IBM System x3650 M4 BD Product Manual page 18

The IBM N2215 SAS/SATA HBA has the following specifications:
Eight internal 12 Gbps SAS/SATA ports
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Up to 12 Gbps throughput per port
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Two x4 HD mini-SAS internal connectors (SFF-8643)
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Supports connections to SAS/SATA HDDs and SATA SSDs
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Optimized for SSD performance
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No RAID support
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PCIe 3.0 x8 host interface
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Based on the LSI SAS3008 12 Gbps controller
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The ServeRAID M1215 SAS/SATA Controller has the following specifications:
Eight internal 12 Gbps SAS/SATA ports
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Up to 12 Gbps throughput per port
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Two internal mini-SAS HD connectors (SFF-8643)
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LSI SAS3008 12 Gbps RAID on Chip (ROC) controller
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Support for RAID levels 0, 1, and 10 standard; support for RAID 5, 50 with optional FoD upgrade
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Zero Controller Cache, no battery/flash backup
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Optional support for self-encrypting drives (SEDs) with MegaRAID SafeStore (with RAID 5 upgrade)
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Fixed stripe size of 64 KB
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For more information, see the list of IBM Redbooks® Product Guides in the RAID adapters category:
http://www.redbooks.ibm.com/portals/systemx?Open&page=pg&cat=raid
IBM System x3650 M4 BD Product Guide 18