Acer SmartRAID V Bedienungsanleitung PDF herunterladen (Seite 137)

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Storage Manager

NOTE There is a significant impact on system performance during

array expansion. The relative priorities given to system

performance and the array expansion process can be adjusted

by use of the Background Task Priority setting in Storage

Manager.

Dynamic Array Expansion maintains the performance gains of RAID 0

and RAID 5, spreading accesses randomly across the drives in the array.

The DPT controller presents the same number of LSUs to the operating

system after the expansion. There is no need for manual load balancing,

which would be required if the new space were presented as an additional

LSU.

Requirements and Restrictions

Expand refers to the process of adding additional space to an existing

array group using the Dynamic Array Expansion feature. Extend refers to

the process of adding the new space created by the array expansion to the

existing Windows NT volume (LSU).

Dynamic Array Expansion has the following system requirements:

• Windows NT Server or Windows NT Workstation (Version 4.0 and later

with the most recent Service Pack).

• Dynamic Array Expansion requires the I

O OSM supplied by DPT.

The Microsoft-supplied OSM does not support Dynamic Array

Expansion.

• Dynamic Array Expansion and volume extension is supported only for

RAID 0 or RAID 5 array groups using the NTFS file system.

You cannot extend a volume that has a FAT partition. The expanded

space must be added as a separate LSU.

You cannot extend the Windows NT boot partition.

• The array must have Optimal status before beginning the expansion.

If the array status is not Optimal, correct the problem and complete a

rebuild of the existing array before continuing with expansion.

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Acer SmartRAID V Bedienungsanleitung Seite 137