raid 5 to raid 1

[John_valtore]

Sorry if my english is not so good.

I have a DL385 G2 configured with 4 SAS 72Go in raid 5. There is 2 partition on it. The first one (C:\) has a capacity of 20Go and only 10Go used and Windows 2003 installed on it. The second (D:\) use the remaining space of the raid 5 and has only 50Go used for data and a program installed on it.

I would like to replace this 4 x 72Go disk in RAID 5 for 2 x 144Go disk raid mirror. I must keep 2 partitions but the D: partition can be reduce of size.

Some people know how can i achieve this easily and safely?

Thansk a lot in advance!