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• Active Directory management with low user rights

  - by DemonWareXT

  Our problem: The client, a normal user, has to be able to reset multiple passwords at once. Around 30 in one go. This would call for powershell or something along these lines, but for AD and Powershell one needs to be domain administrator. My solution would be to make a service that runs on the AD server and take connections from a program. The service would then do the AD changes. So far so good, I would just like to hear some other thoughts on this problem. Because I sure can't be the only one with it

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• 'hijacking' gui and mapping certain controls to certain functions. VNC. TouchOSC

  - by Nick

  I need a VNC LIKE application which rather than sharing the screen, can take control of a specific application and then share that functionality across a network to multiple clients. Obviously, VNC requires use of the mouse and therefore only one user can do something at one time, this is NOT what I am after. I am after something that can hijack the graphic user interface, map certain controls, and then display them in another piece of software (perhaps like TOUCHOSC) The software I would like to map and share is called YAMAHA STUDIO MANAGER and is used to control certain Yamaha audio hardware, and in my case a Yamaha LS9 and M7CL mixing console. Its free.

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• Ubuntu install can't find hard drives

  - by Casey Hungler

  I recently got a Dell Inspiron Special Edition 7720 computer. I am trying to install Ubuntu along side Windows. When I use the WUBI installer, the installation of Ubuntu works as long as I do not boot into Windows; if I boot into Windows, when I go back into Ubuntu, I am given a variety of error messages which claim to have corrupt or missing kernel/root directory, etc. I have been working with this problem for about a week, and have reinstalled Ubuntu MANY times. So far, I have eliminated all of the following problems: Corrupt WUBI installation (Downloaded multiple times, used on other systems), I have tried using a CD and a flash drive, both of which work on other computers. I know that no program within Ubuntu is creating the problem. I know that others have successfully installed Ubuntu on a computer with my operating system (Windows 7 SP1). This is a much shortened version of the original question, which has been up for about 5 days, and included a more detailed description of the problem, but left everyone clueless as to the source of this problem. When I spoke with the Dell service technician who came over today to replace my keyboard, he suggested that the driver for my HDD was so new that it was not compatible with the current version of Ubuntu. His reasoning is as follows: 1) During an install from a flash drive or CD, where I am supposed to get the option to wipe my system or create a dual boot, I get a window that asks me to select a hard drive partition, but none are listed. 2) This model of computer was made public in June of this year, while Ubuntu was released in April Adopting this theory, it would seem to me that the WUBI install fails after booting into Windows because Ubuntu can no longer find the files that it needs to load. Does this theory seem at all plausible to anyone? I just want to install Ubuntu and have it stay on my computer. I don't care how I put it there, I just need it to work, so I would TRULY appreciate any advice or suggestions anyone could give. Thanks so much for your time and support!!!

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• Catch and identify source of browser launch events

  - by beldaz

  My Windows XP computer is exhibiting strange behaviour, launching multiple browser windows, but not to any URL. Initially this was in Firefox, but when I uninstalled it the same happened in IE. Norton 360 detects no malware, and I wonder if there is some application that is accidentally causing the problem. I'd like to diagnose the problem further. It seems that the default browser is being launched by something, so I'd like to work out the culprit. Is there some method (or handy utility) that can catch requests to XP to launch the default browser, and identify the source?

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• Nginx load distribution and multi-domain SSL

  - by Steve Clark

  I'm researching into the best methods of two new parts of our infrastructure, hopefully finding a single solution for both. 1) We're currently running a single application server, and we're going to be adding an additional application server and load balance between the two. 2) We handle a few thousand domains across the application server(s), and we're looking to support SSL. The best method i've come across so far is using nginx for it's Load Distribution to serve the requests to the application servers, and for it's SSL support. If a request is using SSL, nginx accepts the request on, terminates SSL and pipes to apache (app servers). Now, that's all good, but i'm yet to figure out how we can let nginx handle multiple domains using SSL. We're potentially looking at using UCC SSL Certs, so we can support 150 domains on a single certificate, with each cert on a single IP. I'm all new to this (My experience is just with physical load balancers and a single domains on SSL), so any advice would be very much appreciated.

