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• low-cost RAID NAS for home use?

  - by gravyface

  Have a noisy, power-hungry Pentium 4 based Ubuntu server that I want to replace with a nice, low-power mini-ITX/Intel Atom-based machine to do my network services (DHCP, DNS, IPSec, Web/mail, FTP, etc.) and am thinking of a (hopefully) equally-low powered NAS using NFS over GbE with at least 1 TB space and a RAID 5 (preferred) or RAID 0 (likely) configuration for redundancy with a couple of spare disks I can swap in as needed down the road. Would I be better off getting a full sized ATX mobo/case and configuring the RAID internally? I really want to keep power consumption down as much as possible as I leave my home server up 24/7.

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• Mac OS X Server 10.6 - Apple's software mirrored RAID worth it?

  - by Arko

  Hi, I am installing an Intel Xserve (Quad core Xeon) with Snow Leopard Server (10.6) on two 80Gb 7200rpm SATA HDs. I created a mirrored RAID set using Disk Utility with those two drives, all went fine. I was then asking myself if this is really a good idea. I know that an hardware RAID system would be better, but what about this software RAID? Have you any feedback on this? Will it work fine if one HD breaks down? Does this affect performance? [UPDATE] In short: Hardware RAID is better than software RAID which is better than none. Thank you all for the answers, they were very helpful. Especially Gordon's script to monitor failures. As Apple's software RAID is pretty silent about a drive failure.

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• Does Hotspot Shield hide my activity from my ISP?

  - by test

  Can Hotspot Shield make your activities invisible to your ISP? Or can they still see what you're downloading if they so choose? Here's the text from the product description: Hotspot Shield protects your entire web surfing session; securing your connection at both your home Internet network & Public Internet networks (both wired and wireless). Hotspot Shield protects your identity by ensuring that all web transactions (shopping, filling out forms, downloads) are secured through HTTPS. Hotspot Shield also makes you private online making your identity invisible to third party websites and ISP’s. I'm just not sure what it means by "invisible to third-party websites and ISPs" and if that means the ISP can still see what I'm doing.

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• Unusual Restart

  - by Nikit Batale

  I am currently running Windows XP Professional on my computer. My configuration is Intel Dual Core 3.00 GHz, 512 MB RAM, 160 GB HDD. Sometimes, the computer just restarts without any particular reason. After restarting, I get an error report, "Windows has just recovered from a serious error." Such incidents happen once in 5-6 days. I don't face any other problems apart from this. Also, I don't face this problem in Ubuntu Karmic Koala though.

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• WAMP, DD-WRT, Using DNSMasq to access multiple virtual hosts via aliases on local network

  - by christian

  I've updated my question to coincide with my progress I am attempting to configure WAMP on my development machine. I would like to use it in conjunction with DD-WRT's DNSMasq feature to access multiple virtual hosts via aliases (dev1.local,dev2.local,etc.) over my local wireless network. I have followed the following tutorial which allows me to setup virtual hosts and access on local network by ip addresses. http://www.logicspot.com/web-development-2/viewing-a-locally-hosted-website-with-your-smartphone/ I've got this up and running. For simplicity sake I'd still like to setup DNSMasq to connect via aliases. I have followed the following tutorial http://www.question-defense.com/2008/12/29/add-static-dns-entries-to-dd-wrt-router-firmware And the aliases load on my development machine, but I can not access via the aliases on my mobile devices connected to the local network. I can however access via IPs. Thanks for any help you can provide

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• Unidentified Connection in Compaq CQ61Windows7 OS on DSL cable network connection

  - by Mohammed Thouseef

  I have Dell studio with shared DSL internet connection my router is "NETGEAR DG834" & Network connection discription is "Broadcom netlink tm gigabit ethernet" this connection is working fine with dell laptop with Vista homepremium OS. My Question is? If i connect HPcompaq presario CQ61 in this connection it will automatically select Public network and display unidentified connection i tried several times but not suceeded its OS is Win7 home premium. but wireless networking is working fine only this problem is faceing with DSL cable connection when i diagnos the connection an error will generate "Local Area Connection does not have a valid IP configuration" in LAN Connection status window i noticed IPV4 & IPV6 Connectivity is showing "No Network Access" please can you clarify whats the problem.

