This is my 1st RD220 Part # 379813U and I have two questions.
1) Does this server require a separate controller to provide raid 5 ? or does it support raid 5 out of the box?
2) I also ordered qty 4 part # 67Y0121 500GB hard drives. Do they come with the HS rails or do I need to order them also?
Depending on the RD220 model, RAID 5 is supported with the included controller. The 3798-16U model supports RAID 0, 1, and 1E where the 13U, 1FU, and 1LU models support RAID 0, 1, 1E, 5, 6, 10, 50, and 60.