uninterruptible power supply

learn more… | top users | synonyms

-1
votes
0answers
20 views

double powerfailure : UPS down

I have 2 racks, the first rack is powered by 2 UPS's of 3kvA, and the second rack is powered by 1 UPS of 3kvA. During normal operations these UPS are never above 75% load. We had a blackout today and ...
16
votes
4answers
1k views

Can Running a Server's Redundant PSU on Different Circuits Damage It?

So I've been tasked to document and review the status of the UPSes for my current employer and identify any changes that need to be made. Generally easy stuff, however I came across a few units that ...
0
votes
0answers
8 views

Limiting server power current usage (amps) possibly by UPS

I have a current limit of 1A, which one server idles far below (around 750 mA). But when the server reaches full load, meaning both CPU and RAM are at about 90% or more, the server sometimes peaks ...
9
votes
4answers
153 views

UPS Requirements - Max load or actual load?

One of our UPS units failed this weekend (Happy new year!), and so I'm on the look out to replace it. I've done the calculations for our power requirements, and it comes out just under 8000W. This is ...
3
votes
1answer
30 views

PowerChute vMA server shuts down ESXi host after boot

I've ran into a critical problem first time installing and configuring a UPS connected to a server. Whenever I boot up the vMA server, ESXi starts shutting down all the VM's and then itself. It's ...
10
votes
3answers
184 views

New UPS Batteries Dying in Months

This is something that has had me stumped for over a year. I have 3 APC SmartUPS 3000's and a few non APC units in my server room. Each unit has it's own dedicated connection to the breaker panel. ...
0
votes
1answer
44 views

UPS requirements for server

I have a DL380 Gen9 server, and I would like to get a UPS for it so that when power outage happens, the server will be up at least for a minute. The server has two PSU, each 500W. I actually got a UPS ...
1
vote
1answer
130 views

APC UPS -> Windows SNMP

We have an APC UPS. I want a Windows 2012 R2 server to shutdown on a power breakdown (and the remaining power lasts for e.g. 15 minutes). Therefore the UPS should send a message to all servers via ...
0
votes
0answers
28 views

HP UPS Network Module

We have installed a HP UPS with Network module. The UPS is set to shutdown after 2 hrs or 10% power. The Power Protector on the Servers is set to shutdown afte 1:45 with 5 minutes OS shutdown. When ...
3
votes
0answers
61 views

Server not start in low battery (Network UPS Tools)

I have server (Centos 6.5 + nut-2.6.5 + Powercom BNT-600AP USB) everything works well, UPS picks up problems with electricity. When no electricity more than 10 minutes UPS shutdown the server, and ...
1
vote
2answers
267 views

APC Smart-UPS 5000VA maximum time

I planning to put a server on this ups (Europe, 230V): http://www.apc.com/resource/include/techspec_index.cfm?base_sku=SUA5000RMI5U&ISOCountryCode=gb My server has a relatively new energy saving ...
1
vote
2answers
239 views

UPS systems in parallel for redundancy and/or capacity, generator as backup, ATS,

I am about to upgrade our server room's power plan and would kindly ask you for your help with a proper, optimal design / advice on "good practice" approach. Please note that our business is small, ...
0
votes
0answers
149 views

Nut says APC UPS is on battery. It is not

Since 2 days my Smart-UPS 1500 RM reports it is on battery but this is clearly not the case since it's been running for more than two days indicating 100% battery with 01:30:00 running time. Batteries ...
0
votes
2answers
87 views

Should each 48U have their own UPS?

Yesterday, the network of Linode over at HE.net has suffered a major outage -- supposedly, he.net has had "one out of eight" of their power generators fail, which, apparently, has one way or another ...
1
vote
0answers
37 views

How to automatically bring servers up if AC returns before the fail process completes?

I have the following processes in place for an AC power loss: UPS emails an "On battery" message UPS sends a power loss shutdown event to the host OS (hyper-V server 2012 R2) Host OS sends SNMP ...
1
vote
2answers
85 views

160KVA 3 phase UPS can take 222Amps load

If I say that my 160KVA 3 phase UPS can take 222Amps load, does it mean per phase or total load? If it is per phase, can I load 222Amps single phase load on each phase i.e a total load of 666Amps?
1
vote
2answers
504 views

How do I setup a server to send emails after starting (i.e. not meaning as an email server)?

