Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Am Donnerstag, 13. Mai 2010 17:01:46 schrieb Bart Coninckx: > Hi, > > would it make sense to use four bonded gigabit NICs when the DRBD storage > is, let's say, a RAID 5 on 10K RPM SAS drives? Or would 2 cards be > sufficient? I don't have the drives and the controller yet, so I have no > idea on what their performance is. > > I'd like to order all hardwa of the dre at once, but it is hard to get a grip on > possible performance values. > > Anyone any "feel" for this? the answer to this question mainly depends on the performance of your drives. In any case I'd advise to use at least a boding of two interfaces. So you have redundancy if one line fails. From your measurements (netperf) we know that you get nearly 2 GB/s over this line with the right bonding mode. The rest really depends on the performance of your drives and what you want to do with it. But from out measurments with bonnie we learned that the performance of the drives if the bottleneck and not thethroughput of the interfaces. At least not in our tests with 6 x 15k SAS drives in a RAID5 array and a 2 Gbit bond. Greetings, -- Dr. Michael Schwartzkopff MultiNET Services GmbH Addresse: Bretonischer Ring 7; 85630 Grasbrunn; Germany Tel: +49 - 89 - 45 69 11 0 Fax: +49 - 89 - 45 69 11 21 mob: +49 - 174 - 343 28 75 mail: misch at multinet.de web: www.multinet.de Sitz der Gesellschaft: 85630 Grasbrunn Registergericht: Amtsgericht München HRB 114375 Geschäftsführer: Günter Jurgeneit, Hubert Martens --- PGP Fingerprint: F919 3919 FF12 ED5A 2801 DEA6 AA77 57A4 EDD8 979B Skype: misch42