Help needed: How to rebuild new Raid-5 Configuration

[Raquel Lijkwan]

Hi all,

I am new to this so any help in this will be much appreciated
We are short on disk space and plan to increase capacity by replacing the existing Raid-5 configuration

Can someone tell me or give me any idea what will be the best way or solution to deal with this?
Just to give you some background information
Type of the server: Proliant DL380 G4
Bios version: HP P51
OS: windows server 2003
Smart_Array_Configuration
Two Arrays -> Array A (Raid 1+0) >>> used for Win OS in of course will stay in place
??? Array B (Raid -5) NEEDS >>> used for data storage to be Replace/Upgraded by larger HDD

4 disk * 146.8 GB where used for Array-B and the plan is replace these HDD by 4* HP 300 GB 15k Ultra320 Hot plug (part no. 411089-b22)
This server is used as a File Server so caution is in place.
(Hp Management Utility tool is installed)

Can someone tell me or give me any idea what will be the best way or solution to deal with this?

Thanks in advance.

Raquel