Hi, Many thanks for all the quick and helpful responses so far! On Tue, Jan 23, 2018 at 06:40:14PM -0600, Stan Hoeppner wrote: > > Could someone elaborate further on this? Does "interacts very > > badly" mean that there will be potential data loss / data > > corruption? Or does "very badly" just mean short, temporary > > performance issues / lags upon a disk failure? > > Potential data loss / data corruption. Don't use USB. Use eSATA instead. > The list archives of linux-raid and linux-xfs are dotted with USB disk > horror stories. Interesting. Do you know what they could be attributed to technically? Were they usually similar to what Vojtěch had described, so connectivity issues due to the poor connectors and thin cables which can often be found with USB? And things then fell over when for a brief moment connectivity issues occured for more disks than redundant disks were configured? Or do the extra latencies with USB create an extended exposure to the write loop hole in RAID5? Or something else? Would you guys say that ARM boards with a SATA connector internally weird to USB (for instance the Ordoid HC2[*]), and then maybe some SATA Port Multiplier are similarly affected? Or would say that those are mainly unaffected of the common issues with RAIDs via SATA over USB? Regards, Linus [*]: http://www.hardkernel.com/main/products/prdt_info.php?g_code=G151505170472&tab_idx=2 -- 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
