Changed hard drives for a RAID10 array. New drives are double the storage capacity. The array is 4 Maxtor Atlas V SCSI and an Adaptec 2120S Card. The Computer is running Windows 2003 Server Ent. the array is for a data drive and accessed by domain user for variuos data bases, documents, etc. It is not the OS/Program files drive. The drives are in and the array expanded. So far so good. The question is how do I get the unpartioned space to be part of the exsisting data drive? I don't want a new drive letter as this will cause confusion. I want domauin users to see the same as they do now but with more room.