I am building my personal private cloud. I am considering using second hand dell optiplexes as worker nodes, but they only have 1 NIC and I’d need a contraption like this for my redundant network.
Then this wish came to my mind. Theoretically, such a one box solution could be faster than gigabit too.
If you have a bunch of nodes, what do you need redundant NICs for? The other nodes should pick up the slack.
It’s unlikely for the NIC or cable to suddenly go bad. If you only have one switch, you’re not protected against its failure, either.
There are still tons of reasons to have redundant data paths down to the switch level.
At the enterprise level, we assume even the switch can fail. As an additional note, only some smart/managed switches (typically the ones with removable modules and cost in the five to six figures USD per chassis) can run a firmware upgrade without blocking networking traffic.
So from a failure case and switching during an upgrade procedure, you absolutely want two switches if that’s your jam.
On my home system, I actually have four core switches: a Catalyst 3750X stack of two nodes for L3 and 1Gb/s switching, and then all my “fast stuff” is connected to a pair of ES-16-XG, each of which has a port channel of two 10G DACs back to to Catalyst stack, with one leg to each stack member.
To the point about NICs going bad - you’re right its infrequent but can happen, especially with consumer hardware and not enterprise hardware. Also, at the 10G fiber level, though infrequent, you still see SFPs and DACs go bad at a higher rate than NICs
I’m going to go a different route than your question. If you have a spare m.2 slot and room in your PC, you can install a m.2 network adapter. I recently installed a m.2 to 2.5gbe adapters in a Dell 3060 SFF as a proof of concept at home for getting Proxmox ceph cluster working over 2.5gbe.
Oh that’s nice. I have a second m2 slot in my TH80. Putting a stronger network card there could be a cool future upgrade
This is the way to do it for minipcs in my experience. As long as for some reason the box you’re using only allows for a whitelist of wlan cards to be used, but I haven’t run into any that does that yet.
Such an abomination :-)
I cant speak to that brand specifically, but the USB ethernet adapters I have used are super unreliable. I have had 2 burn out randomly (out of 3). So it might not be as redundant as you would like.
I’ve used the tplink ones that they’re using and they’ve been pretty solid. I can’t say how they’d fare in a 24/7 setup though since they’re not really intended for that.
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I’ve seen in this thread:
Fewer Letters More Letters AP WiFi Access Point PCIe Peripheral Component Interconnect Express RAID Redundant Array of Independent Disks for mass storage SSD Solid State Drive mass storage
4 acronyms in this thread; the most compressed thread commented on today has 17 acronyms.
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I have been trying to do bonds with USB adapters and while it usually seems to work fine at first, they just seems to randomly drop out when run 24/7 so I stopped doing that. In theory it seems like a good idea though.
I just have that happen in general with USB NICs. Random drops for seemingly no reason.
They’re not meant for infrastructural use, just as travel adapters.
Nice idea if you actually have the rest of the redundant network, uplink and all that jazz (otherwise you’re wasting time and money).
the reason this won’t ever be a product is because if you’re serious about your redundancy you’re installing extra NICs inside the servers, which are ideally not second-hand. the only people who would be the target market of such a product is just you.
also: do these servers not have pcie slots inside? is there truly no way of adding nics inside?
Get a 10GbE nic and OpenVswitch
If those are gigabit, I think I have that exact adapter. I have never used it in production, but I have not run into any issues using it with a laptop when diagnosing. Theoretically you can connect hosts directly to each other via usb3 ala level one and have really fast through put but I have not even started investigating this.
Adding to this - I have those adapters to, ans fyi they don’t support jumbo frames.
Why do you need a redundant network is basically what I’m wondering? It seems like an odd match up with small consumer boxes.
Why not just use a separate switch and wireless AP for redundancy? Wi-Fi can be your backup if your wired switch goes down. Assuming your Dells have Wi-Fi cards, that is.
Personal Private Cloud then all the money spent on a truly redundant network back-bone is far better spent on just about anything else. Especially if your solution relies on notoriously unrealiable USB nics.
If redundant everything is important then you need to change your planning toward proper rack servers and switches, only way to get a cost effective reliable redundant setup. Use CEPH rather than RAID and ideally, if your workloads are runnable as containers, use a solution that allows you to abstract away the whole server concept as well. Hyper-converged infrastructure is excellent for cost effective setups.
