67Y2639 - Lenovo ThinkServer 8708EM2 3Gb/s 8-Port PCI Express X8 SAS/SATA RAID Controller

The eight-port MegaRAID SAS 8708EM2 (67Y2639) eliminates the need to choose between cost and performance by supporting both high-capacity SATA drives and high-performance SAS drives. This adapter is ideal for internal SAS/SATA storage systems using up to 32 SAS or SATA hard drives. Featuring the LSISAS1078 ROC, a PCI Express host interface and 667MHz DDRII, the MegaRAID SAS 8708EM2 is a high-performance RAID adapter with advanced data protection capabilities for low-cost server and nearline applications.Performance specifications:- Eight internal SAS/SATA ports.- Two 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.- MD2 Low profile (6.6" X 2.536").- x8 PCI Express host interface.- 256MB DDRII Cache (667MHz).- Optional battery backup unit.- Connect up to 32 SAS and/or SATA devices.- RAID levels 0, 1, 5 and 6 and RAID spans 10, 50 and 60.- Auto-resume on rebuild and Auto-resume on reconstruction.- Online Capacity Expansion (OCE) and Online RAID Level Migration (RLM).- Global and dedicated hot spare with revertible hot spare support.- Automatic rebuild.- Enclosure affinity.- Emergency SATA hot spare for SAS arrays.- Single controller multi-pathing (failover) and I/O load balancing.