On 12/23/2010 1:18 PM, Andrew Hume wrote: > we (some folks at work) have built two backblaze boxes > (roughly speaking, a linux box with 45 2TB drives). > > i think i know how to deploy such a beast, but wanted to check > my understanding, which is that mdadm is the tool of choice, > and that for performance and reliability, raid10 is the sweet spot > (specificly, not RAID5). > > does anyone have anything specific to say about mdadm, > and the raid it produces, either good or bad? > Raid-wise: works fine reporting wise: very verbose
If an md set fails, you will likely get a separate report for every disk in the raid group. It's a bit annoying, and we're looking at various ways around this. backblaze: be sure to test the failure scenario where the the power supply that controls all the cooling fails while the power supply that supplies all the disk doesn't. It would be interesting to know what you find? (I think I wouldn't use these without mirroring them completely) _______________________________________________ Tech mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
