[Gluster-users] Switch recommendations

Peter Linder peter.linder at fiberdirekt.se
Fri Jan 27 13:16:36 UTC 2012

You could get a cisco switch that supports cut through instead of 
store-and-forward, for lower latency.

Other than that, compare the port to port forwarding times and see if 
there is a difference between the switches you are looking at (probably 
not) and make your decision based on that. Consider connecting 
everything to two switches, for failover in case a switch breaks?

On 1/27/2012 2:04 PM, Dan Bretherton wrote:
> Dear All,
> I need to buy a bigger GigE switch for my GlusterFS cluster and I am 
> trying to decide whether or not a much more expensive one would be 
> justified.  I have limited experience with networking so I don't know 
> if it would be appropriate to spend £500, £1500 or £3500 for a 48-port 
> switch.  Those rough costs are based on a comparison of 3 Dell 
> Powerconnect switches: the 5548 (bigger version of what we have now), 
> the 6248 and the 7048.  The servers in the cluster are nothing special 
> - mostly Supermicro with SATA drives and 1GigE network adapters.  I 
> can only justify spending more than ~£500 if I can be sure that users 
> would notice the difference.  Some of the users' applications do lots 
> of small reads and writes, and they do run much more slowly if all the 
> servers are not connected to the same switch, as is the case now while 
> I don't have a big enough switch.  Any advice or comments would be 
> much appreciated.
> Regards
> Dan.
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