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How to desgin a backplane from SAS controller to SATA device?

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Enshuo

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Hi experts,
I study a SAS 9305 HBA card through a backplane to SATA HDD, how to design the backplane?

The left side is miniSAS HD and the right side is SATA.
1599212215493.png

I checked the pinout SAS and SATA is the opposite. Since 9305 HBA is SAS controller, should I follow SAS pinout? or stick to SATA pinout.
For example, SATA0_TX_DP/N from HBA should connect to S6/S7 or S2/S3 for SATA HDD.

Furthermore, it's 29 pins SAS connector on BP. It should be compatible with SATA HDD, right?
SAS (SFF-8482)
1599212594842.png
SATA
1599212640508.png
 

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