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Figure 6. Enclosure: rear view
The enclosure core product
The IBM ESS expansion design concept is based on an enclosure subsystem together with a set of plug-in
modules.
A typical enclosure system for direct dock comprises:
• An enclosure chassis comprising the following parts:
– Two sliding drawers containing Disk Drive In Carrier (DDIC) modules
– An operator’s (ops) panel
– A front bezel
– A midplane PCB into which other components connect
• Two Power Supply Units (PSUs).
• Five cooling modules.
• Two SBB I/O modules.
• Up to 84 Disk Drive In Carrier (DDIC) modules with drives installed.
• A rail kit for rack mounting.
Important: To ensure correct airflow and cooling, all PSU bays and cooling module bays must contain a
functioning unit. If the enclosure is run with a single SBB I/O module, the other I/O module bay must be
filled with a blank module. Each row of drive bays must be completely empty or completely full.
10 IBM ESS expansion: Installation and User Guide - Model 084
Summary of Contents for 084
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