Reconstruction - NEC Express5800 120Rj-2 User Manual

User Guide

Reconstruction

The reconstruction feature is used to change the configuration and/or RAID level of the
existing virtual disk. The Reconstruction includes three features, however, the Internal
RAID Controller supports only the "Migration with addition".
You can use WebBIOS for the Reconstruction whereas the Uni-
versal RAID Utility does not support the Reconstruction feature.
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 as
shown below ( α : Number of HDDs to be added).
Before execution
RAID level Number
of 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
Caution
Table 23: Migration with addition
After execution
RAID level Number of
HDDs
RAID0
x+α
RAID1
2
RAID5
x+α
RAID6
x+α
(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
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