IBM x3690 X5 Service Manual page 303

This configuration consists of one 8x1.8-inch drive backplane and requires two
SAS signal cables. You can also install the optional simple-swap 2.5-inch SATA
drive kit in this configuration.
The following illustrations show the supported combination of drive backplane
configurations that you can use to support 12 drives:
This configuration consists of three 4x2.5-inch drive backplanes and requires
three SAS signal cables.
This configuration consists of one 8x2.5-inch drive backplane and one
4x2.5-inch drive backplane and requires three SAS signal cables.
This configuration consists of one 4x2.5-inch drive backplane and one
8x1.8-inch drive backplane and requires three SAS signal cables.
8 9 10
0 1 2 3
The following illustrations show the supported combination of drive backplane
configurations that you can use to support 16 drives:
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Chapter 5. Removing and replacing components
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