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• Disaster Recovery Example

  Previously, I use to work for a small internet company that sells dental plans online. Our primary focus concerning disaster prevention and recovery is on our corporate website and private intranet site. We had a multiphase disaster recovery plan that includes data redundancy, load balancing, and off-site monitoring. Data redundancy is a key aspect of our disaster recovery plan. The first phase of this is to replicate our data to multiple database servers and schedule daily backups of the databases that are stored off site. The next phase is the file replication of data amongst our web servers that are also backed up daily by our collocation. In addition to the files located on the server, files are also stored locally on development machines, and again backed up using version control software. Load balancing is another key aspect of our disaster recovery plan. Load balancing offers many benefits for our system, better performance, load distribution and increased availability. With our servers behind a load balancer our system has the ability to accept multiple requests simultaneously because the load is split between multiple servers. Plus if one server is slow or experiencing a failure the traffic is diverted amongst the other servers connected to the load balancer allowing the server to get back online. The final key to our disaster recovery plan is off-site monitoring that notifies all IT staff of any outages or errors on the main website encountered by the monitor. Messages are sent by email, voicemail, and SMS. According to Disasterrecovery.org, disaster recovery planning is the way companies successfully manage crises with minimal cost and effort and maximum speed compared to others that are forced to make decision out of desperation when disasters occur. In addition Sun Guard stated in 2009 that the first step in disaster recovery planning is to analyze company risks and factor in fixed costs for things like hardware, software, staffing and utilities, as well as indirect costs, such as floor space, power protection, physical and information security, and management. Also availability requirements need to be determined per application and system as well as the strategies for recovery.

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• How to decide how backward-compatible my new Mac OS X application should be?

  - by haimg

  I'm currently contemplating writing an OS X version of my Windows software. My Windows application still supports Windows XP, and I know that if I drop support for it now, our customers will cry bloody murder. I'm new to OS X development, and as I learn the technology, APIs, etc., I realized that if I'm going to provide comparable level of backward compatibility (e.g. down to OS X 10.5), I would not be able to use many things that look very useful and relevant in my case (ARC, XPC communications, many others). This is quite different from Windows, in my opinion, where there are very little changed between Windows XP and Windows 7 from desktop application developer's standpoint. So, on one hand, it seems like a complete waste to stick to 2007 or 2009-level API in 2012. On the other hand, according to NetMarketShare report and Stat Owl report Mac OS X 10.5 and 10.6 market share is still 11% and 35%-40% respectively. However, I'm not sure if these older OS users are my target audience (buyers of software utilities) if they didn't bother to upgrade their OS... My question: Are there any other reasons I should take into account when deciding if I target 10.5 or 10.6 or 10.7 for a new application?

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• Quake 3 won't install on Windows 7

  - by Ernest Friedman-Hill

  Today I tried to install Quake 3 from my original 1999 CD on a Windows 7 laptop. Windows 7 resolutely refused to run the installer, helpfully explaining that I might need a 32- or 64-bit version, depending on what my OS is (you have to love those Windows error messages: absolutely correct, but as unhelpful as humanly possible). In any case, of course the 1999 software is 32-bit, and the laptop is 64-bit. But I was pretty sure that 64-bit Windows versions could handle running 32-bit software. What gives?

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• Is it possible to FORMAT an external hard disk that has been encrypted using Storagecrypt?

  - by Pandian John

  Basically the big problem is that about 680 GB of data from my Seagate 2 TB Ext HD is lost because I was experimenting with a software called storagecrypt. I used it a few months ago and today I tried it again but i didn't know that the old password is already set in the hard disk when I pressed the encrypt button. I forgot the password which is disappointing. Not to mention that software uses 128 bit AES encryption so there is no way iam going to recover that data. My question is that is it possible to Format my Hard disk which has been encrypted? What i mean is that is it possible to completely wipe the data just like it is newly bought so that I can use my External Hard disk?( I tried to format by right click-- Format. But the size of the disk is shown as 1 MB. Answers would be very much appreciated. Thanks.

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• Hierarchies in SQL, Part II, the Sequel

  In a followup to his first article on Hierarchies, Gus Gwynn takes a look at the performance of a few different methods of querying a hierarchy. Learn how the HierarchyID stacks up. Are you sure you can restore your backups? Run full restore + DBCC CHECKDB quickly and easily with SQL Backup Pro's new automated verification. Check for corruption and prepare for when disaster strikes. Try it now.

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• If you develop on multiple operating systems, is it better to have multiple computers + displays?

  - by dan

  I develop for iOS and Linux. My preferred OS is Ubuntu. Now my software shop (me and a partner) is developing for Windows too. Now the question is, is it more efficient to have multiple workstations, one for each target OS? Efficiency and productivity is a higher priority than saving money. I have a 3.4Ghz i7 desktop workstation running Ubuntu and virtualized Windows with two displays, and I'm putting together an even more powerful i7 Hackintosh with 16GB RAM (to replace my weak 2.2Ghz i5 Macbook Pro). My specific dilemma is whether I should sell the first computer and triple boot on the second one, or buy two more displays and run both desktop systems simultaneously. Would appreciate answers from developers who write software for multiple OSes. Running guest OSes in VirtualBox on one system not ideal, because in my experience performance is seriously degraded under virtualization. So the choice is between dual/triple booting on one system vs having two systems, one for OSX+iOS/Windows (dual boot) and the other for Ubuntu (which I prefer to use as my main OS). For much of our work, I write a server-side application in Linux and a client for iOS (or for Windows or OS X) simultaneously.

