> I am puzzled by why write-mostly. Ostensibly Gb ethernet is supposed to > nearly equal the data transfer rate of the controller cards, and be many > times the speed of actual data transfer from the drives. Not at all. Some multilane solutions can manage close to 300MBps per drive. The absolute maximum throughput of a Gig-E is right at 120MBps. OTOH, 50 - 60 MBps may be far more than you need, in which case Gig-E is fine. > So shouldn't a NAS have plenty of bandwidth to accommodate most any drive > operations? For your case, perhaps, but you were the one concerned about performance. > I will be setting up a small high-perf drive for / (including database) so > the only data on the array will be /home (including large videos). Why are you putting the array in /home? Does MythTV require it? If not, personally, I would recommend a separate directory for the recordings and not in /home. I mount my array in /RAID and put the recordings in /RAID/Recordings. > Seems like there is no need to specify write-mostly? For your setup it may or may not result in some performance gain. Certainly reading the material strictly from the local drives will probably result in higher throughput, but a lower througput for reading the videos during commercial flagging might actually result in better responsiveness of your MythTV menus. -- 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
