NEC Express5800/140Rf-4 User Manual page 144

4-46 Configuring Your Server
Reconstruction
The reconstruction feature is used to change configuration and/or RAID level of existing virtual
disk. The Reconstruction contains the following three features, however, the Onboard RAID
Controller (MegaRAID ROMB) supports "Migration with addition" only.
IMPORTANT:
RAID Utility does not support Reconstruction.
Removed physical drive
Unsupported.
Migration only
Unsupported.
Migration with addition
Use this feature to add HDDs to existing virtual disk. The execution patterns are as shown below (α:
Number of HDDs to be added).
Before execution
RAID Number of
level HDDs
RAID0 x
RAID0 1
RAID0 x
RAID0 x
RAID1 2
RAID1 2
RAID1 2
RAID5 x
RAID5 x
RAID5 x
RAID6 x
RAID6 x
RAID6 x
You can use WebBIOS for Reconstruction. Universal
After execution
RAID Number of
level HDDs
RAID0
x+α
RAID1 2
RAID5 x+α
x+α
RAID6
(α=2 or more)
RAID0
2+α
RAID5
2+α
RAID6
2+α
RAID0 x+α
RAID5 x+α
RAID6 x+α
RAID0
x+α
RAID5
x+α
RAID6
x+α
Description
Capacity increased: equivalent to α HDDs
Capacity remains unchanged.
Capacity increased: equivalent to α-1 HDDs
Capacity increased: equivalent to α-2 HDDs
Capacity increased: equivalent to α+1 HDDs
Capacity increased: equivalent to α HDDs
Capacity increased: equivalent to α-1 HDDs
Capacity increased: equivalent to α+1 HDDs
Capacity increased: equivalent to α HDDs
Capacity increased: equivalent to α-1 HDDs
Capacity increased: equivalent to α+2 HDDs
Capacity increased: equivalent to α+1 HDDs
Capacity increased: equivalent to α HDDs