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• VMWare Workstation Dev Machine Disks: one fast or four echofriendly raid?

  - by Avi

  I'm building a new dev computer. It will be running a few VMWare Worksation virtual machines - A dev machine running VS-2010, a build machine, a version-control machine, a web server for testing, a "personal" machine running office etc. I'll be connecting the computer to my stereo, so I'll also be running iTunes (possible on a dedicated VM) and I want the computer to be a silent one. I'll probably use an Antec P183 case. I was advised on Serverfault to use Raid10 for performance. Raid 10 uses 4 disks. So, my question is as follows: In terms of heat, noise, reliability, warranty, price, capacity and performance, what would you suggest: A Raid10 4 disk array using eco-friendly disks such as the $94 1TB Western Digital Caviar Green, or one high performance disk such as the 2TB Western Digital Caviar Black at $280?

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• What poor management decisions have you had to deal with?

  - by tombull89

  As a junior technician I've had to deal with (or will have to deal with) some problems in the past and only being a junior technician I don't have the confidence or respect from management staff to speak up. For instance, we're having a entirely new system. From Windows Server 2003/XP going to Windows Server 2008 R2/Windows 7/VMWare/Digital Signage and the current amount of time dedicated to the training of the IT support department currently stands at 0. They seem to think that all IT systems are the same and are going to get a bit of shock when I can't help them. I think there;s some UK legislation saying a school/business have to put money and time aside for training, but I'm not sure. What have you had to deal with?

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• Chipset GPU causes a massive slowdown

  - by zyboxenterprises

  My AMD Radeon HD 7700 recently broke (fan stopped working and GPU overheated), and now I'm running on internal chipset graphics, and it causes a massive slowdown of the whole PC. I've changed the graphics memory from 32MB (minimum) to 256MB (highest), and it hasn't made any difference whatsoever. I'm using Windows Aero, and disabling it should have made a small difference, but it didn't; the whole PC is still slow. I know that it's not the computer build, because I built it myself, and it was a lot faster when it had the AMD Radeon HD 7700 in it, which is the reason why I believe it's the internal chipset graphics that are causing the problem. Is this behavior normal? I don't have the cash right now to go out and buy a new dedicated GPU. I'm using an ASRock N68C-GS FX motherboard with an AMD FX 4100 (overclocked to 4.3GHZ), with 4GB RAM. The overclock was an attempt to resolve this issue, and it isn't related to this issue that the integrated graphics is causing a slowdown.

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• Storing Cards and PCI Compliance

  - by Nimbuz

  I'm developing a SaaS service and will be managing payments as a merchant for customers, and since we'll be using multipe payment processors depending on users location, amount and other factors so its important to store card details. I did some research and from what I understood all you need is a PCI compliant host (VPS, Dedicated or Private Cloud) and get it validated and certified through some provider like TrustWave etc... Is that correct or am I missing something? Also, would be great if you could suggest a few (not necessasrily cheap, but affordable) PCI compliant hosts. Many thanks

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• Is this a valid backup strategy for MongoDB?

  - by James Simpson

  I've got a single dedicated server with a MongoDB database of around 10GB. I need to do daily backups, but I can't have downtime with the database. Is it possible to use a replica set on a single disk (with 2 instances of mongod running on different ports), and simply take the secondary one offline and backup the data files to an offsite storage such as S3 (journaling is turned on)? Or would using master/slave be better than a replica set? Is this viable, and if so, what potential problems could I have? If not, how do I conceptualize this to work?

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• xinet vs iptables for port forwarding performance

  - by jamie.mccrindle

  I have a requirement to run a Java based web server on port 80. The options are: Web proxy (apache, nginx etc.) xinet iptables setuid The baseline would be running the app using setuid but I'd prefer not to for security reasons. Apache is too slow and nginx doesn't support keep-alives so new connections are made for every proxied request. xinet is easy to set up but creates a new process for every request which I've seen cause problems in a high performance environment. The last option is port forwarding with iptables but I have no experience of how fast it is. Of course, the ideal solution would be to do this on a dedicated hardware firewall / load balancer but that's not an option at present.

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• eTrayz: Replace base system with a bootstrapped Debian

  - by knoopx

  I bought an eTrayz NAS time ago. The device is more or less good but it ships with a closed-source custom linux and a bunch of broken web-apps. I wanted to replace the whole system with a raw Debian installation. I successfully bootstrapped a Lenny Debian into a chroot and I'm able to use use it. However I would like it to be the default system and to boot automatically at login. The device itself ships with a bundled 2.6.24.4 kernel. I think the kernel is on a dedicated flash memory so I would prefere not to re-flash it. What do you think is the best way to accomplish it?

