32 System overview
5U enclosure core product
The 5U chassis consists of a sheet metal enclosure, integrated PCBs, and a module runner system. The design
concept is based on an enclosure subsystem together with a set of plug-in modules. A typical enclosure system—as
supplied—includes the following:
• An enclosure chassis consisting of:
ï‚¢ Two sliding drawers for holding Disk Drive in Carrier (DDIC) modules (42 disks per drawer).
 An Operator’s (Ops) panel installed on the left ear and a protective cover for the right ear.
ï‚¢ An enclosure bezel (a bezel cover on each drawer face).
ï‚¢ A midplane PCB into which other components and CRUs connect.
ï‚¢ Four sideplanes and six baseplanes providing connectivity for front-end components.
• Two power supply units.
• Five fan cooling modules.
• Two expansion IOMs: 2 x SBB-compliant interface slots.
• Up to 84 DDIC modules populated within two drawers (42 DDICs per drawer; 14 DDICs per row).
TIP: The 5U84 does not ship with DDICs installed. DDICs ship in a separate container, and must be
installed into the enclosure drawers during product installation and setup. See the Installation checklist
table on page 59.
• A rail kit for rack mounting.
NOTE: 5U84 enclosure configuration characteristics
• D3284 is the high-density 5U84 expansion enclosure. It is not configured or used as a controller enclosure.
• The D3284 is supported by DS6200/DS4200 controllers, however, it is not supported by DS2200 controllers.
• A maximum of three D3284s can be cascaded from a supported DS6200 or DS4200 RBOD.
• Although the storage system supports intermixing of 2U expansion enclosures, D3284 expansion enclosures
cannot be intermixed with 2U expansion enclosures.
IMPORTANT: To ensure sufficient circulation and cooling throughout the enclosure, all PSU slots, fan cooling
module slots, and IOM slots must contain a functioning CRU. Do not replace a faulty CRU unit the replacement is
available in hand.
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