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• ndiswrapper wlan driver installed, but wlan still does not work

  - by mugetsu

  I'm trying to get my Atheros AR1111 EB-WG PCI wireless adapter to work. Right now wifi is not even detected. I'm on ubuntu 12.04 64bit and I managed to find a xp64bit driver. I followed the exact steps here: https://help.ubuntu.com/community/WifiDocs/Driver/Ndiswrapper And where I do ndiswrapper -l I get something like : {name of driver} : driver installed device ({Chipset ID}) present which shows that the driver installed properly However, after I load the new module : sudo modprobe ndiswrapper nothing happens, and iwconfig shows that I still have no wlan. I tried to do dmseg | grep ndiswrapper, but there were no driver loading errors or anything strange. I also have blacklist ath5k, ath8k in /etc/modprobe.d/blacklist.conf What am I doing wrong? What could be causing this?

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• How to set up a SSH tunnel and/or reverse SSH tunnel?

  - by bossytoe

  I'm located in Shanghai China and am trying to set up an SSH tunnel (or a reverse ssh tunnel?) to my brother's server located in the States. I'm using windows xp and he has a mac. We are both using wireless routers (not sure if this is relevant). He's given me the address and password (for his server, I think), and I've downloaded myentunnel (which he recommended), but am not sure what to do now. I've also downloaded the foxyproxy add-on for mozilla (my preferred browser), and am hoping there is someone out there who can help guide a newbie like me! Thanks in advance.

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• Ad-hoc connection between iPhone and Macbook Pro

  - by Phil Nash

  I sometimes find it useful to connect my iPhone to my Macbook Pro by creating an ad-hoc wireless network from the MBP and connecting to that from the iPhone. However, what I find is that sometimes this works and sometimes it doesn't. When it's not working the symptoms are usually that I see the ad-hoc SSID in the list of available networks on the iPhone, can connect to it from there (including entering my WEP key), and it shows up as the wifi network in use. However I don't get the wifi symbol in the taskbar (it remains as 3G) and attempting to use the connection (e.g. trying to connect to iTunes or Keynote using their respective Remote apps) fails saying that there is so wifi connection. I've tried rebooting both the iPhone and the MBP, recreating networks with different SSIDs and tried different channels - all to no avail! I'm especially puzzled that (a) sometimes it works just fine first time and (b) the Settings app seems to think its all connected fine. Is there anything else I should be trying?

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• Error while compiling Cuda Accelerated Linpack hpl_2.0_FERMI

  - by ghostrustam

  I use Ubuntu 11.04 x86_64 CUDA 4.0 OpenMpi 1.4stable MKL When I compile, I get this error: ar r -L/home/limksadmin/hpl-2.0_FERMI_v13/lib/CUDA/libhpl.a HPL_dlacpy.o HPL_dlatcpy.o HPL_fprintf.o HPL_warn.o HPL_abort.o HPL_dlaprnt.o HPL_dlange.o HPL_dlamch.o ar: -L/home/limksadmin/hpl-2.0_FERMI_v13/lib/CUDA/libhpl.a: No such file or directory make[2]: *** [lib.grd] Error 9 make[2]: Leaving directory `/home/limksadmin/hpl-2.0_FERMI_v13/src/auxil/CUDA' make[1]: *** [build_src] Error 2 make[1]: Leaving directory `/home/limksadmin/hpl-2.0_FERMI_v13' make: *** [build] Error 2 Make.CUDA: LAdir = /opt/intel/mkl/lib/intel64 LAlib = -L $(TOPdir)/src/cuda -ldgemm -L/usr/local/cuda/lib64 -lcuda -lcudart -lcublas -L$(LAdir) -lmkl_intel_lp64 -lmkl_intel_thread -lmkl_core -liomp5 MPdir = /usr/local/mpi/openmpi MPinc = -I$(MPdir)/include MPlib = -L$(MPdir)/lib/libmpi.so CC = /usr/local/mpi/openmpi/bin/mpicc What could be the problem?

