Dear Everybody, I am telling you the whole story, perhaps you can give me a better idea. Almost 3 years ago I purchased Arima HDAMA rev. G motherboard with integrated Silicon Image Sil3114 Serial ATA 4 Ports SATA I adapter. ( http://www.arimacorp.com/ViewProduct.asp?View=86 ) . BIOS version is 2.13. My intention is to make a file server, using linux software raid, so I bought 2 new shiny 1TB SATA II disks, and installed them. Unfortunately the system does not boot - hangs in the Sil 3114 BIOS initialization stage. Apparently this is a known problem with Sil3114 and Sil3112: ( http://forums.seagate.com/stx/board/message?board.id=ata_drives&message.id=970 ) The Silicon people have issued a BIOS update for this issue, however they explicitly state - only for ADD-IN cards. Perhaps, integrated controlers share the same eeprom chip with the motherboard BIOS, and an attempt to flash it - will render the system unbootable. For integrated controllers - the mainboard producer should provide the update. Apparently the Arima people have sold their business to http://www.flextronics.com/en/default.aspx. The new site is at http://www.flextronics.com/arima/server/Product/ViewDownload.asp?View=HDAMA%20rev.G. The last BIOS update is from 8/30/2006. And I think this patch well predates the 1TB hard disks and has been issued before SiliconImage's patch: ( http://www.siliconimage.com/support/supportsearchresults.aspx?pid=28&cid=15&ctid=2&osid=0& ) . So I am not willing to risk a BIOS update and I have decided to spend additional cash on a cheap but fast 4 port SATA II controller and use it with Centos 5.2. Where I reside, the following two have caught my attention: ADAPTEC SATA RAID 1420SA Serial ATA-150/Serial ATA II-300 PCI-X 4ch for 120 USD ( http://www.adaptec.com/en-US/products/Controllers/Hardware/sata/entry/AAR-1420SA/ ) and PROMISE FastTrak TX4300 Serial ATA II-300 PCI 4ch for 160 USD ( http://www.promise.com/product/product_detail_eng.asp?segment=RAID%200/1%20HBAs&product_id=137 ) Do you have any experience any of these 2 adapters, operating as plain SATA controllers, under linux software raid? Which one would you recommend? Best regards, Alex