Note:

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Disk Drive and Enclosure Protocol Support
SAS protocol: 12Gb/s, 6Gb/s
SATA protocol: 6Gb/s
SAS Connectors 4 external 2x ports to support up to four 12Gb/s SAS Switches
SAS Port Link Rate 12Gb/s per physical link
PCIe Link Rate PCIe3 x8
Memory Bus Speed DDR3-1866MHz, 72-bit wide bus at 12.8GB/s (4 GiBytes cache module)
Physical Drives Supported Up to 227 zoned physical drives
Logical Drives Supported 64 logical drives
Memory Addressing 64-bit, supporting servers memory space greater than 4GiB (4.4GB)
RAID Support
RAID 6, 60 (Advanced Data Guarding)
RAID 5, 50 (Distributed Data Guarding)
RAID 1, 10 (Drive Mirroring)
RAID 1 ADM, 10 ADM (Advanced Data Mirroring)
RAID 0 (Striping)
Upgradeable Firmware Flashable ROM with redundant firmware images