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Connecting the Model 092 expansion enclosures
After you install the Model 092 expansion enclosures into the rack, you must connect them to each
system that will use them.
Note: When you insert SAS cables, ensure that the connector is oriented correctly to the node and the
expansion enclosure.
• The blue pull tab must be above the connector (in Figure 50 on page 62).
Figure 50. SAS cable connector orientation
• Insert the connector gently until it clicks into place. If you feel resistance, the connector is probably
oriented the wrong way. Do not force it.
• When inserted correctly, the connector can be removed only by pulling the tab.
Attention:
• No cable can be connected between a port on a left canister and a port on a right canister of the
expansion enclosures.
• Ensure that cables are installed in an orderly way to reduce the risk of cable damage when
replaceable units are removed or inserted.
• SAS cables must be routed through the cable management arms to reduce the risk of
disconnecting the nodes from their storage arrays. This step also helps to protect the SAS cables
from getting damaged if you slide the node or enclosure out of the rack while they are attached.
Powering on the Model 092 expansion enclosure
Use the following procedure to provide power to the Model 092 expansion enclosure as part of the initial
installation process or after a service procedure.
Important: Before you connect the power cables to the rear of the enclosure, always check that the
expansion enclosure is secured in the rack. If needed, tighten the thumbscrews on the front of the
enclosure (
2
in Figure 51 on page 62) to ensure that the enclosure drawer does not roll open.
The Model 092 expansion enclosure has two power supply units (PSUs) that are accessible from the front
of the enclosure (
fascia (
5
).
Figure 51. Features on the front of the Model 092 expansion enclosure
62 IBM Elastic Storage System 5000: Model 092 Hardware Guide
4
in Figure 51 on page 62). As the figure also shows, the PSUs are covered by the 1U
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