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Modular RAID Controllers
Modular RAID 12Gb/s (SAS3.0)
5.2.1 Features
The RAID controller "PRAID EM400i " implements the LSI SAS3108 which is an
integrated SAS and I/O controller with dual embedded Power PC 476 cores
running at speeds up to 1.2 GHz. The LSI SAS3108 also provides the following
functionalities:
●
Provides an 8-lane 8.0 Gbit PCIe 3.0 host bus.
●
Provides an 8-port 12Gb/s SAS3 and 6Gb/s SATA3 interface.
●
Provides a 40-bit or a 72-bit 1866-MHz DDR3 SDRAM interface with a
hardware RAID assist engine for parity calculations.
●
Provides a full-featured hardware-based RAID solution that supports RAID
levels 0, 1, 5, 6, 10, 50, and 60.
●
Six I
2
C interfaces used for Serial Boot strap ROM connection, memory
detection, PCI-E SMBus connectivity, battery / smart charger control, and
SAS sideband control.
●
Integrated dual UART for MegaRAID
®
diagnostic use only.
●
Two banks of SGPIO signals to accompany the two sets of x4 SAS / SATA
ports.
●
16MB Flash
●
1kB Bootstrap EEPROM
●
Raid-key chip onboard
●
Onboard Flash for performing DDR3 SDRAM cache offload function to
protect data cache in case of host power failure.
5.2.2 Controller versions
Name Chip PCIe Cache
No. of SAS
channels
Bracket
type
PRAID EM400i
S26361-
D2916-A10
LSI SAS3108 PCIe 3.0 1 GB 8
low profile
full height
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