NEC Express 5800 User Manual page 354

Hardware
Select a DG to define VD from "Array With Free Space" frame, select [Add to SPAN], then press
Enter. The DG is defined in the "Span" field to the right.
After the Span has been defined, select [Next] at the lower right of the screen, and press Enter.
Define the virtual disk (VD) in DG that has been created in previous step. When DG was defined,
[VD Definition] screen is displayed.
In the "Next LD, Possible RAID Levels" field, available RAID levels and maximum size for VD are
displayed.
IMPORTANT:
●To configure RAID0, 1, or 5, perform Span Definition to a single DG
only. If you need to perform Span Definition to several DGs, define
VD for the first DG, then select the next DG to define VD.
●To configure RAID10 or 50, select several DGs containing the same
number of HDDs for Span Definition.
●Span Definition cannot be performed to DGs containing the
different number of HDDs.
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