Questions tagged [battery]

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APC Smart-UPS with two battery sets: Regular switches or not?

I have a Smart-UPS 1500RM in a remote location with two battery packs. In order to maximize the lifetime of the battery packs, is it better to Use one pack until it dies and then hope that the other ...
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  • 538
-1 votes
1 answer
152 views

Unattended Shutdown for Smart-UPS on Windows Server 2012

We will have two smart APC ups. Each server is a VMware server with dual power supplies. How would I configure it so that the VMware server does an unattended safe shutdown only when the ups are both ...
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1 vote
0 answers
367 views

Removing low Battery Indicator in Ubuntu 20.04

I have recently installed Ubuntu on a mini pc with a zx8350 cpu. The installation recognizes the CPU as a laptop CPU and automatically displays the "low battery" indicator even though the ...
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5 votes
1 answer
719 views

RAID supercapacitor only card (to replace BBU maintenance free) [closed]

An excellent article here: https://www.servethehome.com/raid-controller-batteries-time-bombs-you-need-to-replace/ Are RAID controller lithium-ion batteries ticking time bombs within your server? Over ...
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0 votes
0 answers
785 views

Can Smart Storage Battery disable access to server?

I have a Proliant DL360 Gen9 server that I have to restart every 5-7 days because I loose access to VMware and to all virtual machines. By this, I mean that I cannot SSH to the virtual machines or ...
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  • 101
0 votes
2 answers
437 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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  • 7,508
-2 votes
2 answers
288 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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  • 117
-2 votes
1 answer
182 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 ...
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1 vote
0 answers
38 views

System failure after changing cache battery on IBM power5 machine

As the title states, I got a used IBM power5 9405-series machine, and after changing the cache battery, the system refuses to boot up. I only see a blank screen on the console. What could be the ...
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1 vote
1 answer
405 views

Rackable Systems S5000PSL does not boot: 3 beeps, no post

I have 6 Rackable Systems 1u servers, each with 2x4GB PC2 5300. 3 of them would boot and POST successfully, and the other 3 would not POST. Instead, these three would beep 3 times, indicating a ...
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99 votes
2 answers
25k 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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  • 1,273
1 vote
1 answer
137 views

APC SMX3000 Smart-UPS Battery has never been cycled. Is it still good?

I've recently inherited an APC SMX3000 Smart-UPS. The UPS has never been used. Is the battery still good? The battery is plugged in, but the UPS reports "No Batteries".
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  • 111
11 votes
3 answers
4k 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. ...
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3 votes
0 answers
123 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 ...
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0 votes
3 answers
645 views

Dell PowerEdge 2900 rom Batt

I have a Dell PowerEdge 2900. I got the the Raid Controller battery warning that it had less than 24 hrs left on it. I replaced it with a new battery. However, after a week, the orange light at the ...
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2 votes
1 answer
843 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 ...
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2 votes
1 answer
4k 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 ...
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  • 33
-1 votes
1 answer
475 views

How to replace NVRAM battery in BlueArc storage?

The RAID/NVRAM battery on a BlueArc Mercury storage host is located in the front of the storage head, and can be replaced without down time. From what I can gather, after battery change, I have to ...
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1 vote
0 answers
1k views

apcupsd not working properly on centos 5

I have APC UPS and my servers are directly connected to it using power cable. I want to use network link to shutdown servers when ups goes on batter. the following is my config file. ## apcupsd.conf ...
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14 votes
3 answers
33k views

Hardware RAID controller cache battery failure frequency/lifetime?

