On 7.3.2012 20:33, Ray Morris wrote: >> drives or controller? > Don't forget cables and loose connections. > We've had more cable problems than anything else. Sorry, I should've probably mention the hardware specs in the first place: The server is an Intel SR2612UR with 12-drive SAS/SATA backplane with an Attotech ExpressSAS H608 (PCIe) SAS controller and a single Mini-SAS SFF-8087 cable between controller and backplane. Drives are 'WD1002FBYS' (WD RE3 'enterprise' models), 7 of them (6 RAID5 + 1 spare). The OS (OpenSuSE 11.4 x86_64) is installed on a separate SATA SSD, connected to on-board SATA controller. The driver for the controller is 'esas2hba' version 1.65, supplied by Attotech. D. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html