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• Ispconfig - file not found in created site

  - by Raphaël

  I have a dedicated server is installed ISPConfig 3! I make my start with this server admin panel. I created my DNS zone (marseille-autrement.net), when I make a zonecheck, I only have 2 warnings. When I go to the site, I have the default template. I created my ftp user, I uploaded the above file index.php (http://www.marseille-autrement.net/index.php) and then I get an error "not found". What is my mistake ? Before I was able to create the site marseille-autrement.com and I could place a redirection (htaccess). For the .net, any file that I put, I delete ... I can not access them. An idea?

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• Notebook with NVIDIA Optimus not switching video card in games

  - by user140739

  I have a Samsung RC720 notebook with Intel Integrated Graphics and NVIDIA GeForce GT 520M. As you can see it has two video adapters and Optimus is supposed to switch between them. But when I choose dedicated GPU in NVIDIA Control Panel and try to run, for example, GTA IV, it uses integrated graphics and I get very poor performance. I have already installed last NVIDIA and notebook drivers, chose high-performance in NVIDIA Control Panel, tried to execute with "Run with graphics processor..." context option and so on. Thanks for help.

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• Remote desktop to my KVM virtual machine

  - by user6

  I've got a dedicated server running Debian 6. I've set up a windows 7 virtual machine using KVM. Now I'm trying to get Remote desktop working. I'm guessing i have to do some port forwarding. The virtual machine is in a NAT. Remote desktop is already set up on it (another virtual machine can connect). I've tried using the iptables and countless of virsh commands of which I'm not even sure what they did. Anyone knows how to get this working?

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• Is it possible, and is it advisable, to host a mail server on a Windows Azure VM role?

  - by JcFx

  I know this question has been asked on various forums before, and that all the answer were negative, but many of the answers are quite old, and with Azure developing so quickly it seems useful to ask it again. Can we run a mail server (such as mailenable) on an Azure VM? And if not, why not? I've seen one posting on the MS forums (here) that suggests the IP of the Azure machine would be blacklisted as a source of spam. Why would this be (as opposed to hosting a mailserver on a dedicated box)?

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• Should I impersonate PHP via FastCGI?

  - by AKeller

  I am installing the latest version of PHP onto IIS 7.5 via FastCGI, and all of the instructions say that FastCGI should impersonate the calling client by setting fastcgi.impersonate = 1 If my website will have this configuration dedicated application pool application pool identity of ApplicationPoolIdentity anonymous authentication only (as IUSR) why do I want to impersonate? I come from an ASP.NET background, where the IUSR gets read-only permissions and the application pool identity gets any write permissions. Giving write access to the IUSR usually opens the door for WebDAV vulnerabilities. So I hesitate to let PHP run as the IUSR. I can't find many people asking this question (1 | 2) so I think I must be missing something. Can someone clarify this for me?

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• Taking an image backup of an entire server?

  - by WarDoGG

  I am currently using a dedicated server for my hosting needs. However, the costs are too high and I would like to suspend everything until I work out my business strategy again. Is there a way I can take a complete backup of the filesystem and run it in VMWare ? I cannot just copy the entire filesystem because there are lots of tools installed and tight changes to the server configuration files I myself dont know about (by the developers), but I need a snapshot of the entire disk image along with processes installed and everything is as is because for development needs, I need to work on this copy in VMWare or VirtualBox etc. Is it possible for me to take a full image copy ? How do I do it ?

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• If i make a mail server can i send bulk email?

  - by Jake Smith

  I work for a small company and we have fallen into the fad of "email campains" a.k.a Junk mail. So far the company has gotten a subscriber list from our website, and paid a good chunk of change for a emailer program. The problem is, Our list has close to 4,000 people on it and growing. with gmail only allowing 100 emails per account through on SMTP and I am on a tight budget so I cant hire anyone else. I was thinking of doing a dedicated mail server off of the website server we have running in the office. Is it possible? to make emails on your own server, and then send it through your own SMTP? if it is, what software would I need and is if free or low cost at least. We run a WAMP server, i set it up just for information, but i could switch it to lamp or whatever if need be. Thank you for your time and youre answers

