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Enclosure Bay Numbering Convention - IBM DCS9550 1S1 Installation & Service Manual

Storage expansion unit
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Table 2–1
Blank SCM I/O
Ops Panel
Figure 2–1

Enclosure Bay Numbering Convention

The enclosure bay numbering convention is shown in Figure 2–1. A bay is defined as the space
required to house a single 1.0 inch high 3.5 inch disk drive in its carrier module. For example,
a 1 x 4 bay module would take the space of 1 drive width by 4 drive bays high (in the rack
mount configuration).
The DCS9550 1S1 Storage Expansion Unit is housed in a 4 x 4 enclosure, that is, 4 bays wide
by 4 bays high.
• The front bays are numbered 1 to 4 from left to right, as viewed from the front. Bays are
• The rear bays are numbered 1 to 5 from right to left, as viewed from the rear.
DCS9550 1S1 Storage Expansion Unit Configuration
Install in rear Bay 4.
(integral part of chassis assembly). Installed in rear Bay 2.
Dummy Carriers and Blank Modules MUST be fitted to ALL unused bays.
There is inadequate drive cooling if any are left open.
Module locations
numbered from 1 (top row) to 4 (bottom row). Drive Carrier Module locations are
identified from a matrix of the top and side numbers.
IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation, Service, and User Guide


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