10GB doesn't cost too much for the NIC's but the switch side costs can
be megabucks. (although not necessarily such a big pricetag if you can
using Infiniband instead of 10GB ethernet).
Trunking multiple 1GB's is possible with sol10 if you have the right
type of sun NICs and your switch can have etherchannels configured...
(even with cisco, there are lots of conditions. Eg: firmware bugs, asic
limitations etc).
Multiple 1GB NICs at full load need multiple CPUs to keep up with the
traffic, and you have to be careful about the total PCI bus bandwidth -
you can probably run 2 NICs at full speed, but any more and a 440 might
not be the server for the job.
Using a couple of 1GB NICs and just using round-robin DNS to spread the
load actually works much better than one might expect, and that's what
I'm stuck with doing currently, I set up all the clients with a special
storage node hostname and there are multiple A records for that
hostname in DNS (this can't be done using NIS hosts map however).
> -----Original Message-----
> From: EMC NetWorker discussion
> [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On Behalf Of Steve Groom
> Sent: Thursday, 31 January 2008 1:38 PM
> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> Subject: [Networker] dividing backup traffic over multiple
> network interfaces
>
> I'm looking for some advice on adding network
> bandwidth to a Networker server.
> We are presently moving to configuration using
> LTO-3 tapes fronted by fast disk staging area,
> a big advancement from our previous configuration.
> We are now able to easily saturate the 1Gb enet
> interface on this backup server, so my attention
> is now shifting to this new bottleneck.
>
> The system is a Sun V440 running Solaris 10.
> We are using the Sun-branded "Enterprise Backup"
> flavor of Networker, v7.3.2 I believe.
>
> The basic ideas I'm considering are
>
> 1) using multiple 1Gb enet at the server,
> and somehow spread the load among them
>
> 2) trunking multiple 1Gb enets
>
> 3) looking into 10Gb enet ($$!)
>
> For idea (1), can anyone suggest techniques or
> solutions for how I might easily
> spread (static partition or auto-balance) the client
> load across multiple server interfaces?
>
> thanks in advance for any suggestions or pointers.
>
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