Questions tagged [ups]

uninterruptible power supply

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0answers
20 views

NUT loses communications with the UPS

I am using NUT to monitor my UPS. I have a APC Back-UPS ES 550G, and the NUT server runs on a Raspberry Pi. I use the usbhid-ups driver, which works fine most of the time. However, after a few hours ...
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0answers
22 views

Newbie to Supermicro redundant PSU

Until recently I have never had a redundant PSU or a rack server for that matter. So, I think maybe I did this wrong? I have a Supermicro FatTwin 6026TT-HDTRF (CSE-827HD-R1400B case) that comes with a ...
2
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2answers
535 views

ZFS - enable or disable disk cache?

I'm setting up ZFS (through FreeNAS) with RAIDZ1 on a server with 4 x WD Red SATA HDDs (connected through a PERC H330 in HBA mode). The server is hooked to a UPS. For ZFS and in this setup, does it ...
2
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1answer
311 views

How can I fix my UPS repeatedly disconnecting and reconnecting?

I'm running a nut server connected to a Tripp Lite SMART1500LCD by USB. The device is behaving unexpectedly and I can see these kernel messages: user@host:~ $ dmesg -T [Wed Dec 4 13:24:24 2019] usb ...
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1answer
70 views

Is there a UPS like devices to prevent circuit breaks during short periods of high load?

For example, let's say I have a 10 amp circuit. Under normal load the hardware only draws 6 amps. However, it is possible that the hardware could draw up to 11 amps (for instance during boot). Is ...
1
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1answer
124 views

Shutdown Multiple Servers From One APC USB Port - Power loss event

I've got one Ubuntu box and a Synology NAS. Both are connected to the APC UPS, but only one USB, which is connected to the Ubuntu box. How, specifically, can I get both machines to shut down from a ...
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2answers
53 views

APC Smart-UPS 3000 turning off but passing own test

I have APC Smart-UPS 3000 at home which I got hand and apparently when the power goes down it just shuts down instead of switching to backup. Based on how it behaves I have reasons to believe is not ...
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0answers
41 views

Server Rack, Power Strips and UPS

I would like to get rid of all the messy power cords behind our server racks by using short power cords (1's and 2's) with multiple power strips connecting to two different UPSs on separated circuits. ...
1
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3answers
1k views

APC Smart-UPS turning off by itself?

I have an APC Smart-UPS 3000. Last Sunday, it turned off by itself. Noone was in the office and noone was logged in at the time it happened. What could cause this ? I'm concerned it may happen again....
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0answers
31 views

When turned on, LEDs panel in an UPS uses which power at first?

I've been given an UPS (Makelsan ups 800av) and intend to use it for networks backup power supply. There is a question I wonder all then. Googling couldn't help it. I just want to be know whether ...
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1answer
76 views

Starting servers after UPS shutdown when input power is restored

I have a rather simple UPS (Powerwalker VI series) that does not seem to have any sophisticated built-in configuration options. When the power is cut and servers detecting that event shut down after a ...
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0answers
153 views

Hyper-V Core Server 2019 ignoring power plan thresholds

I am attempting to tweak Hyper-V Core Server 2019 (host) power thresholds, however my attempts have failed so far. Scenario The newly created Hyper-V 2019 Server (part of Workgroup, not yet a Domain)...
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1answer
27 views

Save virtual memory in event of a power outage?

I believe my understanding of ram is that it holds the state of all programs for fast recall. On a short term basis. So my question is. Can you have a uninterruptible power supply that would send a ...
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1answer
60 views

Uninterruptable power supply with digital output designating mains/battery state

I want to have some equipment connected to a UPS to shut down gracefully when mains is cut. This equipment does not have capability to read serial or USB, so software solutions are out. What I'm ...
0
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2answers
121 views

UPS for HP ProLiant DL180 G6

I inherited HP ProLiant DL180 G6 model supposed TB used for some additional (non mission-critical) work and need to buy the UPS for it. I've read that PSUs for HP servers tolerate pretty much only the ...
2
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0answers
65 views

Configure server to start on power restore

I have a UPS which is configured to shut down my server when power goes off, and turn off the UPS a minute after. The server is an industrial pc Advantech ARK-2151. It has 2 BIOS options for Restore ...
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1answer
83 views

Redundant power solution in datacenter rack

We have two racks in a datacenter, currently powered by two independent sources. All devices are distributed across four different power extenders, and a few critical ones are first connected to a UPS ...
0
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1answer
2k views

MacOS nut client install for synology network ups

I have an APC UPS connected to my synology nas and I am trying to get my mac (10.13) to connect to the 'network ups' of synology. So far I've been trying to follow this guide: https://community....
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1answer
19 views

On boot, server pulls full load of both PSUs — any way to limit this or mitigate load spike?

