Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Wednesday 13 June 2012 09:26:45 Felix Frank wrote: > On 06/12/2012 08:23 PM, Dennis Jacobfeuerborn wrote: > >> Don't use crossover cables.. In my experience use crossover cables for > >> two > >> > >> > node cluster make only problems... use a simple switch.. > > > > Why would a setup with 2 cables and a switch be more reliable than just a > > single cable? That doesn't make sense. > > Uhm, I don't think that was Eduardo was suggesting. > > Someone on this list (Digimer?) has made a good point some time about > switches allowing for better forensics in case of link problems (i.e., > the switch can help you identify the side with a faulty NIC/cable). > > On the other hand, a switch introduces one more (two really, counting > the extra required cable) possible point of replication failure. I've > never had negative experiences with back-to-back connections either. A switch also has input- and output-buffers introducing another step of latency. We would use a direct link-cable if that scaled for more then 2 servers. (We actually though about just adding more network-cards, connect three servers with three cables directly and use bridges with (r)stp for the storage ring. But now we will just use the additional cards for more redundancy to have trunked connections to two switches...) Have fun, Arnold -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part. URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20120613/16bf0070/attachment.pgp>