LSI Logic LSI MegaRAID SAS8704EM2/SGL Raid Controller 4-Port intern

•Four internal SAS/SATA ports
•One Mini-SAS SFF-8087 x4 connectors
•3Gb/s throughput per port
•LSISAS1078 RAID on Chip (ROC)
•500MHz power-PC
•Hardware RAID 5 & 6 parity engines
•Low-profile MD2 form factor (6.6ö X 2.536ö)
•x8 PCI Express host interface
•128MB DDRII Cache (667MHz)
•Optional battery backup unit (direct attach)
•Connect up to 32 SAS and/or SATA devices
•RAID levels 0, 1, 5 and 6
•RAID spans 10, 50 and 60
•Auto-resume on rebuild
•Auto-resume on reconstruction
•Online Capacity Expansion (OCE)
•Online RAID Level Migration (RLM)
•Comprehensive RAID management suite
•Global and dedicated hot spare with revertible hot spare support
•Automatic rebuild
•Enclosure affinity
•Emergency SATA hot spare for SAS arrays
•Single controller multipathing (failover)
•I/O load balancing
•Support for extended RAID 1 volumes of up to 32 devices