On 11/28 09:00 , John Rouillard wrote: > To do this, I limit the number of simultaneous backups to 4, and use > --bwlimit 100 to limit the sending rsync speed. This gives us a total > of 3,276,800 bits/sec approx. It can be a bit higher at tims, but > averages out.
I've never had good luck doing more than 2 backups simultaneously; tho if the bandwidth is limited enough it might not crush the disk too badly. Good on you for getting that to work well for your environment. Anything in particular you did to get that many concurrent disk-acessing processes to not interefere with each other too badly? (I presume you tested it with different levels of concurrency.) > We are seeing gaps in backup coverage, the worst was a system without > backups for three days We have had up to 10 systems with at least 1 > day's backups missed. Since this is bad (TM), I am looking for ideas > on solving this problem. I've seen this happen myself. Usually it's transient enough that I don't worry about it too much. If it did become a problem (as apparently it is in your environment) I'd suggest getting another backup server, and perhaps migrating backups of troublesome hosts off to it. That way the non-troublesome backups can run without interference. The downside of course is that the troublesome backups are all concentrated on one server instead of spread out over several. BackupPC scales horizontally far better than vertically. -- Carl Soderstrom Systems Administrator Real-Time Enterprises www.real-time.com ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ BackupPC-users mailing list [email protected] List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