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• Problem Updating/Installing Java

  - by Click Upvote

  I've had Java installed on my computer for a while. However lately, whenever I go to a website which has got a java applet in it, i only see a white box where the applet previously used to run (this is happening on multiple sites, not just one). I figured I might have to download java again, so I went to this page and downloaded the installer. However, each time the installer finishes downloading whatever it needs to, I get the error: 'Unable to uncompress java installer' (or perhaps its 'Unable to uncompress downloaded files'. What shall I do? I'm using Windows XP, and I'm still able to run Netbeans on the computer, the problem seems to only be with applets, and occurs in all browsers.

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• Client/Server game even in solo: any big problem?

  - by Klaim

  I'm making a game which have strong basic design based on multiplayer but also should provide a really interesting and self-sufficient solo game. A bit like a real-time strategy game. The events and actions taken shouldn't be as massive and immediate as in a FPS, so you can also think the networking like for an RTS. It's a PC game, targetting Windows, MacOSX and Linux (Ubuntu & Fedora). It's programmed in C++, using a variety of open source libraries, so I have great (potential) control over the performances. So far I always considered that just making the game work with two applications, client & server, even in solo mode was ok. However, as I'm in the process of starting the network code I'm having doubts about if it's a good idea. I'm not a specialist so I might be missing something in my analysis. I see these pros and cons: Pros: The game works only one way so if I fix a bug it should apply on all game modes, whatever the distance with the server is; Basic networking issues would be detected early, including behaviour with the protection softwares (firewall) installed (i am not specialist so this might be wrong); Cons: I suppose that even if it should be really fast enough, networking client and server on the same computer would still be slower than no networking and message passing in (one) process memory. Maybe debugging would be more difficult? I don't have experience in this case but so far I assume that debugging with Visual Studio allows me to debug multiple process so it shouldn't be really different. Also, remote debugging. My question is: is there a big disadvantage that I missed? Or maybe there are advantages that I missed and that should encourage me to just continue with only client-server game sessions?

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• Using Bullet physics engine to find the moment of object contact before penetration

  - by MooMoo

  I would like to use Bullet Physics engine to simulate the objects in 3D world. One of the objects in the world will move using the position from 3D mouse control. I will call it "Mouse Object" and any object in the world as "Object A" I define the time before "mouse object" and "Object A" collide as t-1 The time "mouse object" penetrate "Object A" as t Now there is a problem about rendering the scene because when I move the mouse very fast, "Mouse object" will reside in "Object A" before "Object A" start to move. I would like the "Mouse Object" to stop right away attach to the "Object A". Also If the "Object A" move, the "Mouse object" should move following (attach) the "Object A" without stop at the first collision take place. This is what i did I find the position of the "Mouse Object" at time t-1 and time t. I will name it as pos(t-1) and pos(t) The contact time will be sometime between t-1 to t, which the time of contact I name it as t_contact, therefore the contact position (without penetration) between "Mouse object" and "Object A" will be pos(t_contact) then I create multiple "Mouse object"s using this equation pos[n] = pos(t-1) * C * ( pos(t) - pos(t-1) ) where 0 <= C <= 1 if I choose C = 0.1, 0.2, 0.3,0.4..... 1.0, I will get pos[n] for 10 values Then I test collision for all of these 10 "Mouse Objects" and choose the one that seperate between "no collision" and "collision". I feel this method is super non-efficient. I am not sure the way other people find the time-of-contact or the position-of-contact when "Object A" can move.

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• Disable Control-L hotkey on YouTube

  - by Heptite

  I am used to using Ctrll to access my address bar. Unfortunately YouTube "helpfully" defines Ctrll as a hotkey to jump forward several seconds in the currently playing video, so I need a way to stop YouTube from adding that key binding. A Greasemonkey/Scriptish userscript that disables the binding after page load would be acceptable. To be clear, this is while I am on a YouTube video's page, not on a third-party site that has embedded a YouTube video, and the behavior occurs when the Flash player does not have focus. Note: I am aware that Altd does the same as Ctrll in Firefox, but I'm too used to Ctrll and I'd rather not be forced to switch. Edit: OS-specific solutions are less desirable since I use multiple OSes; in-browser solutions are preferred.

