Looking at the Dell PowerEdge 440SC web page for Colombia. The box will have two 250 GB SATA drives. The HD controller is: SAS 5IR SAS,Internal Raid Adapter (SAS5IR) for HD Configuration) the options are: (1) Add-in SAS5iR (SATA/SAS Controller)-RAID 0 (ASASR0) (2) Onboard SATA, 2 Drives connected to Onboard SATA Controller No RAID (MST2) (3) Add-in SAS5iR (SATA/SAS Controller) which supports 1-2 Hard Drives-No RAID (ASAS) (4) Add-in SAS5iR (SATA/SAS Controller)-RAID 1 (ASASR1) Apparently the cost for them is the same. Option 1 (RAID 0) or Option 4 (RAID 1)? Suggestions solicited! TIA, Lanny BTW: I plan to put CentOS on it. If Dell installs Linux, with 1 year support, down here they charge: (a) Red Hat Enterprise Linux ES 4, 1 year subscription to Red Hat Network, English (RH4ES1) [about US$400] (b) SUSE Linux Enterprise Server 10, 1 CPU, 1 YR Subscription, FI (SL101S1) [about US$160]