Modular 2U SAS expansion unit
The AMS Modular 2U SAS expansion unit contains two redundant power
supplies, two ENC interface units, and from two to 24 SFF disk drives.
Figure 1-17 shows the front (above) and rear (below) views of the AMS
Modular 2U SAS expansion unit.
Figure 1-17: Modular 2U SAS Expansion Unit Front and Rear Views
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Introduction
Hitachi AMS 2000 Family Storage System Service Guide