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Comment Re:Reccomended (Score 1) 24

The basics are pretty easy to guide someone through, but the maintaining and dealing with tuning what traffic can go to trusted networks gets pretty complicated (especially with IPv6, at least for me). I have a few lazy cop-outs (HomeAssistant server has two interfaces (IoT and LAN) rather than being in its own VLAN with traffic rules to address specific ports and applications. (At one point I had a server VLAN that it sat in, but it has different needs than Influx or the PiHole or the NAS.)

Proper security requires vigilance and that is much harder to train.

Comment IoT SSID (Score 5, Informative) 24

Needs to be easier for end users to create IoT VLANs with default restrictions. I am getting to the point where I want to segment my IoT VLAN into different trust zones. Unfortunately there is some crap that has to sit in the "Guest" VLAN (which doesn't address the concern in TFS), but mostly I try to eliminate such products.

Comment Re:Wait, what? (Score 1) 105

Dual conversion and line interactive UPSs can handle a wider range of input voltage, but have higher losses compared to offline UPS designs which still offer a 12-16ms transfer time. The secondary problem is re-connection from on-site generators which can still be staggered in smaller blocks if designed well.

Comment Re:Flywheel storage buffer (Score 1) 105

The GP post is pretty far off the mark in therms of reality, but the issue is switching a >100MW load off and later on instantly. That has a very real impact on the grid. Smart system design can let a data center ramp up and down grid load vs on-site storage/generation, but not everything uses this approach as it is more expensive.

I did work for an industrial facility many years back that needed to ramp their 35MW primary load-- the idea that they could fully unload it and restore it within a few minutes was explicitly forbidden in their interconnection agreement. Not sure why utilities are not using those tools to penalize customers that damage the grid. The stupid shit they require of residential solar interconnection is more onerous.

Comment Re:Why is public transit so abysmal? (Score 1) 42

I remember walking 5-6 miles home at 2AM in college a couple times. 2-3 Miles was more common, but was staying at a friend's place. Wouldn't want to do it today, but I have almost had to walk home 5 miles from dinner at a restaurant last year when there was some odd service interruption for the busses. Fortunately an Uber eventually came, as there is no sidewalk, little light, and in some spots just a very narrow shoulder before a cliff.

Comment Re:Fiber to all homes is too unrealistic ... (Score 1) 123

Because if POTS is a system of last resort for 1% of the population then it is going to cost >$150/month and provide essentially nothing. I'm advocating fiber (specifically PON) personally rather than POTS as it is practical to get to a similar level of reliability as long as the CPE have integrated batteries sufficient to make it work.

Cable cannot do that, and even a full cell site would struggle to match reliability.

If the Telcos are forced to maintain POTS it will be done like DSL-- fiber backhaul and an ONT serving one or more customers from a pedestal.

Comment Re:Fiber to all homes is too unrealistic ... (Score 1) 123

Personally I would stipulate fiber not just wired. The communication equipment needs at least a 24-hour backup, and that doesn't happen with cable amplifiers or microcell sites. At the home end, you need at least 500Wh backup for the customer premise equipment to do the same. Maybe the telco can demonstrate 99.999% based on actual utility data and backup provisions, but that should be the design threshold.

Comment Likely inevitable (Score 1) 14

Dominion is going to need to add nuclear capacity in the next 15-20 years and having a larger demand base and cash reserves makes that practical. Adding renewables doesn't have that scale requirement though. I just wonder how they will try to structure utility rates to pay for capacity commitments.

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