Hardware :: Silencing A Low-power PC (acting As A Server)
Jan 23, 2010
I have an EPIA M10000N (VIA Nehemiah 1GHz integrated CPU) motherboard (square MB each side 17cm) in a GA610 case. These last two links show the situation quite well.I have neither a CD/DVD drive, nor a floppy drive in the case. Only a hard drive, the motherboard, and the power supply.As you can see in the pictures, the whole thing is cooled by a 4cm fan on the CPU heat sink, and another 4cm fan at the rear of the power supply.This is rather noisy (and unbearable in a living room!).After looking (not that hard, though...) for a solution, I did not find a proper (less than 20dB, and good quality) solution. So the living-room PC became a server. It's either that of throwing it away, anyway. Having nothing to loose, I want to try something. And I'd like to have your opinion, dear reader.I want to:
- remove both 4cm fans,
- remove the cover from the power supply,
- cut a round hole on top of the case,
- fit a 12 or 14cm fan on the lower side of the round hole, right above both the CPU and the power supply.
I'm new to this cooling stuff. I saw that a 4cm fan can extract up to 5 CFM of air, whereas a big fan can extract at least 60 or 70 CFM!Changing two noisy 5 CFM fans with a single silent 60 CFM fan seems OK to me.What do you think of the idea?Next, for better reuse, I may buy a Noctua 14cm NF-S14 FLX. It is big and silent, and 71 to 110 CFM seems a lot! And its fixation holes match those of a standard 12cm fan, thanks to the unusual shape
Do you approve?
I still hesitate a bit because:
- the Noctua NF-P12 1300 might be more sturdy due to its regular shape...
- the Enermax Magma UC-MA12 might be a better choice because it can be washed... on the other hand, because of that, it may get loose with time...
by now I have 10 servers for hpc, power computing oriented. My users need to launch several processes using qmake. The users are used to work with ubuntu 9.10, and the software from the repositories is switable for them. I've deployed ubuntu 9.10 to all 10 servers (pxe rocks). By now we work with parallel-ssh and cluster-ssh, which allows as to launch the same process to all servers. With this tools this tools the servers remain as independent but with the same software and the same launched command. Now we would like to go to next step and see all the servers as a single one with all the resources from the other 9 as if was its resources. The difference would be substantial in time to process and also time to design the command to launch.
I have a DNS server that's been working just fine up until now. I have a local domain, "galapagos.office" set up, with several subdomains on it. I've been able to get to all the subdomains just fine for the last couple weeks from several different machines.Now something weird's happening: I CAN ping wiki.galapagos.office from a local machine I CAN do an nslookup on wiki.galapagos.office from a local machine I CAN see wiki.galapagos.office in a browser from a local machine
I CAN'T ping wiki.galapagos.office from the DNS server itself I CAN'T do an nslookup on wiki.galapagos.office from the DNS server itself I CAN'T see wiki.galapagos.office in a browser from the DNS server itself
And I COULD do all these things before. I don't know exactly when things went south because I almost never do anything from the DNS server itself.
We are running a sendmail(8.13.8-2.el5) service on one of our server running RHEl5 When I try to mail from one of the machines connected to the server on our private network, log file on that machine shows that the mail has been sent and also there is no mail in the queue, but when I check the server, there is no mail received, not even any status on log file. Did anyone experience anything like this or any idea about this problem?
I want to use 2 network cards on a notebook (one internal and one by USB). I don't want the typical "internet sharing", so I want it to act really as a switch:
Other room <== 1Gb/s ==> Notebook <== 100Mb/s ==> network switch with more computers.
I want to do it because i want to use the 1Gb/s link from the other room to the "servers" room, and then the rest of servers will run at 100Mb/s. I wanna all my computers in the same network, like there's no notebook in the middle, so the Notebook will act as a switch (and a server). i wanna (assumming all of this is possible): Code: > [network switch] 1Gb/s
[Administration] comment = Administration path = /home/adm valid users = adm public = no writeable = yes browseable = no
We have two samba users: samba and adm. The first is used to connect to Storage and Backup shares, and adm is used to connect to Administration share. There are two problems:
1) If Storage and Backup shares are connected to a Win7 box, the Administration share cannot be connected. All we get is an error saying that that share is already connected with different username. 2) We have managed to work around this by connecting the Administration share with the IP-address of the server instead of it's name(?!). The problem then becomes that sometimes connecting Administration share this way makes Storage share read-only. Not always though.
Wrong "security" type in smb.conf (was "user", needs to be "share"). For some reason the Storage share still occasionally gets connected read-only. Win7 also tends to forget the passwords/usernames for some shares upon reboot (not all of them, though).
