RAID
The L5-25121-27 is a RAID controller manufactured by the LSI Corporation. This controller has 8 external ports, is PCIe 3.0 x8 compatible, and supports a maximum number of 32 SAS/SATA devices. It supports RAID levels 0, 1, 5, 6, 10, 50, and 60. It is capable of simultaneous read and write operations, Online Capacity Expansion and Migration, and Configurable Drive Global Hot Spares. The cache size is 2GB and is Battery-Backed Write Cache (BBWC). It includes 6Gb/s SAS ports.