I setup a Dell R900, which has two RAID 1, 136GB drives (so there are four 136GB drives). After I did the install, I only get one of the RAID 1 array's. How Do I add the other local storage from the other array?
Rescan your storage adapters, then go and select the option to Add Storage - you should see the new array. Select the array and format it as VMFS for your datastore (select the correct block size etc).