Windows Server 2012 R2 w/ GUI, UPS system I am setting up my first server. It is a Hyper-V host that will host multiple VM servers. The system is on a UPS. When the UPS detects an AC power ...
0
votes
1answer
43 views

“Turbo-timer” for safely shutting down after powerout [closed]

We have clients that apparently routinely kill the power to our running windows 7 platform without performing a shutdown. We have had a couple of (SSD) drive failures that we suspect are caused by ...
-1
votes
1answer
71 views

How to calculate draw power from specs for a UPS [closed]

We recently installed some new blade servers and we have 'overloaded' our current UPS (APC Smart UPS 3000). We bought an identical UPS to balance out the load, however, we did not have another 30 Amp ...
0
votes
2answers
259 views

Cyberpower UPS usage with a Linux arm based sytem

I have a UPS (Cyberpower CP900EPFCLCD) which I would like to connect to an arm based server via USB. Unfortunately, Cyberpower doesn't provide a daemon for arm based platforms at the moment. Is there ...
0
votes
0answers
24 views

Why does apcupsd not run commfailure when the usb is disconnected?

I've just setup a UPS on debian, and one of the tests the manual (http://www.apcupsd.com/manual/manual.html#windows-systems) recommends is a communications test. When I pull the USB cable out of the ...
1
vote
0answers
66 views

PowerChute with ESX - how to start the VMs

I have a setup with a couple of ESX servers and two APC UPS. The ESX servers are govern by vCenter and I've deployed vMA (provided by VMWare VM) on one of the ESX hosts and configure it to target both ...
1
vote
1answer
208 views

Is it safe to use PoE injector for routers that do not support PoE

We bought an Asus router n66U to be installed in a tourist bus along with a server. The bus has a inverter to supply a 220V AC. However, there can be abrupt power fluctuations specially during ...
-1
votes
1answer
70 views

How to choose the right rack and UPS?

I have two configurations: 10 Dell PE R720 servers, 2 Dell EqualLogic PS6100S arrays, 4 Dell N3000 Switches, 1 N4000 switch 20 Dell PE R820, 1 Dell EqualLogic PS6100S arrays, 2 Dell N3000 Switches, ...
2
votes
2answers
582 views

How do I condition power between a generator and a UPS?

How do I condition power between a generator that does not produce a clean sine wave and a UPS to such a standard that the UPS will accept the power? I have tried running through a power conditioner, ...
1
vote
1answer
93 views

High peak power demands in datacenter; lower costs? [closed]

Short version A UPS seems to have only two modes: Supply all power from the input feed Supply all power from the internal batteries (when the input feed is gone) Can a UPS also be used to balance ...
1
vote
1answer
461 views

NUT UPS-Dummy driver in repeater mode for Synology NAS

I have a NUT client that requires the UPS it monitors to be named ups. The client (a Synology NAS) does not provide a method to change this configuration. My setup consists of multiple UPSes monitored ...
5
votes
2answers
183 views

Cancel / block a task triggered with delay by windows “task scheduler”

This is related to a specific issue, but I think it is an "interesting" question for general use: In Windows (specifically 2k8 server, for me) you have a task that is triggered by an event ...
2
votes
1answer
1k views

How to disable UPS energy_saving with NUT?

I've got a Proline 650 UPS (Serial) installed Extra details: The UPS has a serial connection with a single 12v SLA battery. (It was not listed in the NUT compatibility list but after compiling ...
1
vote
5answers
919 views

FreeBSD determine if reboot was due to power loss

We are running FreeNAS (which is built on FreeBSD) to run our data storage systems. It is running on an APC Smart-UPS 750VA X. On a couple of occasions, I have been alerted to the fact that the ...
2
votes
1answer
249 views

After UPS battery replacement (HP R/T 3000)

has any one had experience with this UPS? i have replaced the batteries but have't ran self test yet, if i run self test is there a risk of powering down the machines the UPS powers? just wondering ...
-3
votes
1answer
134 views

Establishing monitoring on nine Dell UPS that do not have management cards

Goal - Establish monitoring on nine Dell UPS that do not have management cards. • Dell UPS 1000W x 8 • Dell UPS 3750W x 1 Is it possible to daisy chain the USB or Serial (RS-232) ports on Dell ...
0
votes
1answer
2k views

apcupsd vs NUT in Proxmox environment

I have a Proxmox node which is actually is HP Proliant DL 320e G8 server + APC SmartUPS 750 connected directly to the server by usb cable. On the host are running several Linux VMs. My question is - ...
2
votes
2answers
464 views