I have been having some odd issues over the last day or so while trying to get a raid 5 array running in software under Kubuntu. I installed 3 1TB drives and started up, my sd* order got all messed up( sda was now sdc and so on). This wasn't entirely unexpected, so I fixed up fstab and booted again. I found all three of the drives I installed, set them to raid auto-detect and used mdadm to create /dev/md0. I then created mdadm.conf by piping the output of mdadm --detail --scan --verbose into /etc/mdadm.conf.At this point, everything was still going swimmingly. I copied over a few hundred GB of data from another failing drive and everything seemed ok. I went to reboot once the copy was done and everything just went weird. All of the sd* drives went back to the original. Of course, this meant that the mdadm.conf was wrong. I tried to just change the device list, but that didn't work. I then deleted mdadm.conf and rebooted. The drive list stayed in the original order this time, so I just tried manually starting the array.
By erasing the partition table of the 3rd drive, I've been able to get it to the status of spare, but it says it is busy when I try to add it to the array. A grep through dmesg makes me think that md has a lock on it. I'm not sure where to go with it now. If anyone has any pointers, I would like to hear them.
So, the NSA puts out some handy documentation on locking down a RHEL server (running centos 5.6 x64 myself) here, [url]. Under "Ensure System is Not Acting as a Network Sniļ¬er" on page 63, it says that if any numbers below the first line in /proc/net/packet, that it is acting as a network sniffer.
I get the following output:
Code:
Unless I've been pwned, I don't know exactly what could be causing this. Besides samba, nmap (compiled from source, not from yum), screen, and rtorrent, there's nothing I've installed beyond the fresh install I did a few days ago. I was not running nmap when looking at /proc/net/packet.
I use Squeeze with Xfce. My problem is that recently (after the xfce updates) the xfce power manager doesnt react to the power button - it is set to suspend. I dont have gnome-power manager or anything like it running. If i reboot the computer, the power button will work but if i suspend and resume, it doesnt work again. The computer is built on an Asus M3N78-VM mobo (2GB RAM/Athlon3200+ single core).
I am using Ubuntu 10.04 64-bit and I purchased a new ALFA AWUS036H wireless card. I would like to know if this "1Watt" wireless card is configured for full power. iwlist wlan0 txpower results:
wlan0 unknown transmit-power information. Current Tx-Power=27 dBm (501 mW). It appears to me that I should be able to increase the power. "iwpriv wlan0 highpower 1" does not work. Do I need to patch the new default driver that comes with Ubuntu 10.04 64-bit with the aircrack one following these directions:[URL]...? Monitor mode and a injection tests seem to work fine with the driver I have installed.
A small combined webserver and fileserver with focus on power consumption and storage size, what would be a cheap and stable solution to this in terms of hardware ? I'm not interested in NAS solution only servers ..
I'm looking for any power monitoring devices for Linux to allow monitoring power quality, voltage changes, and outages. This would be for North American three phase power system. I want to have this data fed live to my own program. It should be something much better than just jury-rigging a circuit to fee the power waveform into 2 or 3 audio cards.
I built this small server for a coworker that by nature of its purpose will get turned off and on often. I want it setup so that he can just press the power button to have it power off normally. Normally I can set that up in Gnome, but in this case I don't want to install a GUI. Is there software that can tie the button and the the poweroff/shutdown cmd together without needing a desktop environment
I had unplugged my PC last night as sometimes there's storms at night this morning I plugged in PC and the power light is blinking and the PC wont come on at all tried different power cord, same result
PC is a AMD athlon64 3300+ 2.4ghz SiS graphics
probably the power-supply or what?
If it is the power supply, how do I find new one as I've never had to replace anything on it or any other PC?
Also, I really need access to the hard drive but it's a weird hard drive and was wondering if I could put that hard drive in my K7 PC, which already has 2 drives in it can a pc have 3 drives? do I have to add/have another ribbon cable for 3rd drive?
The iso file I downloaded passed the md5sum check. However, the cd I burned from it seems to bypass the usual Ubuntu menu where you get to choose what you want to do (run the live cd without changing your computer, check the cd for errors, install, etc) and it attempts to install itself!! The installation process halts when some sort of error is encountered.
