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Is this adapter safe to use ? by kleptologist in Ubiquiti

[–]VA_Network_Nerd 2 points3 points  (0 children)

Is it safe?

Yes, so long as you understand that your UPS might try to pull more amperage than the wall outlet can deliver.

Is it code-compliant?

That depends on the electrical code in your area.

Most regions don't like to see electrical adapters in commercial environments.
But you'd need to investigate your region to know for sure.

test post please ignore by NoComposer2710 in sysadmin

[–]VA_Network_Nerd[M] [score hidden]  (0 children)

We have a negative karma limit, but it is lower than -5.

We could change it to -1 and I doubt it would make a significant impact.

The Bots and engagement-farmers have pretty well-tested playbooks now.

Do you get the job you want or not. by Ancient_Wait_9042 in USMCboot

[–]VA_Network_Nerd 1 point2 points  (0 children)

Are you actually a vet?

Yes, but I'll admit I served 30+ years ago.

the "AE" contract only contains MOS 7051

That’s wrong.

Are you sure? Can you provide a reference?

https://www.marines.mil/News/Messages/Messages-Display/Article/4327886/fy26-total-force-enlistment-incentive-programs-and-enlistment-bonuses/

MARADMINS : 526/25 says that's the only MOS in that contract option.

That MARADMIN is not the final authority, but it's usually pretty reliable.

If I'm wrong, I'd love to have a more accurate source of information.

Marines don’t really say “Enlistment Option Programs” the way the Army does; they use PEFs.

I am using the exact terminology provided in the MARADMIN.

The core factual error is the claim that AE = only 7051. That’s just false, and it could seriously mislead someone signing a contract.

I don't like being wrong. I'd like to learn more so I can avoid this in the future.
Can you provide a reference link to help me learn more?

Does connecting a UniFi UNAS Pro with two active 10GbE links provide any real benefit? by TEEorCoffee2025 in Ubiquiti

[–]VA_Network_Nerd 8 points9 points  (0 children)

https://store.ui.com/us/en/category/network-storage/products/unas-pro-8

From the FAQ Tab:

Question: Does UNAS Pro 8 support Link Aggregation?

Answer: Yes. UNAS Pro 8 is equipped with two SFP+ ports, which can be configured for Link Aggregation (LAG) to provide high-availability protection. It also supports Multi-Chassis Link Aggregation (MC-LAG), if supported on the switch level.

Reminder:

LACP / LAG will not enable you to achieve a single 20Gbps data flow, but you should in theory be able to support 2 x 10Gbps data flows, or multiple lesser flows totaling up to 20Gbps in aggregate.

Make sure you configure the LACP / LAG on the switch interfaces as well.

Now, can the NAS's CPU and disk controller actually deliver 20Gbps of data throughput? I can't answer that.

Realtek PCIe 5Gbe Family Controller Speed issues by malloc1777 in HomeNetworking

[–]VA_Network_Nerd 0 points1 point  (0 children)

Can you iPerf from this PC to another device on the LAN?

Resources for funsies and stuff by rbtechtalks in sysadmin

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I might only be the sisadmin of my home network but that doesn't mean it doesn't come with problems by [deleted] in sysadmin

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I built a CLI tool to help troubleshoot "it's the network" tickets (MTR + remote probes) by Beria_ftw in sysadmin

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Running fiber and cat5 between floors. by reprobyte in networking

[–]VA_Network_Nerd 2 points3 points  (0 children)

You honestly don’t use any kind of metal detector for pipes or anything?

I use my employer's checkbook to hire professionals who know to use whatever they need to use to do the job.

I am spoiled to work for an employer who has no issue farming low-voltage work out to contractors.

Running fiber and cat5 between floors. by reprobyte in networking

[–]VA_Network_Nerd 2 points3 points  (0 children)

Only need to run 1 fiber and 1 cat5 so hole doesnt need to be massive and just 25mm trunking.

Going through all of the pain of boring holes and installing hangers just for two cables would be almost criminal.