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• HP Jetdirect 175x and HP Officejet K7103 printsharing

  - by Richard

  I have managed to get this setup working , but it is very unreliable and either the printserver or the printer seem to crash and wont respond after 1 or 2 prints, although I am able to still access the web config of the 175x. I had a similar problem with a linksys wireless print server with the same problem and assumed that a HP print server would do the job better...grrrr!! Anybody any ideas what to do next? It is not possible to flash the printserver, nor the printer as far as I know, so I assume I have some iffy settings in the print server config somewhre. All our users are W7 or Vista BTW. Cheers Richard

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• CentOS 5.5 APIC issue on ESX 4.1 & ML115

  - by Adnan

  Hi, I've just installed vSphere 4.1 on an HP ProLiant ML115 G5 Quad-core and am trying to install CentOS 5.5 as a guest system. However, when the guest boots up I get a calibrate_APIC_clock warning and a kernel panic message. I've come across this knowledge base article on the vmware website which suggests moving the guest onto another Intel based host (!). Funnily enough I don't have a collection of spare host servers sitting around, so can anyone suggest another solution? Alternatively, would installing an earlier version of CentOS get around this issue, or would a yum update put me back to square one? How about BIOS settings, could anything be tweaked there? Thanks.

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• setup Zyxel USG 20W as L2TP VPN Server

  - by Massimo

  I've a Zywall USG 20W (wireless disabled) behind a router supplied by the ISP. All ports (both TCP and UDP) on the ISP router are forwarded to the 20W. I'm trying to configure an L2TP VPN to be used by Windows Xp / 7 with Microsoft native client. This was working before with a different firewall, so I'm pretty sure that all the required packets are flowing to the 20W. I followed a tutorial from the italian Zyxel Website, but I cannot get the VPN to work. Always cannot pass phase 2, and I see the following on the log: [ID]: Tunnel [Default_L2TP_VPN_Connection] Phase 2 local policy mismatch Phase 1 goes fine. In Windows the error is always 788. This happens regardless the proposals I set in the phase 1 and 2 setting. What should I check ? Is there any way to get more detailed diagnostic info (policy mismatch is too generic) ? Thanks a lot to whom may help. Massimo.

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• Airport Extreme roaming setup

  - by Daniel Johansson

  We've got three Apple AirPort extremes and want to setup them as a roaming wlan network on my company. My question is what's the correct setup for this? All three AP:s is supposed to create the same wireless network "MyWlan" and we want roaming supoprt between them so that client can move from floor to floor without having to switch wlan or reconnect. We don't want to use any kind of DHCP or NAT on the AirPorts, only bridge mode. Do we connect the AirPorts to the lan/ethernet using the WAN port or one of the LAN ports? What's the correct settings in the config utility? Have one of the AirPorts create a network and setup the other two to extend the created network from AirPort 1 or have them all create the same network and set the same wlan password?

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• Dual monitors through 1 HDMI port

  - by Carlos

  I currently have a Dell Studio XPS 13 laptop connected to a 24" HP monitor (w2448hc). Im thinking on getting a second one, however am wondering what i need for the setup (hardware wise). Also I was wondering it there is any down side to it, or something i should be aware of. For example, image quality loss, GPU overloading, or anything important I should know. More than anything Im interested in your advice. Also the monitors do have built in speakers (HDMI sound output), is the sound going to be reproduced by only one monitor or both? Specs Model: Dell Studio XPS 13 OS: Genuine Windows® 7 Home Premium 64-Bit CPU: Intel® CoreTM 2 Duo P8600 (2.4GHz, 3MB L2 Cache, 1067MHz FSB) Chipset: NVIDIA® GeForce® MCP79MX RAM: 4GB 1067MHz DDR3 SDRAM Graphics: SLi NVIDIA® GeForce® 9500M - 256MB Thanks for your advice, if there is anything additional i need to buy an you have a personal preference pass the brand name so i can check it out. Thanks!