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• What are solutions and tradeoffs to maintain search result consistency in a web application

  - by iammichael

  Consider a web application with a custom search function that must display the results in a paged manner (twenty per page with up to hundreds of thousands of total results) and the ability to drill down to individual results that maintain next/previous links to navigate through the results. Re-executing the search on each page request to get the appropriate results for that page of data can be too expensive (up to 15s per search). Also, since the underlying data can change frequently (e.g. addition of new results), re-executing could cause the next/previous functionality to result in inconsistent behavior (e.g. the same results reappearing on a later page after having been viewed on an earlier page). What options exist to ensure the search results can be viewed across multiple pages in a consistent manner, and what tradeoffs does each option have in terms of network, CPU, memory, and storage requirements? EDIT: I thought caching the query search results was an obvious necessity. The question is really asking about where to cache the result set and what tradeoffs might exist to each. For example, storing the ids of the entities in the result set on the client, or storing the IDs of the entities themselves in the users session on the web server, or in a temporary table in the database. I'm not looking specifically for a single solution as different scenarios may result in different approaches (and such a question would be more suited for stackoverflow.com rather than here), but more of a design comparison between the possible approaches.

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• Is it possible to live-boot VirtualBox from a USB flash drive?

  - by bw.

  To clarify, I'm not asking if you can boot from USB from within VirtualBox. I would like to make a portable version of Windows 7 that I can run from a USB drive on any machine. I'm putting a distro of Linux on my laptop, but I manage a Windows domain at work so I'd like an easier management solution than trying to use Linux tools to interface with a Windows DC(as RDP to a DC is not always an option). The reason I'm inquiring about VirtualBox... I plan on carrying this portable installation with me and using it on multiple machines, so I would like to avoid driver conflicts (which I imagine would happen if I only installed Windows on a flash drive). Basically, I need a way to boot an installation of Windows 7 from USB that still allows me to install/remove/update programs as if it were installed on a standard hard drive, and not freak out over different hardware configurations. Please help, superusers!

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• Got root, now how should I configure my server?

  - by L. De Leo

  I've been a developer for years and by trade I had to know a little bit of server side configuration. But now I find myself needing to manage my own VPS instance (Amazon EC2) and I'm lost. I'd like to know what are the common ways to configure an Apache and MySQL server that is secure and efficient. For example right now I'm doing everything as root but I doubt that's the best way at all. My whole Apache is configured to serve 1 site when I'd like it to be able to serve multiple sites. Where do I start?

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• Movement on the X an Z axis are combined?

  - by Magicaxis

  This is probably a stupid question, but I'm trying to simply move a 3D object up, down, left, and right (Not forward or backward). The Y axis works fine, but when I increment the object's X position, the object moves BOTH right and backwards! when I decrement X, left and forwards! setPosition(getPosition().X + 2/*times deltatime*/, getPosition().Y, getPosition().Z); I was astonished that XNA doesnt have its own setPosition function, so I made a parent class for all objects with a setPosition and Draw function. Setposition simply edits a variable "mPosition" and passes it to the common draw function: // Copy any parent transforms. Matrix[] transforms = new Matrix[block.Bones.Count]; block.CopyAbsoluteBoneTransformsTo(transforms); // Draw the model. A model can have multiple meshes, so loop. foreach (ModelMesh mesh in block.Meshes) { // This is where the mesh orientation is set, as well // as our camera and projection. foreach (BasicEffect effect in mesh.Effects) { effect.EnableDefaultLighting(); effect.World = transforms[mesh.ParentBone.Index] * Matrix.CreateRotationY(MathHelper.ToRadians(mOrientation.Y)) * Matrix.CreateTranslation(mPosition); effect.View = game1.getView(); effect.Projection = game1.getProjection(); } // Draw the mesh, using the effects set above. mesh.Draw(); } I tried to work it out by attempting to increment and decrement the Z axis, but nothing happens?! So using the X axis changes the objects x and z axis', but changing the Z does nothing. Great. So how do I seperate the X and Z axis movement?