UPS - serial or parallel

I've two UPSs. I'm going to connect two devices to them and the combined wattage of the devices is below the rating for each single UPS. Would it be better* to connect the UPS device in serial with ...
1
vote
1answer
102 views

Script before shutdown with network on

I need to generate a SMS / Email alert when the server´s UPS is finishing its charge. We have a car battery connected to the motherboard that works as a UPS ...
4
votes
2answers
4k views

Automatic power on after graceful shutdown on UPS

This is my basic setup: I run a server (DL380 G7; linux 3.13 kernel) that is host to ~10 virtual machines It is set for automatic power on I use NUT for UPS management Graceful shutdown duration of ...
0
votes
1answer
91 views

APC SC450RM1U EPO port

I'm looking to get a couple of the APC SC450RM1U UPS's, and within the specifications APC states that EPO is 'Optional' on this UPS. I've had a look through the documentation, and it doesn't describe ...
0
votes
1answer
3k views

How do I assign an IP address to a Dell UPS 2700w network interface card?

We have just installed a NIC into our Dell UPS 2700w and I can't find a way of configuring the card with a static IP address so that we can then access it over our network. We have installed the ...
12
votes
5answers
1k views

Is there any value in protecting both rack power feeds with their own UPS?

I've done some looking and have not found a satisfactory answer to this question. When is it necessary or suggested to use an independent UPS (on it's own mains branch circuit) for each power feed to ...
1
vote
2answers
2k views

Shut down Windows Server on power failure without vendor-specific third-party software

Let's say I have a Windows Server 2012 R2 server with a UPS attached. Is there a generic way to make Windows Server 2012 R2 shut down when power fails, i.e., the system switches to battery power? I ...
2
votes
1answer
1k views

UPS Batteries different capacity

I'm trying to get a replacement battery for a Cyberpower UPS model CP425HG. The original battery is 12v, 3.6Ah. However, there are not identical batteries in my area, only 12v, 1.2 amp hour batteries ...
13
votes
6answers
5k views

Can I plug a 15A UPS into a 30A receptacle?

I know that typically electronics draw only as much current as they need. Is this the case with UPSs? I have a 120 volt, 30 amp circuit, and am replacing the UPS plugged into that circuit with a lower ...
1
vote
2answers
85 views

Is it safe to locate a UPS close to server

I have an Eaton 5S and a HP Microserver. I'm wondering if there's likely to be any problems stacking the former on of the latter (aside from stability). Do I need to be aware of any electrical ...
11
votes
1answer
598 views

Daisy Chaining UPS Power Cable

I have a rackmount UPS. The UPS has a 6ft long 12AWG thick power cable that powers it from one of the server room's 20A wall plugs. The current orientation of the cabinets is not ideal. All but this ...
0
votes
1answer
493 views

APC PowerChute management

I have 3 server with their Smart-UPS connected by USB cable. I downloaded PowerChute B.E. to manage ups. If I well understand PowerChute usage, I have to install an agent for each server and on unique ...
-3
votes
1answer
2k views

Is a Virtualbox FreeNAS VM reliable (with a UPS)? [closed]

I started looking at - Is FreeNAS reliable? I would have taken issue with TV10's comment : "longer than a UPS would handle it" (but I don't yet have a rating high enough to do so). I am running a ...
3
votes
1answer
96 views

Order of connections between UPSs and PDUs

Half of the equipment on my server cabinet (data servers, networking) are critical and need to be backed up by UPS's, while the other half of it is non-critical (high-load simulations that only take ...
0
votes
0answers
530 views

Dell MUMC: How to shut down servers if any one of two UPSes loses power?

We have here two Dell R720 running ESXi (managed with vCenter). Each is connected to the same PowerVault MD3660i storage array. However the two servers are powered by different UPSes. One UPS (UPS1) ...
2
votes
2answers
1k views

How to administer an APC Smart UPS 6000?

I did a scan on a APC Smart UPS 6000 that is connected to the network, and it was discovered with a particular mac address and 62078 and 999 closed ports. I tried using telnet to login to the ...
3
votes
1answer
298 views

What is the interruption time of an offline UPS system?

I am trying to figure out what the maximal interruption for an offline/standby uninterruptible power supply (UPS) would be. According to wikipedia: "The switchover time can be as long as 25 ...