[DRBD-user] Best replication link - 10Gbit ethernet, Infiniband, Dolphin

Felix Frank ff at mpexnet.de
Mon Jan 2 12:36:05 CET 2012

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


On 12/27/2011 06:01 PM, Arnold Krille wrote:
> There are some attempts in audio to reduce that latency and make it constant 
> but the rfcs for that are still emerging and switches supporting it are about 
> three times the price as without.

Of course, you wouldn't try and do low-latency disk replication through
a switched network (i.e., unless your switches can indeed reduce latency
compared to a back-to-back connection. Which would be frickin amazing).
Still, as far as I know (from heresay), ethernet *will* introduce
latency above what Infiniband or Dolphin can achieve, switched or not.

Cheers,
Felix



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