Alcatel-Lucent 7210 SAS M Interface Configuration Manual page 96

Configuration Process Overview
2. This step is required only if the platform supports use of physical MDAs, like the 7210
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Guide
SAS-M. It is not required on platforms that do not support an MDA, like 7210 SAS-X,
7210 SAS-T, and 7210 SAS-R6. 7210 SAS-Mxp does not have a expansion slot (and
hence does not support MDA.
7210 SAS M, T, X, R6, Mxp Interface Configuration