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• Can't ping host from vmware guest using bridged networking

  - by user199421

  Host is Windows 7 Guest is Ubuntu 11.04 Network adapter is wireless I can ping other computers on the network but not the host. No firewall are involved. Sniffing the traffic with wireshark it looks like both the host and the guest are using the same MAC address. My guest simply doesn't receive a reply when asking for 192.168.1.101 (the host) My router has no problem giving both of them different IP addresses but maybe duplicate MAC address is the problem? It seems logical that both will have the same MAC address (from the host point of view) but it strange that there is no work around for this because otherwise I don't see how the host and guess are supposed to communicate.

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• ReadyNAS Duo - FTP home network connectivity issue

  - by dwabyick

  I have a ReadyNas Duo that I recently purchased and configured on my local home network. I'm an AT&T DSL subscriber using their default 2701HG-B Gateway (2Wire) wireless router. Basically, I have managed to configure my ReadyNAS, and can access HTTP shares and WINS shares just fine, but cannot get access to it via FTP. I've enabled it in the 'Standard File Protocols' section in the UI, and made a share have read/write default access via FTP. My settings: Port: 21 Authentication mode: User Allow upload resumes: Yes Passive ports: 1024-65535 Masquerade as: (empty, but I've tried the internal IP address). I've even poked around at my router, which has a firewall, and even tried to poke a hole for the 'FTP Server'app for the ReadyNAS. Doesn't seem like I should need to do this, or should. Any ideas what else to check? Thanks! -Daniel

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• Installed ASUS HD4670, now unable to install ANY Debian due to low memory corruption

  - by Alfabravo

  I have a desktop PC which initially had the Intel D946gzis mobo, its chipset as video controller, some RAM and so. There I installed Debian without a problem alongside WindowsXP. I've bought an ASUS HD 4670 video card, installed it on the PC and now the installed Debian does not work, while the Ubuntu live CD refuses to run no matter if I set acpi, apic on or off... it throws me some low memory corruption at position just like shown here. With normal configuration, Debian throws kernel panic (keyboard lights blinking). Anyone have faced this before? Ideas? Thanks!! (meanwhile, debian hides in a virtualbox :'( ) Edited: Tried Ubuntu 9.10 x64 (due to the fact i've a core2duo at 2GHz) and it throws a kernel-panic to me (flashing caps and num LEDs). On screen, can be read different lines with things like: ... [ 1.957161] [] rb_erase+0xd6/0x160 [ 1.957266] [] page_fault+0x25/0x30 Could it be something about this new video card having ddr3?

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• Dolby Digital Live (DDL) on Asus Rampage II Gene (Creative X-Fi Extreme)

  - by kevyn

  Hi there, I have an Asus Rampage II Gene motherboard which has X-Fi extreme built in. I can get it to work with Windows 7 ok using the Creative drivers, however when I try and install the DDL/DTS add on pack from Creative I get the error message: "There are no supported audio device available. You need to close the application. Click OK to close the application now" I don't understand it because I have the Creative software installed ok and supporting the sound without any problems. In Device manager the audio device comes up as 'High definition audio device' and uses driver: 6.1.7600.16385 from Microsoft. I tried using the Creative drivers which show up as 'soundmax HD audio' however these do not allow any of the Creative products to run properly. Please can anyone offer any help? Or even just confirm that DDL can work with my onboard sound? Windows 7 Ultimate 64 bit 6GB DDR3 XFX GS8800 384mb Asus Rampage II Gene Intel i7 920 (2.66)

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• SSH Tunneling from Windows to Linux/Ubuntu

  - by Mike

  My question is for my girlfriend basicly.... She works at a mall and doesn't do much so she likes to get on myspace and facebook as most girls do and yahoo to check her email. Well she uses her laptop to connect to a wireless network that doesn't allow it.... so I did some research and got putty and connected to my linux box I have here at home and it worked somewhat. My problem is it only views my webpages I have created here on this box it won't go outside of the linux host. I did it like this in putty... port is 1000 and hostname:80 is what I got outa my research then connected after seting up the tunnel bam worked for all webpages on my box but when she puts in www.myspace.com it redirects to my index.php in my var/www and won't travel outside that as I said.. Any help would be much obliged.

