Adaptec 5325301507 Administration Guide - Page 81
Managing Expansion Array Storage, Storage > Disks/Units
UPC - 753253015740
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Expansion Arrays Managing Expansion Array Storage Disk drives on expansion arrays are not preconfigured, but are shipped as unassigned disk drives, allowing administrators to configure the array as appropriate. The Storage > Disks/Units screen displays the head unit and any expansion arrays attached to the head unit. For more information about the Disk/Units screen, please see "Disks and Units" on page 67. The disk drives of an expansion array are completely integrated into the host SnapServer's logic. The default RAID configurations can be deleted and the internal and external disk drives recombined as necessary. For example, to create one large RAID, you could delete the existing RAIDs on both the host server and the expansion array, then combine all drives into one high-capacity storage system. This configuration reduces administrative complexity and overhead, but the failure of any one unit in the system (due to a cable coming loose, for example) will render the entire RAID inaccessible. This configuration also increases the potential for Chapter 4 Storage Configuration and Expansion 65