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• How can I force all requests to be SSL when using EC2 load balancer?

  - by chris

  I currently have a single EC2 instance which is forcing all requests to be secure by using mod_rewrite: RewriteEngine On RewriteCond %{SERVER_PORT} !443 RewriteRule ^(.*)$ https://%{HTTP_HOST}$1 [R,L] I am planning on moving to a load balanced setup, with multiple back-end instances. If I set up my EC2 load balancer with my certs, do I need to use SSL to communicate between the LB and my instances? If not, is it as simple as replacing the RewriteCond with RewriteCond %{HTTP:X-Forwarded_Proto} ^http$ Edit: I tried using the x-forwarded-proto, but it does not appear to work. Is there another way to detect if someone is connected to the LB via SSL?

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• Windows 7 Intermittent Connection Issues (Continuously "identifying")

  - by andrewktmeikle

  I have an issue solely with my desktop windows 7 machine on my network (the network has multiple different devices, on the same and different operating systems) and the issue is that irregularly, although sometimes frequently, I briefly get disconnected from the internet (briefly is for around 5-10 seconds). However, I never loose the bars on the wifi thing, eg I don't get the yellow triangle, but it goes to the identifying stage and then reconnects. The reason I noticed the problem was when I was streaming music it would stop and I would refresh the page and it would start working again ( turned out it was because it took that amount of time to get connected again). So my question is, what would cause the intermittent issues and start the "identifying" process again. I don't think its my router, because no one else is having problems, so the other option is that its a problem specifically with my machine. I'm connecting to a Netgear DG834GT router, and I'm using a Edimax Wireless-N150 USB Adapter. Anyone have any ideas?

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• Classes as a compilation unit

  - by Yannbane

  If "compilation unit" is unclear, please refer to this. However, what I mean by it will be clear from the context. Edit: my language allows for multiple inheritance, unlike Java. I've started designing+developing my own programming language for educational, recreational, and potentially useful purposes. At first, I've decided to base it off Java. This implied that I would have all the code be written inside classes, and that code compiles to classes, which are loaded by the VM. However, I've excluded features such as interfaces and abstract classes, because I found no need for them. They seemed to be enforcing a paradigm, and I'd like my language not to do that. I wanted to keep the classes as the compilation unit though, because it seemed convenient to implement, familiar, and I just liked the idea. Then I noticed that I'm basically left with a glorified module system, where classes could be used either as "namespaces", providing constants and functions using the static directive, or as templates for objects that need to be instantiated ("actual" purpose of classes in other languages). Now I'm left wondering: what are the benefits of having classes as compilation units? (Also, any general commentary on my design would be much appreciated.)

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• VMWare Lab Manager: What's the best way to build Library Configurations?

  - by mcohen75

  We're using Lab Manager within our QA group. We use it to quickly deliver environments we need for testing. We have 25 Templates, 14 Library Configurations and counting. To build up our templates we: Create a base template that is a bare bones version of Server 2008 + basic configuration (Windows Update, Firewall exceptions) Create a linked clone for each Server template we need (SQL Server 08, 05, etc) Repeat for other OS's, like Windows 7 and Windows XP Then we create configurations: Create a workspace configuration with multiple images in it (Say Server 08 w/SQL Server and Windows 7) Deploy the configuration and make some minor configuration changes Undeploy and Capture to Library How do we keep this manageable? When I need to update a configuration, should I: Rebuild it from templates Clone it to a workspace, make changes, recapture it to the library keep the configuration in my workspace (don't delete it after capturing it to library), deploy it to make changes and then re-capture to library

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• i18n and L10n (1)

