I work on a server team and have recently acquired RightFax as our enterprise fax manager. It has been suggested we add another hard drive to the two clustered nodes, and place only the swap file on these drives. NO configuration of the drives currently setup is required or needed at ALL in the existing array. The issue is, we are primarily a HP, with a handful of Dell servers shop. I know exactly how to expand an array on those from within Windows without taking the server down. A consultant setup our RightFax environment before I was on this team, and used IBM servers x3650 M2 servers. They did not install the array configuration utility (or equivilant) on the servers I'd expect to see when logging into Windows. I was hoping/wanting to put the drives into the server, then launch the ACU (HP Equivilant), and configure the drives as a separate mirror, then place the swap flies on the drives. My problem is I do not know what the software is called that I need to install and use to do this, since I have not worked on IBM servers before. I do not want to do this from the BIOS and take the servers down, since they are in constant use. Can someone please get me started and tell me what the name of the IBM software is, that I need to install, to configure the array ( a separate mirror) after adding the new disk for these IBM servers? They are just 73GB drives (two per server - mirror needed - new logical drive to show up on server). I think the software is called serveraid, but there is so much documentation out there at the IBM site, I would just prefer to download/install the ACU for IBM, and move on with this and not let it require hours of my time and research that I don't really have. Any assistance is greatly appreciated. The servers are IBM x3650 M2 servers, and they are both running Windows 2008 R2 x64. Thanks in advance! If I just know what the software is, make sure I have the correct version, and can configure the new mirrors from within Windows, then I think I can probably handle from there. I hope it is as I think it can be, by simply doing it in a similar way that you would with HP Proliants and the ACU they have.