above table, the PCI module names correspond to the following modules:

PCI module (for Group1): PCI module#1

PCI module (for Group2): PCI module#2

[Cautions for using the RDR function]

1. RDR can be set only to the disks inserted into the built-in slots of NEC Express5800/ft series.

2. Be sure to specify RDR to all disks inserted to the built-in slots and make duplex settings.

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NEC Express5800/340Hb-R User's Guide Page 91