NEC NovaScale R480 E1 User Manual page 124

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