Lenovo System x3950 X6 Product Manual page 39

The ServeRAID M5120 SAS/SATA Controller has the following specifications:
Eight external 6 Gbps SAS/SATA ports
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Up to 6 Gbps throughput per port
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Two external x4 mini-SAS connectors (SFF-8088)
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Supports RAID 0, 1, and 10
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Supports RAID 5 and 50 with optional M5100 Series RAID 5 upgrades
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Supports RAID 6 and 60 with the optional M5100 Series RAID 6 upgrade
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Supports 512 MB or 1 GB flash-backed cache
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PCIe 3.0 x8 host interface
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Based on the LSI SAS2208 6 Gbps ROC controller
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Supports connectivity to the EXP2512 and EXP2524 storage expansion enclosures
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For more information, see the Lenovo Press Product Guide ServeRAID M5120 SAS/SATA Controller for
System x , TIPS0858, found at the following website:
http://www.redbooks.ibm.com/abstracts/tips0858.html?Open
System x3950 X6 39