I'm in an environment that contains many Supermicro servers equipped with Adaptec and LSI MegaRAID hardware RAID controllers. These controllers contain battery-backed cache modules to help boost write ...
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  • 194k
-2 votes
2 answers
328 views

Running long time off a battery [closed]

I don't know if this question is suitable for ServerFault, but here it's anyway. I brought what's called power-inverter connected it to a battery charger to test how many amps my computer uses, so I ...
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  • 101
-1 votes
1 answer
1k views

Could the Input/Output or some other difference between adapters/chargers cause this? [closed]

I have a laptop and my adapter/charger could not be used anymore as the cable was cut. So I bought a new adapter but it was slightly different than the original. My original had (Toshiba's original): ...
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  • 349
0 votes
1 answer
748 views

LSI 2208 9286-8e MegaRAID controller beeping when connected to 24-bay NexentaSTOR JBOD enclosure

I am getting beeping from the LSI external RAID controller even if I properly shutdown and there is no array re-initialization. Would I be required to use a battery back (BBU) with the LSI controller ...
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  • 879
6 votes
1 answer
27k views

Smart Array P400 - Accelerator Replacement Battery Failure

TL;DR - Is the immediate failure of a replacement battery, for a failed battery, on a battery backed accelerator for a Smart Array P400 controller a common occurrence? Or are we likely to have an ...
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3 votes
4 answers
302 views

Data consistency with RAID 5 and BBWC

I have a few questions about RAID 5, BBWC (Battery Backed Write Cache), filesystem (ext3) and optionally mysql. I have a hypothesis and I ask Server Fault community to validate or not this one: The ...
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  • 33
0 votes
2 answers
15k views

Increasing occurrence of "BBU disabled" messages

Until recent my Intel RAID controller (SROMBSASMR) had a monthly occurrence of "BBU disabled: changing WB logical drives to WT", followed about 2 1/2 hours later by "Battery relearn complete". Since ...
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15 votes
4 answers
53k views

Change the UPS battery while it's powered on?

Is it dangerous or not advisable to change the UPS battery while it is plugged in? We have an APC Smart-UPS 1500 and we need to replace its battery. I have the new battery but the UPS powers a few ...
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  • 577
6 votes
2 answers
8k views

Non-volatile cache RAID controllers: what kind of protection is there against NVCACHE failure?

The battery back-up (BBU) model: admin enables write-back cache with BBU writes are cached to the RAID controller's RAM (major performance benefit) the battery saves uncommitted and cached data in ...
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  • 690
1 vote
4 answers
5k views

HP Smart Array P400/256MB SAS Controller BATTERY

This is probably a dumb question. I recently purchased a couple of refurbished HP SB40C storage blade for our HP Bladesystem c3000 enclosure. Each comes with an HP Smart Array P400/256MB SAS ...
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  • 294
1 vote
2 answers
2k views

Gracefully Shutdown an Equalogic SAN

Like many others I have jumped on the VMware bandwagon. We are hosting all of our data on an Equalogic SAN and need a "gracefull" way to shut down the VMs and the SAN if the battery backups reach a ...
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  • 605
-2 votes
2 answers
143 views

server offline for battery swap? [closed]

I'm a HostGator customer, and they frequently post notices that such-and-such server will be momentarily offline for a "battery swap". What exactly are they swapping? I assume it can't be the CMOS ...
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  • 661
-1 votes
1 answer
110 views

Is there a software solution to plug off the laptop? [closed]

Is it possible to plug off the laptop by a command from the laptop, rather than by removing the adapter from power source? I am on Windows Seven, but I will also welcome any note regarding the ...
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  • 99
5 votes
3 answers
17k views

Dell Perc 5/i battery replacement - how long until it registers as good?

So I replaced the battery for my Dell Perc 5/i controller since the machine had an error code that it needed to be replaced. I ordered the battery directly from dell based on the service code and ...
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1 vote
5 answers
11k views

Dell PowerEdge 1950 RAID Battery - what kind?