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• What will be correct answer to "why is NoSQL faster than SQL" on interview?

  - by Cynede

  It's just nonsense for me personally. I can't see any performance boost by using NoSQL instead of SQL. Maybe SQL over NoSQL, yes but not in that way. I think that if I answer "I have no idea" or something like that it will be bad answer because this doesn't really look like a fake-question, it's a serious question on interview but how should be looking correct answer on this question? Or am I missing something about NoSQL?

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• Corticon provides Business Rules Engines for Silverlight, WCF and .NET developers

  Now Corticon Business Rules Engines and Business Rules Management Systems users can enjoy support for the Windows 7 operating system, and for Silverlight and Windows Communication Foundation developers. The new Corticon 4.3 provides numerous performance, usability, and integration enhancements and provides the industry-first cloud deployment option for a business rules engine. span.fullpost {display:none;}

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• Write and fprintf for file I/O

  - by Darryl Gove

  fprintf() does buffered I/O, where as write() does unbuffered I/O. So once the write() completes, the data is in the file, whereas, for fprintf() it may take a while for the file to get updated to reflect the output. This results in a significant performance difference - the write works at disk speed. The following is a program to test this: #include <fcntl.h #include <unistd.h #include <stdio.h #include <stdlib.h #include <errno.h #include <stdio.h #include <sys/time.h #include <sys/types.h #include <sys/stat.h static double s_time; void starttime() { s_time=1.0*gethrtime(); } void endtime(long its) { double e_time=1.0*gethrtime(); printf("Time per iteration %5.2f MB/s\n", (1.0*its)/(e_time-s_time*1.0)*1000); s_time=1.0*gethrtime(); } #define SIZE 10*1024*1024 void test_write() { starttime(); int file = open("./test.dat",O_WRONLY|O_CREAT,S_IWGRP|S_IWOTH|S_IWUSR); for (int i=0; i<SIZE; i++) { write(file,"a",1); } close(file); endtime(SIZE); } void test_fprintf() { starttime(); FILE* file = fopen("./test.dat","w"); for (int i=0; i<SIZE; i++) { fprintf(file,"a"); } fclose(file); endtime(SIZE); } void test_flush() { starttime(); FILE* file = fopen("./test.dat","w"); for (int i=0; i<SIZE; i++) { fprintf(file,"a"); fflush(file); } fclose(file); endtime(SIZE); } int main() { test_write(); test_fprintf(); test_flush(); } Compiling and running I get 0.2MB/s for write() and 6MB/s for fprintf(). A large difference. There's three tests in this example, the third test uses fprintf() and fflush(). This is equivalent to write() both in performance and in functionality. Which leads to the suggestion that fprintf() (and other buffering I/O functions) are the fastest way of writing to files, and that fflush() should be used to enforce synchronisation of the file contents.

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• Brother DCP - 7020 ? Another Solid 3 In 1 From Brother

  Brother delivers a combination of style, performance, and usability once again with the Brother DCP-7020. Its sleek looks and compact size house a solid piece of hardware equipped with print, scan, a... [Author: Erik Lynch - Computers and Internet - May 11, 2010]

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• Intel RAID0 on Windows 8 not Displaying Correct Media Type

  - by kobaltz

  I have my primary C Drive which consists of 2 Intel 120GB SSD Drives in a RAID0. I have a clean install of Windows 8 Pro, latest MEI software, latest RST software, latest Intel Toolbox. Prior to this I had installed Windows 8 Pro as an upgrade. When I went into the Optimize Drives while in the Upgrade installation, it showed the Media Types as Solid State Drives. However, now since I am in a brand new install, it is showing the Media Type as Hard Disk Drive. I am worried about this because of the trim not working properly. Before when in the upgrade, it showed SSD as the media type and the Optimize option would perform a manual trim. Unfortunately, my search credentials on Google are so common to many other things (ie Raid0, SSD, Windows 8, Media Type) that all I am finding are useless topics. Before, (found on random site) it showed the Media Type as below

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• eSTEP TechCast - December 2012