I have a giant 24u server (Supermicro 4U X9DRI-F w/ 2x Xeon E5-2680) with 2 1200w PSUs. However, I only have 4 drives in right now, and my actual power draw (under the most stressful loads) is likely ...
48
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6answers
16k views

What are the pros and cons of having your own UPS attached to your own server hosted in a data center?

According to this comment by Tom O'Connor (slightly edited below): You can seriously tick off a datacentre by putting an UPS inside your own rack. What are the risks to the data center should a ...
12
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1answer
192 views

datacenter UPS electronics/chassis expected lifetime

We have a small datacenter with seven APC 5000VA rackmount UPS. These have had regular battery replacement, but have just passed 10 years of service. We also have a boxed spare unit of the same model ...
0
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1answer
38 views

UPS + Bypass for a Server with Dual Power Adapter

We have a 600W APC UPS and a Server with two power adapters (each 800W). Originally, both power adapters were connected to the UPS, and the UPS connected to the power grid. Unfortunately the room ...
2
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1answer
2k views

Is it possible to use powerline adapters behind UPS's? [closed]

Currently i have my router connected in the 1st floor (with some switches), which is also connected with a 1200Mbps (real bandwith is about 600Mbps) powerline adapter. Another powerline adapter is in ...
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2answers
222 views

APC UPS replace battery illuminates [closed]

I have an APC SmartUPS 1000 for my servers. It was good for over 2 years, its capacity is always 5/5. One day I saw a red light illuminated. I searched for the reference it is either "Replace" ...
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1answer
62 views

What is the ideal Windows Update / backup device for a LAN with a slow metered internet connection

I was just in Kenya for several weeks helping some wildlife conservation orgs with their computers and IT. The biggest issue (aside from not enough funds to update tech as often as they should) is ...
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0answers
44 views

Is it impossible to accurately measure the health of a Lead-Acid UPS?

In a blog post from Schneider Electric (parent company of APC, the UPS manufacturer), they say that lead-acid UPS batteries "rely on chemistry that makes it hard to accurately predict when they’re ...
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0answers
79 views

apcupsd commok event fires where there was no commfailure

I have an openSUSE Tumbleweed host connected by USB to an APC Back-UPS NS1080G. For the most part everything works fine and apcupsd keeps track of the status. But lately every few weeks it fires the ...
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0answers
416 views

Socomec UPS no longer powers on after power failure

Some time ago I was bought a Socomec NETYS PR RT 1700 and a B2200 extender as payment for a job, intending to use it for a project that fell through sometime later. I started at a new job as IT ...
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1answer
136 views

How to find the battery type on a server UPS Socomec Mastery BC

I am in a situation where I have to change the UPS batteries of a Server and I cannot even find the type of the batteries that are compatible. Here is what I have tried until now: I have found the ...
2
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1answer
108 views

Consumer grade UPS – safely provide more outlets/extensions for wall warts?

I am helping a small business redo their networking, and one of the items I recommended was an APC BR1500MS. Their setup would be Wall outlet (standard "home" outlet) -> UPS -> UPS Battery backes ...
2
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1answer
647 views

Should you occasionally discharge UPS to higher degree?

We're occasionally experiencing some short outages (few minutes at most or even seconds) so batteries in UPS almost never get below 90-80%. Is it advised to sometimes (eg. once half a year) perform ...
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3answers
135 views

Electricity outage killed 4 out of 6 UPS

We recently had an electricity outage of 1-2 seconds at one of our buildings. In this building we have 6 UPS and 4 of them died while/after the electricity outage and all the servers were powered off. ...
3
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1answer
478 views

UPS inside server room?