Recently I had (and am still having) a lot of trouble with my Fedora 12 installation.First, 3D acceleration and sound stopped working. This was solver by adding my account to the "video" and "audio" groups (I wonder howcome it worked before?).Then, my keyboard stopped working in X. It would work fine in CLI mode, but as soon as I start X not even the Num Lock LED worked! I think I glimpsed that it might be due to a missing keymap or something, but I don't know. I got my computer back by making Xfce's keyboard settings override X, but it still isn't right, and I can't use anything other than Xfce.Recently I tried to burn a CD/DVD but neither Brasero, K3B, nor cdrecord could detect the DVD burner.
If I right-click a file and select VLC, I get immediate playback from VLC. Everything seems fine until I hit Ctrl+O to select another file. It seems to freeze, but it actually just takes a few minutes to get going.So I opened VLC via a terminal, then hit Ctrl+O,
This just started happening, but I haven't logged out or rebooted in a while, so I'm not sure what could be causing this. I have setup some keyboard shortcuts to use the Win modifier key (Mod4, Super, whatever). The keyboard shortcuts utility in KDE list it as the Win key so that is how I will refer to it. Some example shortcuts: Win+t starts a terminal, Win+m toggles windows maximize mode. I had these setup and they were working fine on this install that I've had for about a month, but they stopped working today. I can still use Ctrl, Alt, and Shift as modifier keys and they work fine.
I open the keyboard shortcuts utility in KDE Control Center (kcontrol) and start to set a new keyboard shortcut. i.e. I click on the button to "build" a keyboard shortcut. I can press the Win key and it shows that it detects it, but when I press the 't' key, the shortcut is just set as 't' instead of Win+t. I can also push shift+win and that shows in the builder but when I press the 't' key, the shortcut is now set to 'shift+t', so it seems like the Win key is acting funky.
CentOS version 5.4 KDE version 3.5.4-25.el1.centos.1
I've been running my Dell SC440 as a home server/workstation for about a year now and whilst it can cope with both roles, it is power hungry, loud and does get a little slow down sometimes. What I am looking to do is create a home server to take away the need of it to be on 24x7.My requirements in a home server would include:
- Media Server (using TwonkyMedia or uShare) - NZB Downloader (hellaNZB or sabNZB) - AFP + NFS file serving - rsync/unison for Linux backups and N900 media sync and backup - Email/Calendar/Contacts hosting and sync (zimbra or zarafa?)
I would like to achieve this with an Acer Revo and a couple of 1 or 1.5TB external hard disks, I'm unsure if the Atom processor would be strong enough for all of these services, although I could test it using my netbook, if that can cope, the Revo would be able to easily.
I just got my electricity bill for July & August and noticed a dramatic increase in my consumption. Basically, the amount of electricity has almost doubled (from 433 to 748kWh) and the increase happens mainly between 5pm and 11pm, as well as during weekends... I did not have to search for too long before I pointed out the issue... My new home server. It is configured to auto WOL at 5PM and auto shutdown (Cron) at 11PM. It also runs 24h/day on weekends...
Everything else is only "run-on-demand" or scripts... I am searching for suggestions on how to minimize the power requirements. The video card is going to be replaced soon, by a standard PCI 4MB videocard. Next I will get rid of the 80GB & 750GB HDD's to be replaced by a 1.5TB HDD...
I am looking for some advice on a Linux home server. I'd like it to be low power and reliable. I have searched and found a lot of information online already, but it's too hard to choose due to the many options and opinions.
The main reasons for me to get a home server are (more or less in order of priority):I'd like to have my files centrally, so I can reach them from my laptop, my PC, my phone, from work etc ( or stream them) I'd like to have my own e-mail server for my own domain(s), perhaps also Jabber I'd like to have my own web server to develop and perhaps even to host a website I might play around with home automation in the future Of course I am not here to ask questions regarding the software I would need, but I'd like to get a nice low power (I am a bit of an environmentalist, but not extreme) and reliable server.
I also get the impression that many people like AMD Geode processors and the choice is certainly not limited to these products. I am here for suggestions.It's not a necessity that the server will be small. Actually, I think I'd like to have something with two discs, so I can use RAID (no experience, but it makes sense to do), so the B3 looses from the Via here.Also, I like a bit of flexibility, so I think I would prefer a home network in the future with a separate modem, router, server and WAP over an all in one solution. Perhaps even have the hard disks in a separate case? Actually, I think it makes sense to place a server out of sight (aesthetics, theft, etc), while a WAP should of course be fairly visible.
At the moment, I do not have lots of files to store, but I think it makes sense to get decent capacity anyway (at the very least 500 GB and expandable).Making a good choice is more difficult for me than spending the money. I'd be happy to spend something around 400 - 600 for a good product. I am able to put components together myself if that would give me a much better product for the same amount of money (did it before, but not so often).