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• Exclude an input language from Alt+Shift/Ctrl+Shift switching cycle on Windows

  - by Headcrab

  I have 3 input languages installed on my Windows 7: English, Russian and Japanese. So when I switch between them by Ctrl+Shift, they go like English - Russian - Japanese - English - ... I don't use Japanese much, but still need it occasionally. Is there a way to somehow exclude it from the "Ctrl+Shift cycle" without uninstalling it from the system? E. g. Ctrl+Shift will be like English - Russian - English - ..., while I still could switch to Japanese by a dedicated keyboard shortcut, say, Ctrl + 3? That extra Ctrl+Shift to go through Japanese just to switch between English and Russian is very annoying, and using Ctrl+1, Ctrl+2, Ctrl+3 for each input language isn't very ergonomic, either.

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• Maximum memory allocation for 32bit linux kernel

  - by LedZeppelin

  I was reading this article that talks about how maximum amount of ram dedicated for kernel usage in 32 bit windows is 2GB even when the total amount of ram is 4GB. http://www.brianmadden.com/blogs/brianmadden/archive/2004/02/19/the-4gb-windows-memory-limit-what-does-it-really-mean.aspx\ Is this the same for 32bit linux environments like 32-bit ubuntu 10.04? IE is the max kernel allocation 2GB ram even if the total main memory 4GB? If you increase the total amount of memory to 64GB of ram by recompiling the kernel with the PAE option enabled, what is the maximum amount of ram you can dedicate for kernel usage? Is it still 2GB? Or can you increase it?

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• optimizing mod_fcgid for a dediciated site

  - by Mike Williams

  i'm using mod_fcgid and I'm trying to find resources on how i can optimize it for running a dedicated website but have had no luck... so far i have: ive got apache2 running and im trying to have php processes spawned and always running so apache does not have to keep spawning them. # Fastcgi configuration for PHP5 LoadModule fcgid_module modules/mod_fcgid.so MaxRequestsPerProcess 5000 # Maximum number of PHP processes. MaxProcessCount 8 # Number of seconds of idle time before a process is terminated IPCCommTimeout 1800 IdleTimeout 1800 AddHandler fcgid-script .php5 .php4 .php .php3 .php2 .phtml FCGIWrapper /usr/local/cpanel/cgi-sys/php5 .php5 FCGIWrapper /usr/local/cpanel/cgi-sys/php5 .php4 FCGIWrapper /usr/local/cpanel/cgi-sys/php5 .php FCGIWrapper /usr/local/cpanel/cgi-sys/php5 .php3 FCGIWrapper /usr/local/cpanel/cgi-sys/php5 .php2 FCGIWrapper /usr/local/cpanel/cgi-sys/php5 .phtml

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• Mail server for Windows 2008

  - by waldev

  I'm going to get a Windows 2008 dedicated server sometime soon. I'm going to have my website hosted on it, so, I also want to run a mail server on the same machine to receive any mail sent to the website (I use the SMTP Server in IIS for sending mail, but this about receiving not sending) Does Windows 2008 have a built-in POP3 OR IMAP server? If so, can it be accessed through a webmail interface? I mean does it also have a webmail interface similar to OWA for example? If not, do you have suggestions for a good mail server with a webmail interface, preferably free or open source? MS Exchange is above my budget and my needs are so simple anyway. I heard good things about hMailServer but I checked and it doesn't have a webmail interface. I know I can outsource this to a third party for a little monthly fee, but I prefer to host my own server. Thanks for any suggestions

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• Does changing web hosts (changing a domain's nameservers) affect the private nameservers / glue records created under that domain?

  - by Kris

  We currently have a virtual dedicated server with GoDaddy and have 4 domains under it. I ended up creating private nameservers under, say mydomain_a.com, and have ns1.mydomain_a.com and ns2.mydomain_a.com as the nameservers for the other 3 domains. Now, we're thinking of switching web hosts (not domain registrar just the host) which means I have to change mydomain_a.com's nameservers to the new host. Will that affect or mess with the other 3 domains still pointing to ns1.mydomain_a.com and ns2.mydomain_a.com? Will that affect the private nameservers / glue records in anyway? Currently: domain: mydomain_a.com nameservers (GoDaddy): ns1.mydomain_a.com ns2.mydomain_a.com domain: mydomain_b.com nameservers (GoDaddy): ns1.mydomain_a.com ns2.mydomain_a.com After the Change: domain: mydomain_a.com nameservers (Other Host): ns1.some_other_host_ns.com ns2.some_other_host_ns.com This is my Question, Would this be affected? domain: mydomain_b.com nameservers (GoDaddy): ns1.mydomain_a.com ns2.mydomain_a.com

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• how to debug mysql has gone?