In my company we are considering to move our servers (some are mounted on 25U rack and some are tower servers) to a newly created room (underground, no windows) that contains 40 KVa UPS and redundant ...
2
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1answer
3k views

Can't get upsmon service started to monitor (and respond to) remote UPS

I am having difficulty getting my nut install to simply monitor a single remote UPS attached to a Buffalo LinkStation Duo. I can manually correctly read its status using upsc ups@buffalo.local and it ...
1
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0answers
707 views

Network UPS Tools (NUT) causing UPS to Reboot?

I have NUT upsmon 2.7.2 installed on an OrangePi One running Armbian 5.25 (which is Debian jessie). It is setup to monitor my Tripp Lite SmartOnline SU3000RTXLCS2U using the usbhid-ups driver and ...
1
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1answer
96 views

Connect Intelligent Power Manager with EATON EDX2000H and WebPower SNMP Card II

We have an EATON EDX2000H, a WebPower SNMP Card II and I have just installed Intelligent Power Manager. I cannot make IPM to see the UPS as power source. It is greyed out (img 1). IPM sees the UPS ...
0
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1answer
316 views

GE Digital Energy UPS Monitor for Windows

I have a few GE Digital Energy Match Series UPS that beeps and shutdown seconds after startup and before output power is supplied. The batteries are at full capacity. So I searched a number of sites ...
17
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6answers
4k views

Is it safe to use a UPS designed for desktop PCs to power a server?

I am working on a server within my office. The server will eventually be relocated to a data center. I would like to be able to leave the server switched on in my office, which means I would like to ...
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1answer
69 views

Halt, not power down, a windows server

A client recently changed their UPS and now claims that their server is not coming back up after am extended power outage. They have tested their system and it will keep the last state, so if the ...
2
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1answer
346 views

How do I pick a UPS for a graphics rendering machine?

This is a SuperMicro station very heavy on video processing, with 4 hard disks and a 26" monitor. It has two AMD Firepro graphic cards and two 1400W Supermicro reduntant PSUs. I understand the actual ...
0
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0answers
413 views

nut ups master and slave across different networks

I have set up a NUT master and slave and they work great when on the same LAN. Does anyone know if it possible to set them up across different networks? I can't find any reference to this anywhere ...
2
votes
2answers
418 views

Estimate power and cooling for server room

We are trying to determine the right power and cooling for a new server room which would be about 350 sq ft., our power is 220V. We are initially only planning to start with a single rack with ...
0
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1answer
101 views

Can you exceed power rating on a UPS with additional battery packs

After reporting the wattage of a remote site that doesn't have a UPS to my boss he cc'd me on the quote for what he was going to order. The site's networking and server equipment are using over 2,000 ...
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0answers
978 views

HP UPS T1500 G3 intermittent buck switching

We have a HP T1500 G3 UPS which we noticed does several short switches to battery quite often during the day, every day. Nothing ever gets reported to its log (i.e. HP Power Protector Notifications), ...
3
votes
1answer
50 views

Can I power 2x6 socket surge protected PDUs from a surge protected UPS?

I've got a local network rack with: 24 port switch 2x voip dect bases 2x modems 1x load balancing router 1x wifi access point 1x 2bay Synology nas At the moment these are all powered via 2x 1U 6 ...
2
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2answers
539 views

What is the difference between the “Write” and “Write+” modes on an APC SNMP card?

I'm configuring a UPS to be controllable via SNMP and have come across to options: Write mode Write+ mode I've tested both settings and only Write+ works for me so it's what I'll have to use. I'm ...
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1answer
173 views

Power consumption PDU

As you can see in the image below, I can't get the consumption. Even if I send the log via FTP there's no info about the consumption. I already checked on APC PDU website and co and i didn't found ...
12
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4answers
3k views

How to configure UPS to restart servers in the right sequence?

Here we have some servers and almost each of them has a dedicated UPS. There are dependencies between them so they must be switched on in the correct sequence. Ultimately we are experiencing serious ...
0
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1answer
235 views

MGE UPS Switched PDU

I have an old MGE Switched PDU unit. The one described in this manual: http://www.manualslib.com/manual/102923/Mge-Ups-Systems-Switched-Pdu.html I didn't use it in years and couldn't remember the ...
96
votes
2answers
23k views

Smell of rotten eggs in the server room

A week ago I got the following error on my APC Smart-UPS 1000 which I muted. Warning State: Connect battery Load: 55% Batt: 100% Today, I could smell a sort of sulfur/sulphur/rotten egg smell when I ...

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