User guide

1–4 Introduction
Hitachi Unified Storage VM Block Module Hardware User Guide
Controller configuration and components
The HUS VM controller chassis is vertically divided into two sections called
clusters. Each clusters contains a Main blade, a Microprocessor (MP) blade,
at least two host I/O modules and back-end I/O modules, and two
redundant power supplies. Both clusters share a single service processor.
The following illustrations show the front and rear views of a controller
chassis. The table following the illustrations describes each component.
Figure 1-2: Controller chassis - 3D views