Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Thursday 13 May 2010 17:09:24 Michael Schwartzkopff wrote: > 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, > Mmm, we plan to use just 10K drives and not even that many in one RAID 5. So no way the NICs are going to be saturated I guess. Thx! Bart