  - by fefe

  I have a virtual machine(Ubuntu 12.04, MySQL 5.5) running under VMware and is dedicated to host a mysql server. I connect to this server on internal IP. I'm trying to find out why I get mysql server has gone error. One my windows machines apache it stops because of this issue. I have been trying to fine tune my mysql my.cnf with the following parameters but did not bring the desired result. # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = 0.0.0.0 # # * Fine Tuning # wait_timeout = 180 key_buffer = 384M max_allowed_packet = 64M thread_stack = 192K thread_cache_size = 8 # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched myisam-recover = BACKUP max_connections = 500 table_cache = 64 #thread_concurrency = 10 # # * Query Cache Configuration # query_cache_limit = 1M query_cache_size = 32M how to debug this issue what is missing from configuration to avoid this error?

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• One vs. many domain user accounts in a server farm

  - by mjustin

  We are in a migration process of a group of related computers (Intranet servers, SQL, application servers of one application) to a new domain. In the past we used one domain user account for every computer (web1, web2, appserver1, appserver2, sql1, sqlbackup ...) to access central Windows resources like network shares. Every computer also has a local user account with the same name. I am not sure if this is necessary, or if it would be easier to configure and maintain to use one domain user account. Are there key advantages / disadvantages of having one single user account vs. dedicated accounts per computer for this group of background servers? If I am not wrong, one advantage besides easier administration of the user account could be that moving installed applications and services around between the computers does not require a check of the access rights anymore. (Except where IP addresses or ports are used)

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• Redundant Router and Load Balancing vs. DDoS attack

  - by colgatta

  With a small server farm at a hoster with great support and conditions, I worry about the increasing number of DDoS attacks against this hoster (not my web project, but other clients on the same location). I have booked a redundant router and load balancer as managed service with this hoster to share the load with all the dedicated servers. However, I was lost again today because another one's project was attacked with DDoS for hours :-( Each hour means hundreds of dollars loss whenever my adserver and tracking is not reachable. Even time-out advertising have to be paid by me but can not be resold to my clients without the servers being available. All the time, the servers, the load and traffic is OK and health, but no chance to keep this stable/online if the hoster is vulnerable. Anyone has ideas or suggestions how to protect - even against DDoS?

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• Why do most routers not include local DNS?

  - by user785194

  I need to change my firewall/router, and I'd prefer something with built-in DNS to resolve queries on the local subnets. I've got a mixed Linux/Windows system, often with only one computer turned on, and I frequently have problems resolving local names. I don't want to keep a Linux box permanently on just for DNS, and I'd prefer to have DNS in my router appliance, which is always on. I search Google for this occasionally but never find anything. You always get the obvious answers - it's not possible, put everything in /etc/hosts, NetBIOS, dedicated box, etc. So what am I missing? Why don't "cheap" routers let you do this? I'm pretty sure that Cisco kit does this. Almost all cheap routers will let you do MAC address reservation, to let them assign static IP addresses for DHCP. So why can't they simply do DNS as well for everything on the local subnets, just passing through remote domains to the ISP?

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• Plesk Subdomain folder group and permission problem

  - by Jake

  I am working on a dedicated server from some web host. In Plesk 9.5, after creating a subdomain sub.domain.com, with login using main account, plesk automatically creates a folder domain.com/subdomain/sub with user and group of root I want to upload some files (the framework api) in domain.com/subdomain/sub itself instead of domain.com/subdomain/sub/httpdocs but I can't. domain.com/subdomain/sub/httpdocs has user and group of [main account_user] and psaserv respectively Is there a way to modify the user/group of domain.com/subdomain/sub from plesk so that I can upload files inside it? Otherwise, what is the next best solution?

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• squid ip based authentication

  - by Ian R.

  I have 10 ip's on a VPS and squid3 installed. I want to lease all of them to 10 co-workers. The authentication should be ip-based. Basically I want to allow only their home ip address (not internal - we're not on a network) to connect to my squid. I would also like to offer them a dedicated ip from my outgoing addresses. I managed to get it working using username/password based authentication but some software do not support that feature so I would like to switch to this limit if possible. Any guidance/sample acl's?

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