For some reason we have some network storage not mounted properly after an unexpected restart (ie OS or memory issue) and the subsequent reboot. Has anyone come across this before? It's a bit strange that certain disks are not mounted.Anyway, to detect this, can we insert an extra line into the /etc/inittab to perform post start checks. For example, I have inserted an extra line before the runlevel scripts in /etc/inittab file.
The line will call /usr/local/fstab-check.sh to perform a check on the disks mounted via /etc/fstab. Am thinking of comparing the output from the command "df" versus the content of /etc/fstab.
I had a power failure the other day and my server shutdown abruptly. After bringing the server up I noticed that the /var partition came up as read only. I was not able to edit the crontab, not able to write to files within /var/log/ and do other write operations within /var.
I did a mount and it showed that /var was mounted read and write but when trying to run certain operations the system was still saying that it was read only.
I don't know any other way to describe it. I have Ubuntu 10.10 installed and before yesterday everything was working flawlessly. Then my mouse started acting erratic and after a few battery changes I narrowed it do to adobe. This is because I was experiencing freezes with my desktop as well as my browser. I use firefox as my default and I couldn't open up tabs or even close the browser. Only way for me to close the browser as to use the windows command ctrl d to minimize firefox, right click and close it. After running ubuntu tweak and then update manager I noticed it pulled down a new version of adobe. Everything worked like a charm until today.
Now I have the same problem. I looked to see what updates were being pulled down that could be causing this weird behaviour. The only thing I can figure is jitsi. However, I've never really used this application. It's frustrating to use ubuntu right now cause I can't do any work. This browser is open in another workspace and if I open another application this will freeze. My taskbar is basically frozen so after I post this I'll have to use ctrl d to minimize this and then right click to close it again.
I was working on our PC and screwed up my logical partition. Not much of a concern there but the problem starts when I was trying to repair them. My gparted says that my whole HD is empty. In fact, when I try to install an OS, it wanted to install it on the whole HD (80-G).
We have a nameserver which we moved over from an old server & ip a couple of weeks ago and updated all our dns records.Currently, our dns provider shows the proper records for our server, and if we dig the server at our dns provider we get the results. However, if we ping the server, or dig it and don't specify our server we get the old ip address.An opendns cache check also sporadically returns the proper results from some of its locations but generally returns the old ip address. Does anyone have any suggestions because this bewildering me.
On the last release, I had this app installed where I could pick my power profile. I could use power conservatively, and performance would suffer a bit, but longer batt life,or I could have it automatically detect, or I could have the apps use all the power they want and then some. I'm looking to reinstall that app. What was the name of it?I can't remember, and so far, can't find.
my SheevaPlug just died, and I need to look for new device to replace it. My goal is to build a fanless, low power consumption, linux server. Currently I am thinking of purchasing a QNAP NAS device (TS-110 model) and installing Debian on it.
Today, I need to talk about some strange problem that faces me in my Linux Server, the power goes down and my server goes off, but when the power returns the server powered on and it works, but some services are not working properly like:
SSH, HTTP
When I try to login remotelt via ssh client like putty it ask me for username but, it hangs after I put my username and not asking me for the password. The second error is related to my web-server which redirect me to Apache default page and when I go for the terminal to make restart for httpd service, here is the output :
> service httpd restart Stopping httpd: [ OK ] Starting httpd: [Thu May 20 10:51:15 2010] [error] (EAI 3)Temporary failure in name resolution: Could not resolve host name admin.abakhiet.info -- ignoring! [Thu May 20 10:53:07 2010] [error] (EAI 3)Temporary failure in name resolution: Could not resolve host name [URL] -- ignoring! [Thu May 20 10:53:07 2010] [warn] NameVirtualHost 196.202.58.94:0 has no VirtualHosts [OK]
I have built a Centos 5.3 server for a friend of mine that is being used as a NAS server. The server has 4 1TB drives in a RAID 5 configuration and a dedicated non raid system drive for the OS. My friend isnt very Linux literate so I need this bow to be relatively simple. I have worked most of it out but have a question with regards to remote reboot.
I need to be able to shut this device down through the power switch without human intervention (at the moment when the power switch is pushed the server asks to confirm shutdown) the server wont have a Monitor connected so this isn't practical. Is it possible to use the power switch to do an clean, immediate shutdown?
The other option is shutdown through a web page is this something that has been done before? I know he can do it through terminal by issuing a shutdown now command but as I said this guy wants something simple. I don't really want to explain everytime he needs to shut the Server down how to do it if he can just do it via a website or even with the power button.
