My Setup: - 5.1 MP with 3.4 ghz hex core/24gb 1333mhz ram/ML 10.8.1 - Areca 1882-ix-12 firmware 1.51/Battery Backup Unit/4gb Cache - Boot Drive - Pair of 240gb Intel 520 SSD in raid 0 connected to Areca card internal port SFF-8087 - Data Drives - 8 WD RE4 2tb drives in 14tb raid 5 with 128k stripe (all new drives with latest B01 firmware) - Enclosure - Cineraid CR-T08E enclosure (http://www.cineraid.com/products/editpro_x_t08e.htm) and connected via 2 SFF-8088 mini-sas ports - Mini-sas adapter - ADP-8873-2X (http://www.cs-electronics.com/mini-sas_adapters.htm) to allow second mini-sas cable to be attached My Problem: When testing 8 drive raid 5 with AJA system test or Blackmagic I get reads of 630mbs and writes of 1120mbs...shouldn't the reads be much better in a 8 drive Raid 5 setup? Here is a comparable setup: http://www.arecaus.com/areca_tests_1882x_mac_8_st33000650ns.htm I realize those test drives were 6Gb/s SATA and mine are 3Gb/s sata but I still thought I should get much better read speeds? Before I switched to the Cineraid enclosure, I had a internal 6 drive raid 5 setup (same WD drives and Areca card) with read/writes of approx 750/750 mbs...which seems appropriate for that setup. So why are my 8 drive raid 5 read numbers so SLOW? What I've tried: 1. Tested same 8 drive setup in Raid 0 and saw approx 1350/1350 read/writes...so the system is capable of very fast read/writes. 2. I have tried a variety of different settings on the Areca card and nothing seems to make much difference. 3. Switched out cables. 4. Switched ports on the card. 5. Switched ports on the enclosure. 6. Contacted Cineraid and Areca tech support...still working with both to see if they have any other solutions. Any thoughts to whats leading to the slow read numbers in my raid 5 setup...I don't think it's a problem with the hard drives because the raid 0 numbers are right where they should be and the raid 5 writes are where they should be, it's only the raid 5 reads that are SLOW. Thanks in advance and sorry for the long post.