What kind of battery do I need for a Dell PowerEdge 1950 RAID? I am seeing an error code W1228 on the front which means <24 hours for the RAID battery. Per the Dell manual it says I need to ...
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0 votes
2 answers
124 views

ups to give few minutes for about 20 PCs and 10 Printers

We've a problem in the electricity current for three months right now, I was tasked to get the best solution, and it should be cost effective also, for allowing our application users to save and ...
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0 votes
2 answers
91 views

Optimise httpd/mysql for battery life

this is a bit of a weird one. Basically, I'm going to be on a 12 hour flight soon, and I'd like to know if I could tune Apache2 and MySQL 5.1 to use less CPU/RAM and thus less energy so I can ...
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  • 222
0 votes
2 answers
469 views

Battery backup for Workstation & Printer

I have been tasked with finding a price for a battery backup solution for our printers. Each printer is listed at 240v 24a <5.5kW and each workstation is using a 500w power supply. We are ...
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  • 3,160
10 votes
4 answers
28k views

What purpose does the battery serve on a battery-backed caching RAID controller if the server is on an uninterruptible power supply?

Is the battery redundant if the server is on a properly-sized UPS? There is an option to force write-back mode and I want to understand the risk. It is my understanding that it helps against power ...
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  • 101
2 votes
3 answers
3k views

How can I tell if my hard drive(s) have Battery Backed Write Cache?

How can I tell if my hard drives have a battery backed write cache (BBWC)? How can I tell if it is enabled and/or configured correctly? I don't have physical access to my server. It's a GNU/Linux ...
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  • 273
1 vote
3 answers
897 views

how do I properly measure capacity of a UPS battery?

How can I properly measure the capacity of a UPS battery? Unplugging it from the wall is a bad idea since it loses the ground, so how can this be done?
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3 votes
3 answers
589 views

Buying a Refurbished UPS?

I have a 10 year old APC Smart-UPS XL with battery pack, and need new batteries. Looks like I'll be spending $500-700 in batteries. While shopping around, I noticed a few places selling refurbished ...
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  • 4,928
3 votes
4 answers
13k views

Dell Perc 6/i Raid Controller Battery Missing

I noticed when I installed the Dell OpenManage that the battery on my Raid controller is missing. Is this something that is critical? What does the battery do?
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5 votes
3 answers
734 views

Considerations when buying a UPS Replacement Battery

According to a couple of my Smart UPS 3000s (Model DLA3000RM2U), it is time to replace the battery. Other than making sure I get the right battery for the particular model, are there any other things ...
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7 votes
9 answers
3k views

Off-brand laptop batteries?

I tend to err on the side of paying too much for quality stuff, but $180 for a standard replacement battery for a Dell laptop makes the $80 knockoffs look pretty tempting. I wouldn't consider it (...
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  • 7,892
3 votes
3 answers
18k views

Should you discharge a Li-ion battery all the way?

Should you discharge a Li-ion battery all the way before plugging it in? Is it especially pertinent when you get a new battery / laptop? Should you keep draining it all the time, or leave it plugged ...
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17 votes
14 answers
60k views

What is the lifespan of an typical UPS battery?

When using a uninterruptible power supply how long does it preserve the original capacity? Say I buy a UPS that holds the necessary load for 10 minutes - I don't want it to unexpectedly come into ...
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  • 2,727
21 votes
7 answers
2k views

Am I damaging my battery by never using it?

I have a MacBook Pro that stays plugged in for weeks or months at a time. Am I damaging my battery by not using it? I know you should cycle it monthly to recalibrate it...is that good enough? Should ...
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1 vote
4 answers
889 views

Is there a way to find out a computer's BIOS password for the Hard drive? [closed]

I have a computer that a password appeared for the Hard drive, I have a Toshiba Satellite Pro, Model No. M15-S405. I called customer service and they want me to drive 200 miles so they can flash the ...
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  • 191
10 votes
4 answers
47k views

How to recover the strength of a laptop battery? [closed]

I got a laptop, which I brought a year ago, which has a battery that can last for 3 hours. 6 months ago, the battery's life dropped down to roughly 15 minutes (Windows says its supposed to last for ...
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