Hello rtp82 The maximum amount of supported drives in the server is 4, so you should be able to add 2 more. The maximum supported drive size is 2TB, so yes you can get larger than 250GB drives. RAID 1 is 2 drives and 2 drives only, so no, you cannot add the new drives to the existing array. The new drives will need to be in a new RAID 0, 1, or in non-RAID mode. You will not need to change anything with the current RAID 1 unless you want to. Thanks
I have a T300 with 2 250GB Sata drives in a RAID 1 setup running Windows server 2008.  The controller being used is a SAS6/IR, ADAPTER..  I would like to had additional storage space but I am not sure what this controller will handle.  Can i add another pair of the 250GB Sata drives in a Raid1 and add it to the existing drives without rebuilding the raid or will they need to be a separate volume.  Also can I use larger drives if needed.  Thanks
Adding Drives to a Poweredge T300