IBM DCS9550 1S1 manual Enclosure Bay Numbering Convention, 1Module locations

Installation

Table 2–1	DCS9550 1S1 Storage Expansion Unit Configuration
Module		Location
Blank SCM I/O		Install in rear Bay 4.
Modules
Ops Panel		(integral part of chassis assembly). Installed in rear Bay 2.

Caution Dummy Carriers and Blank Modules MUST be fitted to ALL unused bays. There is inadequate drive cooling if any are left open.

Figure 2–1Module locations

2.1.1Enclosure 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 numbered from 1 (top row) to 4 (bottom row). Drive Carrier Module locations are identified from a matrix of the top and side numbers.

•The rear bays are numbered 1 to 5 from right to left, as viewed from the rear.

16 IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation, Service, and User Guide