  - by Aaron Li

  Internationalization (i18n) is a way of designing and developing a software product to function in multiple locales. This process involves identifying the locales that must be supported, designing features which support those locales, and writing code that functions equally well in any of the supported locales. Localization (L10n) is a process of modifying or adapting a software product to fit the requirements of a particular locale. This process includes (but may not be limited to) translating the user interface, documentation and packaging, changing dialog box geometries, customizing features (if necessary), and testing the translated product to ensure that it still works (at least as well as the original). i18n is a pre-requisite for L10n. Resource is 1. any part of a program which can appear to the user or be changed or configured by the user. 2. any piece of the program's data, as opposed to its code. Core product is the language independent portion of a software product (as distinct from any particular localized version of that product - including the English language version). Sometimes, however, this term is used to refer to the English product as opposed to other localizations.   Useful links http://www.mozilla.org/docs/refList/i18n/ http://www.w3.org/International/ http://hub.opensolaris.org/bin/view/Community+Group+int_localization/

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• SQL Server 2005/2008 Licensing Decision

  - by Hakim

  Hello, I have purchased a dedicated server from a reputable Hosting company. They only have Windows Server 2008 OS installed on it and NO Sql server. Server Configuration is Intel Dual core Processor with 2GB of RAM and 100GB HDD. I wanted to host my web services on that server which will be using the MS SQL Server 2005 at the backend.There are multiple web services and each using a different Database. Microsoft has CAL basis Licensing , Which I understand is based on number of users accessing the database directly ( I may be wrong ) . But my users will be accessing the webservice and no direct connection to the database as such. Yes but the number of users accessing the web server cannot be known and is not under my control. Which Licensing is best suited for this kind of setup ? I don't need analysing and BI services right now ,but i may want to upgrade that in future may be. Any help will be appreciated. Thanks

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• How to tune Windows 2008r2 and IIS to maximize single file download speeds?

  - by uSlackr

  We recently put up an IIS site (on WinSvr 2008r2) that is used almost exclusively for downloading files over the internet. The data exists as a large collection of .zip files ranging from 1MB - 35GB in size. We want to allow a lot of downloads during a day (more than 500GB) but have implemented an outbound ASA throttle at 60mbps in order to preserve bandwidth for other uses. The total link speed is 100mbps. Here's the interesting part: While we can serve up multiple downloads to hit the 60mbps cap, we cannot get any single download to exceed 2.5M bytes/sec (20 Mbits/s). Is there any TCP or IIS tuning we can do to push up individual download speeds? Or something else to look at?

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• Less daunting front end for SQL Server

  - by Martin

  We currently have a few users who have been using Access very succesfully to throw around large amounts of data. We've now got to the point where the data is just too large to be held in Access, as well as wanting to hold it in a single place where multiple users can access it. We have therefore moved the data over to SQL Server. I want to provide a general tool that they can use to view the data on the server and do some simple things like run queries and filters and export the data for offline manipulation. I don't want the support headaches that might come with rolling out SQL Management Studio, and neither do I want to have to create an Access database with links for each current database or ones that are created in the future. Can anyone recommend a simple tool that will connect to a server, list all the databases and allow a user to drill into a table and look at the data. Many thanks.

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• Storing images in file system and returning URLs or virtually resizing and returning byte arrays?

  - by ismaelf

  I need to create a REST web service to manage user submitted images and displaying them all in a website. There are multiple websites that are going to use this service to manage and display images. The requirements are to have 5 pre-defined image sizes available. The 2 options I see are the following: The web service will create the 5 images, store them in the file system and and store the URL's in the database when the user submits the image. When the image is requested, the web service will return an array of URLs. I see this option to be a little hard on the hard drive. The estimates are 10,000 users per site, and lets say, 100 sites. The heavy processing will be done when the user submits the image and each image is going to be pulled from the File System. The web service will store just the image that the user submits in the file system and it's URL in the database. When the user request images, the web service will get the info from the DB, load the image on memory, create its 5 instances and return an object with 5 image arrays (I will probably cache the arrays). This option is harder on the processor and memory. The heavy processing will be done when the images get requested. A plus I see for option 2 is that it will give me the option to rewrite the URL of the image and make them site dependent (prettier) than having a image repository for all websites. But this is not a big deal. What do you think of these options? Do you have any other suggestions?

