NEC Express5800 manual 40

Advanced Configuration (Step 2 - Logical Drive Creation)

Alias	Alias (any value)
RAID level	Indicates the available RAID level depending on the number of
	physical drives selected in the previous screen.
	RAID0 for a single physical drive
	RAID0 or RAID1 for two physical drives
	RAID0 or RAID5 for three physical drives
	RAID0, RAID5 or RAID10 for four physical drives
Capacity	Specify the capacity of a logical drive to be created. The maximum
	permissible capacity is shown to the right of [Max:].
Strip Block Size	Indicates the block size of a logical drive. The default is 64KB.
Sector	Indicates the sector size. The default is 512 bytes.
Read Policy	Set read policy.
	Read Cache: Uses cache in reading.
	Read Ahead: Uses cache in reading and further provides previous
	reading. Previous reading before request can improve the system
	performance (default).
	No Cache: Does not use cache in reading.
Write Policy	Set write policy.
	Write Through: Does not use cache in writing.
	Write Back: Always uses cache in writing. It is expected that this
	setting can improve writing performance.
	However, in spite of the setting, the actual write cache state may
	change depending on the write cache setting of the controller
	(Adaptive Writeback Cache) and the battery state.
Initialization	Set whether logical drives are initialized just after they are created.
	None: Does not initialize logical drives (default).
	Quick: Initializes master boot sectors only.
	Full: Initializes all logical drives.
	In RAID0, only "None" or "Quick" is selectable.

4. After the selections, click [Update].

The logical drive is added and displayed graphically in Capacity Usage. If some capacity remains in [Max:] of the Capacity field, clicking the Update button allows another logical drive to be added. The above configuration can be unique to each logical drive.

5.After required logical drives are added completely, click [Next]. The summary appears.

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