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Cake day: June 10th, 2023

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  • There isn’t a standard that is broadly-adopted, but NUT (https://networkupstools.org/) has reverse-engineered drivers for nearly every UPS out there, usually each brand has their standard so as long as the brand is supported it will work. (NUT is also what TrueNAS, Synology, QNAP, etc use internally for their UPS support)

    I’ve had good luck with using NUT with APC UPSes (both consumer models and buying used enterprise rack-mount models).

    One cool thing you can do with NUT is share the UPS state over the network, so that multiple machines can respond to the power state instead of just the machine that is plugged in via USB directly.


  • Yeah after doing a bunch of testing what I settled on was a used ThinkCentre Tiny with a dual 10G NIC running OpenWRT, and then a cheap Chinese PoE switch with 4x2.5G ports and 2x10G SFP+ ports. Router and my main computer on 10G, NAS and Wi-Fi (UniFi AP that I’ve had since before) on 2.5G, and then everything else is on a separate 1G switch.

    For a home network, 2.5G LAN is really the sweet spot. The hardware is affordable now, the spinny drives in my NAS can’t realistically do more than 200 MB/s for a real workload, there are no single-stream downloads online that are going to be faster (the fastest “normal” download I’ve seen is 2Gbit from Microsoft)





  • When I was following Synology communities closer, the common wisdom was that the expansion units weren’t great in either performance, stability or cost, and you were better off buying a new, bigger unit and then selling your old one used to recoup the cost difference.

    I’m also in the same position, I have a DS918+ that is full. It’s also 6 years old and probably on the tail end of getting software updates so I’m weighing my choices…



  • The really janky ones you get with like USB gadgets like fans only have the 2 power lines hooked up and not the lines needed to communicate PD support, those will work exactly the same as the same janky USB A-microUSB cables they used to come with, supplying 5V/2A. You throw those away the second you get them and replace them with the decent quality cables you bought in bulk from AmazonBasics or something.



  • kalleboo@lemmy.worldtoTechnology@lemmy.worldAll the other brands went along
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    9 days ago

    I mean even Apple hasn’t released a laptop without a 3.5mm headphone jack, going back to the Macintosh Portable in 1989†. Even the 2017 MacBook 12 inch that only had a single USB-C port still had a headphone jack.

    1/4th>3.5mm

    Oh wow you need a dongle? Why don’t laptops include 1/4th jacks, there were perfectly fine, industry keeps changing things

    †edit: looks like the PowerBook Duo subnotebook series between 1992-1997 also lacked headphone jacks






  • Here are some results if anyone comes across this thread in the future.

    The baseline result I need to achieve is a speedtest result of 7.5 Gbit that the ISP’s rental router gives me.

    I ended up picking up:

    • Lenovo ThinkCentre Tiny M720q, Core i3 8100T, 8 GB RAM ($70)
    • Huawei SP310 (Intel X520-DA2/82599) dual 10 Gbit NIC ($20)
    • 16x PCIe riser + Network Card Bracket ($20)

    Initially I installed pfSense. I ran iperf3 to just get an initial sanity check that the PCIe card/wiring was working right but was getting results between 3-7 Gbit with the CPU pegging at 50%. Some quick googling returned results like “you can’t run iperf on pfSense!” and “pfSense isn’t a router, why do people keep using it as a router, it’s a firewall!”, so I decided to switch to OpenWRT since the Linux side of things always seems to make more sense.

    On OpenWRT, iperf easily hit 9 Gbit with like the CPU at 95% idle.

    It took like 2 hours to configure the weird IPIP6 tunnel my ISP uses for IPv4, but once it was set up, the machine has no trouble routing the same 7.5 Gbit speedtest the ISP router managed, with the CPU usage at 78% idle (the remainder in “sirq”)

    Power consumption:

    • ISP router draws a solid 16W both when it’s idle and when there is 7.5 Gbit of traffic
    • The M720q draws 16W when idle and up to 29W when there is 7.5Gbit of traffic. This is with two copper SFP+
    • This is without tweaking any power saving options in BIOS etc





  • The low power consumption is one of the reasons I was attracted to the ThinkCenter M720q devices. It definitely wouldn’t be worth it if I had to build some tower PC or run a Xeon server!

    The ISP router I’m getting is 10 Gbit (on WAN and one LAN port, the rest are 1 Gbit), but the configuration seems limited and it’s a $5/mo rental tacked onto the bill.

    I think I can live without IDS/IPS, in all the time I used it on UniFi, it never gave me any actionable info, so hopefully that helps me with performance.

    That’s interesting about the 10Gbit ethernet cards. Is that with something like a Mellanox or some other card? My NAS is going to be stuck on 2.5 Gbit since it’s just a Synology.