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4U Server; 8 SAS/SATA and 16 E3.S drives
This R960 configuration supports 8 SAS/SATA drives on backplane 1 and 16 E3.S drives. The 8 SAS/SATA drives are connected to CPU2 through PERC11. As for the 16 E3.S drives -- the first 4 E3.S drives connect directly to CPU4, the second 4 E3.S drives connect directly to CPU2, the third 4 E3.S drives connect directly to CPU3, and the last 4 E3.S drives connect directly to CPU1.