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• How can you easily determine the textureRect for tiled maps in SFML 2.0?

  - by ThePlan

  I'm working on creating a 2d map prototype, and I've come across the rendering bit of it. I have a tilesheet with tiles, each tile is 30x30 pixels, and there's a 1px border to delimitate them. In SFML the usual method of drawing a part of a tilesheet is declaring an IntRect with the rectangle coordinates then calling the setTextureRectangle() method to a sprite. In a small game it would work, but I have well over 45 tiles and adding more every day, I can't declare 45 intRects for every material, the map is not optimized yet, it would get even worse if I would have to call the setTextureRect() method, aside from declaring 45 rectangleInts. How could I simplify this task? All I need is a very simple and flexible solution for extracting a region of the tilesheet. Basically I have a Tile class. I create multiple instances of tiles (vectors) and each tile has a position and a material. I parse a map file and as I parse it I set the materials of the map according to the parsed map file, and all I need to do is render. Basically I need to do something like this: switch(tile.getMaterial()) { case GRASS: material_sprite.setTextureRect(something); window.draw(material_sprite); break; case WATER: material_sprite.setTextureRect(something); window.draw(material_sprite); break; // handle more cases }

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• New whitepaper: Evolution from the Traditional Data Center to Exalogic: An Operational Perspective

  - by Javier Puerta

  IT organizations are struggling with the need to balance the day-to-day concerns of data center management against the business level requirements to deliver long-term value. This balancing act has proven difficult and inefficient: systems and application management tools are resource intensive and traditional infrastructure management architectures have developed over time on a project by project basis. These traditional management systems consist of multiple tools that require administrators to waste time performing too many steps to handle routine administrative tasks. Operational efficiency and agility in your enterprise are directly linked to the capabilities provided by the management layer across the entire stack, from the application, middleware, operating system, compute, network and storage. Only when this end to end capability is provided will we experience the full benefit of a scalable, efficient, responsive and secure datacenter. Managing Exalogic is substantially less complex and error prone than managing traditional systems built from individually sourced, multi-vendor components because Exalogic is designed to be administered and maintained as a single, integrated system (Figure 1). It is at the forefront of the industry-wide shift away from costly and inferior one-off platforms toward private clouds and Engineered Systems. Read the full whitepaper "Evolution from the Traditional Data Center to Exalogic: An Operational Perspective". Full document is available for download at the Exadata Partner Community Collaborative Workspace (for community members only - if you get an error message, please register for the Community first).

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• New Whitepaper: Evolution from the Traditional Data Center to Exalogic: An Operational Perspective

  - by Javier Puerta

  IT organizations are struggling with the need to balance the day-to-day concerns of data center management against the business level requirements to deliver long-term value. This balancing act has proven difficult and inefficient: systems and application management tools are resource intensive and traditional infrastructure management architectures have developed over time on a project by project basis. These traditional management systems consist of multiple tools that require administrators to waste time performing too many steps to handle routine administrative tasks. Operational efficiency and agility in your enterprise are directly linked to the capabilities provided by the management layer across the entire stack, from the application, middleware, operating system, compute, network and storage. Only when this end to end capability is provided will we experience the full benefit of a scalable, efficient, responsive and secure datacenter. Managing Exalogic is substantially less complex and error prone than managing traditional systems built from individually sourced, multi-vendor components because Exalogic is designed to be administered and maintained as a single, integrated system (Figure 1). It is at the forefront of the industry-wide shift away from costly and inferior one-off platforms toward private clouds and Engineered Systems. Read the full whitepaper "Evolution from the Traditional Data Center to Exalogic: An Operational Perspective". Full document is available for download at the Exadata Partner Community Collaborative Workspace (for community members only - if you get an error message, please register for the Community first).

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