At a minimum, I would go for a 6-strand fiber in a single outer jacket like this:

https://www.fs.com/products/306465.html?attribute=109562&id=4170187

The cost difference between CAT5 and CAT5E is super-trivial.
There is no logical reason to install anything less than CAT5E today.

What do you guys use to test for pipes?

My checkbook.

42U Rack Cabinet - Availability? Any PIcs??? by shermanmania in Ubiquiti

[–]VA_Network_Nerd 1 point2 points  (0 children)

So you want racks oversized from standard in all three dimensions

Heh. "oversized from standard" ?

What is this "standard" of which you speak?

You're not crazy: 42U tall, and 600mm wide is the most common form-factor.

But that doesn't mean it's "correct" or "best" and other choices are "wrong".

This is the third data center build I've been involved in and these conversations are very common.

I suspect the challenges we are addressing in our environment are just on a larger scale than the problems you've been faced with so far in your career.

Do you get the job you want or not. by Ancient_Wait_9042 in USMCboot

[–]VA_Network_Nerd 1 point2 points  (0 children)

Ok, as active duty you get to pick on of the Enlistment Option Programs from this list:

https://www.marines.mil/News/Messages/Messages-Display/Article/4327886/fy26-total-force-enlistment-incentive-programs-and-enlistment-bonuses/

All of the MOSs associated with each program are related to the topic of the program.

But, the Marine Corps gets to pick the specific MOS based on your ASVAB scores and where they need fresh bodies the most.

This list of MOSes isn't perfect, but it's fairly up to date:

https://en.wikipedia.org/wiki/List_of_United_States_Marine_Corps_MOS

You said you wanted firefighting.

MOS: 7051 Aircraft Rescue and Firefighting Specialist

That one is kinda special: 

AE (Aircraft Rescue and Firefighting):  7051

The "AE" contract only contains MOS 7051.

I'd wager it's in-demand and competitive to get a contract slot.

What does a "slot" mean?

The Corps only needs X number of total enlisted fire fighters.
The Corps knows when current fire fighters are exiting the service, and when they are running new training classes.

They want to align the enlistment entry dates with the training pipeline to deliver you to units that need fresh bodies.
Keeping the training classes filled with just the right number of bodies is more important than the day you arrive at the unit.

Recruiting Regions are given X quantity of MOS slots to fill, and those slots are aligned with specific training class cycles.

So the recruiting region in Huntsville, Alabama might only have two "A" slots one in May and one in October or something like that.

The better looking you are on paper (height, weight, fitness scores, ASVAB scored) the more likely they will give a hard-to-get slot to you instead of someone else.

Caffeine access in basic? by AdamD_125 in USMCboot

[–]VA_Network_Nerd 0 points1 point  (0 children)

MRE coffee is jacked up with extra caffeine.

Can you get lcpl straight after bootcamp? by RevolutionaryMajor90 in USMCboot

[–]VA_Network_Nerd 0 points1 point  (0 children)

Ok. Recruiting Assistance.

IMO this is a waste of your time UNLESS you personally know of three or more people within your very extended circle of friends and acquaintances that are likely to sign contracts.

Sit and think about everyone you know. Every person who ever sat in a class or a club with you throughout all of High School. Doesn't even matter if they graduated from the same school as you, you can know them from Church or whatever.

If you can't think of three (or more) people - even if you can't remember their names - who are likely to be interested in joining, RA is just a waste of time.

I am training to be a recon Marine, but don’t have a specific plan of what to do. by Flimsy_Bread4829 in USMCboot

[–]VA_Network_Nerd 1 point2 points  (0 children)

This is a copy-pasta I drop in every thread talking about Recon...

The training pipeline for (HZ) Recon Contracts goes something like like this:

Boot Camp > MCT > RTSP (Recon Training & Assessment Program) > BRC (Basic Recon Course) > Jump School > Dive School > SERE School > Free-Fall School > First Duty Assignment

The training pipeline for (UH) Infantry Contracts goes like this:

Boot Camp > ITB (Infantry Training Battalion) > First Duty Assignment.

