NEC Express5800/A1080a, User Manual, Page: 366 / 696

Hardware
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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.