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• What is the minimum power supply wattage needed for a Pentium 2.4GHz system?

  - by scottmarlowe

  It looks like I've got a dead Antec True 330 power supply in an older desktop that has an Intel D845PESV motherboard, a Pentium 2.4GHz processor, 2 dvd/cd writers, 2 hard drives, and other typical devices. I have an even older computer that is not being used that has a 200W power supply. Can a 200W power supply drive what I've listed above? Or, put another way, what is the minimum power supply specs for the above system? (A new 350W power supply will run me $30--so buying a new one is not a problem--but I'm curious about the question nonetheless).

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• Win7 glass-like Aero feature - unable to enable

  - by user24752

  I have a 4 months old PC with Win7 Home Premium x64. Windows Experience Index is 5.4. Intel i5 processor 6GB memory nVidia GT220 video card. During games, Windows reported shortage of system resources, so switched the desktop back to "Windows 7 Basic" desktop theme. After game-over, I could switch back to the normal theme and enjoy all Aero eye-candies. However, lately the glass-like window transparency feature got disabled, and I found no ways to enable it again. There is a Troubleshouting option in Control Panel saying: "Find and fix problems with transparency and other visual effects". If I launch that, it does not find anything. Event viewer is full with the following warnings: The Desktop Window Manager is experiencing heavy resource contention. Scenario : The Desktop Window Manager responsiveness has degraded. Taskbar, window borders, etc, none of the other transparent features work, and I cannot turn them on. Any thoughts?

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• Dual monitors though 1 HDMI port

  - by Carlos

  I currently have a Dell Studio XPS 13 laptop connected to a 24" HP monitor (w2448hc). Im thinking on getting a second one, however am wondering what i need for the setup (hardware wise). Also I was wondering it there is any down side to it, or something i should be aware of. For example, image quality loss, GPU overloading, or anything important I should know. More than anything Im interested in your advice. Also the monitors do have built in speakers (HDMI sound output), is the sound going to be reproduced by only one monitor or both? Specs Model: Dell Studio XPS 13 OS: Genuine Windows® 7 Home Premium 64-Bit CPU: Intel® CoreTM 2 Duo P8600 (2.4GHz, 3MB L2 Cache, 1067MHz FSB) Chipset: NVIDIA® GeForce® MCP79MX RAM: 4GB 1067MHz DDR3 SDRAM Graphics: SLi NVIDIA® GeForce® 9500M - 256MB Thanks for your advice, if there is anything additional i need to buy an you have a personal preference pass the brand name so i can check it out. Thanks!

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• Multiple vlan issue with procurve switch

  - by Chris-AZ

  I have a cisco asa5505 as my rtr/fw(10.1.3.254). I have vlan 1 and vlan 3. Vlan 1 is my default all access vlan. Vlan 3 is my Guest(dmz) vlan. I can't seem to get a dhcp ip address when my laptop is plugged into port 42 on my procurve. I have plugged my laptop directly into the firewall and it gets a dhcp ip fine(the firewall is dhcp server). the firewall is plugged into port 41. Only vlan3 needs to go over port 41. I'm sure I have a bonehead config problem however I'm about ready to pull out what little hair I have left. vlan 1 name "Computers" forbid 45 untagged 1-41,43-44 ip helper-address 10.1.1.16 ip address 10.1.1.1 255.255.255.0 tagged 46-48 no untagged 42,45 exit vlan 3 name "Guest Wireless" ip helper-address 10.1.3.254 ip address 10.1.3.1 255.255.255.0 tagged 41-42,44-48 exit

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• Remote control a computer using another computer

  - by Dean

  I've got a main desktop computer at home, I'd like watch movies using it but able to control it afar. For example, I would like to lay on my bed and control the desktop using my own laptop via wireless. I've been looking for solutions to my question. I tried to use remote desktop, I can pause the movie but I then have to go to the pc to log in the OS again. I also tried to bind my desktop to my mobile phone over bluetooth, this works as I can control the mouse etc. but I found I can barely see the mouse pointer when at long distance. I still wish I can use my laptop as a remote control, is this possible?

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