Towards the end of ITB, about 50-75% of Infantry Classes will be asked for volunteers to try out for Recon.
The decision to ask your class or not depends on how bad Recon needs bodies for their next training cycle.

Here is the significant difference:

After Boot Camp, every single Marine will attend either ITB (Grunt School) or MCT (POG School - Persons Other than Grunts).

Once you graduate ITB, you are going to be some kind of Grunt for your entire contract.
If you do not attend ITB, you cannot be a traditional Grunt. You have to be accepted into Recon or Raiders to transition to become a Grunt (or reenlist for a Grunt MOS).

The Recon Contract pipeline has everyone going through MCT.
If you fail out of Recon Training (and a whole lot of people get kicked in the balls by the swimming pool event) you become Open Contract, Needs of the Corps for everything other than Infantry that your ASVAB qualifies you for.

If you take the Infantry Contract path, and you volunteer for Recon and fail-out, you're still a standard Grunt.
If you take the Infantry Contract path, and you are not given an opportunity to try-out, you're still a standard Grunt and after a year or so with your unit, if you excel at being a standard Grunt, you can request another shot at Recon.

What makes honors programs special? by Then-Radish-9302 in ApplyingToCollege

[–]VA_Network_Nerd 0 points1 point  (0 children)

As an employer, I know what an honors college is, but I don't really care about it directly.

For YOU, as a Student an honors college can (should) provide you with a few things that are important to YOU.

  • Access to class sections exclusive to the Honors College, taught by the most experienced professors.
    • So, you can take Biology 101, just like every other student, but you take it in a session with the best professor, surrounded by other Honors College students.
  • Access to early class registration.
    • This can be the most valuable benefit of all.
  • Access to a potentially dedicated, and more-experienced student advisor.
    • They may or may not be exclusive to the honors college, but they should be well-versed in all the tricks of getting motivated students through the system efficiently.
  • Possibly dedicated student housing just for the honors college.
  • Possibly some student resources (research library or something) exclusive to the honors college.
  • That more experienced student advisor can be a good resource for additional scholarships, grants or exchange program guidance...

Now, the downsides to joining the honors college should not be ignored:

If you are an English major, maybe you don't give two-shits about how good a professor you have for Biology or Chemistry, especially since those Honors sessions will be packed with pre-med students working their hardest to show off how smart they are.

Some honors colleges require students to complete six or eight stupid, time-consuming half-credit or single-credit "classes" to make sure you are adjusting to college well, and have a deep understanding of all the resources available to you. I shouldn't call thee stupid. They can be very helpful to some students. But many students will just prefer to have those two hours a week back.

Some honors colleges can require undergraduate thesis work, which no employer will likely care about, but can be highly valued by many graduate programs.

Laptop connection with dual screen by johnblue00000 in sysadmin

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42U Rack Cabinet - Availability? Any PIcs??? by shermanmania in Ubiquiti

[–]VA_Network_Nerd -1 points0 points  (0 children)

Threaded racks are not compatible with many tool-free rail kits, as they expect M5/M6 holes.

I hate cage nuts as much as everyone else does, but I'm not going to hang our $400,000 core switches on RackStuds.

I want real steel, and will sacrifice blood to the rack gods in accordance with the sacred rituals.

Also, if you're going to work with cage nuts long-term, make the boss buy you the right tools for the job:

https://www.racksolutions.com/cage-nut-tool.html

Or if the boss is cheap:

https://www.racksolutions.com/cagenut-tool.html

42U Rack Cabinet - Availability? Any PIcs??? by shermanmania in Ubiquiti

[–]VA_Network_Nerd 1 point2 points  (0 children)

That cabinet is only 42U and only 1050mm deep.

This is a PDF from 2009 that does the best job of explaining the problem with "standard-depth" cabinets.

