Sysadmin Mega Thread

Operating Systems & Open Source
4665

mkisofs from cdrtools.

mkisofs -J -o my.iso path/to/files

3 Likes
4666

I’ve looked at Eaton UPS but only through Amazon and their voltages are all wrong (120v vs 220v here).

I will try to look for other stores. Maybe they have someting usable here.

@anon75264233 is that a good thing or a bad thing (or just a thing)?

@mutation666 The full version has ISO making capabilities as well as the capability to do raw copies, IIRC. This is for Windows, right?

4667

yeah I could do linux too if needed I run both depending on what it is but my daily desktop is windows

4668

You could use WSL and use the GNU tools to take care of that.

Exactly.

1 Like
4669

Yeah, Amazon search is almost completely broken, and has been for the past few years. Eaton definitely has 230V / C13 models. Amazon sells them, too. But good luck finding them.

1 Like
4670

Europeans might know but Hey guys I need a 240V 50 hz equivalent that’s well built and supports SSL to this:

Any ideas?

It must be COTS so there is minimal NRE

2 Likes
4671

Started new job today as a Windows SysAdmin at an Army hospital.

9 Likes
4673

Do you have one of those 120v Pro Switches? Not sure I have a use for it, but looks interesting.

1 Like
4674

Im using it on a work thing. I need remote controlled power thats toggled via web with a somewhat clean interface and it must be COTS so no NRE. Figured some data center jockies here might know

Its going to have a weeee little netgate 1100 for a switch+firewall for the two devices hiding out in the remote box. Mainly because pfsense is easy and reliable for me and I dont want to fuck with it. The budget for the switch was <2 benjies so I wanted a reliable all in one device for that with wireguard and/or tailscale support

4675

Sounds like you want a switched network PDU. Commonly found in data centers.

Like this one:

You can find any variation you may want, browsing UPS manufacturer’s websites:

1 Like
4676

Thanks dude. Looking for small but ill check around. Eaton is a great brand

It doesn’t need to be big. In fact it needs to be small. Its mostly going to have low power arm devices and an ARM switch+firewall. I mean the UPS on this will be a small 700VA

4677

Is it a better practice to buy 1 UPS for each device (consumer server and desktop) or is it better to buy just 1 UPS and plug in all the devices to it?

4678

Best practice is all your devices having dual power inputs, and running those inputs alternately from two UPS units, each of which can power everything.

Otherwise, one UPS powering as much of your equipment as reasonably practical is the way to go. A UPS with very little load (like a single device) will be very inefficient, and smaller capacity UPS units are often cheap junk.

At some point you run into the limits of standard power outlets, or want two to avoid single-points-of-failure, so if one dies when you really need it, you can move critical load over to the survivor.

2 Likes
4679

This just for a homelab, nothing that needs critical uptime. I’m just protecting the components within because of frequent power fluctuation and sometimes the in-law decides to do welding jobs out of the nkue and all our stuff would be running.

I have 650W PSU for the homeserver that only has a few HDDs and an Intel 12100 running on Eco mode in the BIOS. So it shouldnt pull a lot of power.

The other connected device would be the desktop with an 850W PSU running a Radeon 7900XT and 5600X CPU.

Plus other assorted network devices (switch, low power router, fiber modem, wireless AP, etc).

A single 1500VA UPS should do the job well enough, right?

4680

FYI 1500VA is 900W

4681

I think I should step back a bit and maybe actually measure the amount of wattage the whole setup pulls.

Kill-a-watt it is then


This is spec of the UPS in question:

Vertiv Liebert GXT5-1500IRT2UXL

8ee04d3a923c6f163295048ac0ee7894.jpg_720x720q80.jpg_
8ee04d3a923c6f163295048ac0ee7894.jpg_720x720q80.jpg_720×720 34.4 KB

  • AC Surge Joule Rating: 150 J
  • Ratings (VA/W): 1500 VA / 1500 W
  • Dimensions (mm) Unit, D×W×H: 470×430×85
  • Rated Volatge: 230 VAC
  • Rated Frequency: 50 Hz / 60 Hz
  • Frequency Range: 40 to 70 Hz
  • Power Factor: ≄0.99
  • Input Power Cord: C14
  • Nominal Voltage: 200/208/220/230/240 VAC
  • Waveform: Sine wave
  • Inverter Overload Capability: >200% minimum 250 ms, 150 to 200% for 2 seconds; 125 to 150% for 50 seconds; 105 to 125% for 60 seconds
  • Efficiency in Online Mode: Up to 93%
  • Output Receptacles: (8) EN60320/C13
  • Rated Voltage: 36 Vdc
  • Charger Current: Nominal 2.2 A; Maximum 8 A
  • Type: Valve-regulated, non-spillable, lead acid
  • Qty x V x Rating: 4 x 12 V x 9.0 Ah
  • End Cell Voltage: 1.67 V/cell (discharge voltage per cell will be from 1.67 Vdc to 1.90 Vdc, canbe selected by PARAMSET)
  • Floating Voltage: Equalize charge: 2.35 V/cell; Float charge: 2.27 V/cell
  • Battery Voltage Range: 40 Vdc to 56.4 Vdc
  • Operating Temperature: °C: Full power up to 40 ÂșC (up to 50 ÂșC with derating)
  • Storage Temperature: °C: 20 to 60 ( contain batteries will be from -15 to 40 °C.)
  • Relative Humidity: 0 to 95% non-condensing
  • Operating Elevation: Up to 3,000 m at 25°C without derating
  • What’s in the box: 1x Vertiv Liebert GXT5-1500IRT2UXL UPS, 1x Output Cable, Quick Start Guide/User Manual, Monitoring/Shutdown Software(downloadable), USB Cable, Plastic Tower Stand 2 Sets (4pcs), Rack-mount Bracket, Fixed Mounting Rails, Terminal Block Communication, Safety Warning Sheet or Regulations, 1x Australia type A to SAA Input Cord, 1x BS1363 (UK) to IEC C13 Input Cable, 2x IE-C-320-C13 C14 Output Cable
  • Warranty: 3 Years

This is about 1,250 USD. There is a 2000VA/2000W variant that goes for about 1,500 USD
 Should I get the larger one?

I see significantly cheaper alternatives but I feel like power related components shouldnt be cheaped out on because fire.

4682

This is seems expensive, but maybe that’s regional. Looks like 1500W CyberPower units currently range from $600-$900 USD on Amazon (in the US).

Last time I bought one it was around $400. The first one I ever bought is now in its 10th year of service with original battery.

1 Like
4683

Could be regional. UPS are a pain to ship due to the absurd weight and I am in the middle of nowhere in a distant far off island.

I dont know if you factored the crazy inflation prices we have right now. I dont know how much that will actually affect pricing. I agree that the price isnt so sane.

Another worry I have is the compatibility. Does anyone have any difficulty in getting the UPS to send a shutdown command to the server. It is my first time to do this.

Another alternative is to just get a 3000W automatic voltage regulator with line filter. I dont really need uptime and an AVR can significantly cut the cost to just above 100USD while keeping my devices relatively safe.

4684

This is the unit i run ($309.95 in 2019, not its like $460 :frowning: )

4685

double conversion :+1: expensive but me likey

will be good for PQ

the cheaper ones are line interactive and wont be good