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Best practice? Allocating NICs

Source: microsoft.public.virtualserver
Sent: 05/16/2008
From: "Dave Harry" <(email address - cut out)group>
Message:

Ok, here's a question for the panel.
I've got two gigabit NICS in my DL360 G3 server. There's no space to drop
any more in (except maybe via USB1.1).

Initially I had one for the host and one for a VM.
I added a second VM and allocated it to the first NIC that also supplied the
host.
I would like add a third in the near future.

That worked fine until I installed the full HP support pack, which caused
the NIC to fail in the guest as "already allocated".

So what's the best way?
- keep one for host and one for ALL guests
- dump the host altogether (would prefer not to)
- rip the support pack out and let it reuse the first NIC

What do you guys do, who have half a dozen VM?

--
Dave Harry

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Related Messages

RE: Best practice? Allocating NICs

Sent: 05/16/2008
From: Jesper Arnecke
Message:

"Dave Harry" wrote:

Hey Dave,

We run DL380 G5 servers with teamed 1GB NIC, failover. The team is then
created as a virtual network, where each guest connects to.
We run about 8-12 guests on each host with this setup..

Kind Regards
Jesper

Show quoted text

> Ok, here's a question for the panel.
> I've got two gigabit NICS in my DL360 G3 server. There's no space to drop
> any more in (except maybe via USB1.1).
>
> Initially I had one for the host and one for a VM.
> I added a second VM and allocated it to the first NIC that also supplied the
> host.
> I would like add a third in the near future.
>
> That worked fine until I installed the full HP support pack, which caused
> the NIC to fail in the guest as "already allocated".
>
> So what's the best way?
> - keep one for host and one for ALL guests
> - dump the host altogether (would prefer not to)
> - rip the support pack out and let it reuse the first NIC
>
> What do you guys do, who have half a dozen VM?
>
> --
> Dave Harry

Re: Best practice? Allocating NICs

Sent: 05/19/2008
From: "Dave Harry" <(email address - cut out)group>
Message:

> Hey Dave,

Thanks Jesper,
I've just had a quick read up on teamed networking from HP.

If I understand correctly, both the NICs are teamed at the host level, as if
they were a single network adaptor on that host.
The host gets one IP address for the entire team.

Then you create a virtual network adaptor for that team as an external
network.
You put all your guests on the one virtual adaptor, assigning each their own
IP address.

Have I got that right? The sharing aspect sounds good.
Though, I'm not sure my switches are smart enough to deal with two teamed
NICs with the same IP. In that case, might I be better to keep it
distributed across two virtual networks?

--
Dave Harry

Show quoted text

>
> We run DL380 G5 servers with teamed 1GB NIC, failover. The team is then
> created as a virtual network, where each guest connects to.
> We run about 8-12 guests on each host with this setup..
>
> Kind Regards
> Jesper

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