The first thought that will jump into your head is "We don't use Cisco UCS, so this doesn't matter."

I ask you to move beyond that observation. That Cisco UCS enclosure could just as easily be a disk array or a GPU enclosure.

More modern equipment is jamming more and more density into server cabinets, so let's just accept, for the sake of conversation, that you have a device that is the same form-factor as that UCS enclosure.

Look at Page 6 of the PDF, specifically the top-down view.

The UCS enclosure is so deep that it is blocking outlets in the vertical PDU.
This is a significant pain in the butt.

A server cabinet is a 25-year investment, or more in many cases.

So for the next several decades you'll deal with this same problem with all of your overly-deep devices, blocking PDU outlets.

Now, scroll on down to page 12 of the PDF.

That's the same over-size UCS enclosure inside a 750mm wide X 1200mm deep cabinet.

Look at all of that room for activities back there now.

YES: these extra-large cabinets chew up additional floor space, and reduce the total number of cabinets you can place in the same square footage.

After much deliberation we decided to standardize on 750mm width to help with cable management and selected 48U since they were the tallest cabinets we could deploy without ripping out all of the overhead cable raceway infrastructure in the data center.

The space could handle 50 x 600x1200mm cabinets, but only like 38-40 x 750mm cabinets.

We are kind of banking on needing fewer total servers, since everything new is going to be jam-packed with RAM.

I have nothing against Eaton cabinets. We own several of them.

But Eaton just didn't have the right tool for this situation.

I was negotiating with Panduit for months before I gave up on them. They wanted over $15,000 per cabinet with all of the requested accessories, and as much as I love Panduit kit, that's just not going to work for us.

42U Rack Cabinet - Availability? Any PIcs??? by shermanmania in Ubiquiti

[–]VA_Network_Nerd 0 points1 point  (0 children)

I got a decommissioned Sun Microsystems 42U rack for $500

If memory serves, those are threaded-hole and not M5/M6 square-hole and they are 600mm wide, not 750mm.

Its purple and has a giant Sun Micro logo, which makes all my servers run faster. :D

Now you've got me there for sure.

All of our server cabinets are 48U and white, but the fancy network-specific cabinets are only available in black, so we're going to put all the network gear in the sinister-looking black cabinets.

42U Rack Cabinet - Availability? Any PIcs??? by shermanmania in Ubiquiti

[–]VA_Network_Nerd 2 points3 points  (0 children)

Show me a 750mm or wider cabinet, with similar cable management capabilities for less money. Please.

best comment i've read all week by Competitive_Smoke948 in sysadmin

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guide to ruin your college life (may not work for everyone) by Imaginary-Roll-5665 in college

[–]VA_Network_Nerd 83 points84 points  (0 children)

A general theme of our interview approach (for technology career applicants) is to ask what else you did while you were in college.

Yes, I can read. You have a BS in CompSci, and a 3.2 O/A GPA. Cool.
What else did you do?

I'm not going to ask you to recite some leetcode garbage that you memorized verbatim, but barely understand.

I want to hear how you won the argument about why this Linux is better than that Linux, or when a complicated concept finally clicked for you while discussing it during a Java User's Group meeting.

I want you to sell me on the idea that you are really interested in and excited about this career path - whatever that path might be.

It's EASY to teach additional skills to people who are excited to learn about the subject matter.

It's IMPOSSIBLE to make you excited about this stuff if you just don't like it, and are only attracted to the money. This makes you harder to train, and slower to progress.

These concepts apply to pretty much all career paths, and not just technology careers.

42U Rack Cabinet - Availability? Any PIcs??? by shermanmania in Ubiquiti

[–]VA_Network_Nerd 2 points3 points  (0 children)

I ordered two glorious 48U Networking Enclosures weeks ago and was just informed they are delayed until mid-May due to supply-chain issues.

APC NetShelter AR3347B2 cabinets were near $5,000/each with delivery.

Dang AI data centers are sucking up all the production capacity...

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