SAS cable connections

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The following figure and steps describe how to connect the SAS cables from a single IBM COS Small Disk Enclosure connected to a single IBM COS Controller Node, and when to power the unit on.

Figure 1. SAS cable connections
SAS cable connections
  1. Important: The COS Controller Node and the COS Small Disk Enclosure must be powered off before attaching the first of the two supplied Mini-SAS HD cables.
    Make the first cable connection between the far-left port on the HBA as shown in the figure, and the far-left port on the I/O Module installed in the small disk enclosure. The second cable is connected between the second port from the left on the HBA and the middle port on the I/O Module.
  2. Power on the COS small disk enclosure.
  3. Wait 3 minutes.
  4. Proceed to power on the Controller Node.