For quite some time I was thinking of using the 3 SAS drives from my DL380 G5 in my PC instead of my Hitachi SAS. Today I finally decided to benchmark both my drive and the 3 drives in the DL which are in RAID 0. I always come up with weird results which probably come from using different RAID controllers. My PC uses an Adaptec 2405 with 128MB cache (write-back cache), on the DL there is a HP P400 controller with 256MB of cache (no idea if it's write-back or write through I tried different settings regarding caching and come up with even worse results). Hitachi drive is a HP branded drive (450GB) with 4 platters spinning at 15k RPM and it's a standard 3.5'' drive. The drives in RAID 0 are 3 Seagate HP branded drives (146GB each) with 2 platters spinning at 10k RPM and are 2.5'' (If I remember correctly they are Seagate Savvio 10.2). I remember doing benchmarks on the Seagate drives before putting them in RAID 0 and I was getting around 75-80MB read, that is why the following results seem weird to me. This is my Hitachi drive (ignore the burst speeds and CPU utilization): This is the RAID 0 on the DL (ignore the dips since they are probably cause by system access): I proceeded with ATTO: My Hitachi drive: RAID 0 on the DL: Now this is my problem, the numbers with RAID 0 are all over the place this is only one of the runs I made. Some came much better than my Hitachi, others about the same, the one posted is probably the worst of all, am I missing something? Either way I continued to do more benchmarks, next is HD Tune (I heard it doesn't do well with RAID's but I ran it anyway). Seeks (Hitachi): RAID 0 on DL: Obviously the Hitachi is better because of 15k RPM Next, sequential read. Hitachi: RAID 0 on DL: Again, ignore the bursts and the CPU usage. Before you ask why I didn't run the 3 drives from my server on my Adaptec controller, well I need to get 3 adapters for the connectors, since the 3 drives are HP hot-swap and don't have separate connector for the interface cable and power cable. So my question is: is it worth using the 3 SAS drives instead of my Hitachi, or should I get the adapters and try them on my Adaptec which is probably a better card than the HP P400 controller.