  - by uwes

  Dear partner, we are pleased to announce our next eSTEP TechCast on Thursday 6th of December and would be happy if you could join. Please see below the details for the next TechCast.Date and time:Thursday, 06. December 2012, 11:00 - 12:00 GMT (12:00 - 13:00 CET; 15:00 - 16:00 GST) Title: Innovations with Oracle Solaris Cluster 4 Abstract:Oracle Solaris Cluster 4.0 is the version of Solaris Cluster that runs with Oracle Solaris 11. In this webcast we will focus at the integration of the cluster software with the IPS packaging system of Solaris 11, which makes installing and updating the software much easier and much more reliable, especially with virtualization technologies involved. Our webcast will also reflect new versions of Oracle Solaris Cluster if they will be announced in the meantime. Target audience: Tech Presales Speaker: Hartmut Streppel Call Info:Call-in-toll-free number: 08006948154 (United Kingdom)Call-in-toll-free number: +44-2081181001 (United Kingdom) Show global numbers Conference Code: 803 594 3Security Passcode: 9876Webex Info (Oracle Web Conference) Meeting Number: 255 760 510Meeting Password: tech2011 Playback / Recording / Archive: The webcasts will be recorded and will be available shortly after the event in the eSTEP portal under the Events tab, where you could find also material from already delivered eSTEP TechCasts. Use your email-adress and PIN: eSTEP_2011 to get access. Feel free to have a look. We are happy to get your comments and feedback. Thanks and best regards, Partner HW Enablement EMEA

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• Best way to synchronise photos to three machines. Laptop, Desktop, NAS

  - by wookiebreath

  I'm using Picasa as my photo management software, and I have a collection of photos that gets downloaded from my cameras either onto my Desktop or onto my Laptop. I'd like to automatically have copies of all my photos on both my laptop, desktop and my NAS. Does anyone else do this? Do you have any recommendations for Software or processes? Is there anything I need to be careful of? I had a look at Dropbox, but it appears to have a 2 gig limit? What about something like SyncBack?

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• Which one is better deal: iPed or Apple iPad?

  - by Evan Carroll

  The Chinese knockoff iPed is now in the wild and receiving a lot of attention? Does anyone know how the Android distribution it ships with compares with Apple iPad's software pack? How does the look-and-feel of the iPed fit with the Apple iPad? Quite frankly, I have little interest in Apple products because of the company policy. But, cheaper comparable hardware running open-source software is pretty interesting... Anything useful to add.. Here are the Apple iPad specs for comparison. The iPed is priced at $199.00, the Apple iPad starts at $499.00 .

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• How to programmatically control slave computer on BIOS level?

  - by PovilasSid

  I want to run some test on hardware level. My goal is to create or find a way to control one computer from another down to BIOS settings changing. For example: Master computer sends a signal for slave to restart and opens BIOS settings dialog. Master computer sends a signal to slave to change BIOS parameters and then restart. Then slave fully boots up master starts up some software on slave. Then software finishes operations cycle continues till certain conditions are met. I know that I am looking for a complex thing but mainly what I need are correct keywords because now I am being flooded by BIOS configurations tutorials. Main concerns: Is it possible without using any custom tailer chip? How can master monitor salve`s hardware activity? How to let master handled more than one slave? How what connections are needed to create this kind of setup? (cables)

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• Being rocked...

  - by ZacHarlan

  After almost four and half years, I finally escaped from the world of telemarketing.     I'm now at a place that writes really good code, values testing, does routine code reviews, collaborates with each other so continuously and effectively somebody should make a documentary about it!   Today alone, I had two really smart and well respected developers go line by line through my code and show me how to make it better.  Seriously, people pay really good money for something like this and they don't get near the quality of feedback as I got!     +1 for me finally getting to a point in my career where i get to work with some of the best of the best in the software world!   I've been rocked by the fact that places like this actually exist.     I've been Rocked by the sheer size, complexity and simplicity of our website.     Most importantly I've been ROCKED by the fact that this many smart people check their egos at the door, gel together and look for ways to make software better than how they found it.  This is how to grow a business with tech... hire great people and watch them go!   Seriously, bravo.

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• Did Ubuntu 10.04 Achieve Its Ten Second Boot Goal?

  <b>Phoronix:</b> "Canonical expressed their plans to achieve a ten-second boot time in June of last year for Ubuntu 10.04 LTS, with their reference system being a Dell Mini 9 netbook. In February, we last checked on Ubuntu's boot performance and found it close, but not quite there yet..."

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• New Marketing Assets Available

  - by Cinzia Mascanzoni

  NEW translated demand generation materials available for the following Oracle Marketing Kits, designed to help partners generate sales around Oracle's solutions: Improve Database Capacity Management with Oracle Storage and Hybrid Columnar Compression Accelerating Database Test & Development with Sun ZFS Storage Appliance Upgrade SAN Storage to Oracle Pillar Axiom SPARC Refresh with Oracle Solaris Operating System SPARC Server Refresh: The Next Level of Datacenter Performance with Oracle’s New SPARC Servers Oracle Server Virtualization Oracle Desktop Virtualization

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• Google I/O 2012 - Go Concurrency Patterns

  Google I/O 2012 - Go Concurrency Patterns Rob Pike Concurrency is the key to designing high performance network services. Go's concurrency primitives (goroutines and channels) provide a simple and efficient means of expressing concurrent execution. In this talk we see how tricky concurrency problems can be solved gracefully with simple Go code. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 169 2 ratings Time: 51:27 More in Science & Technology

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• Improving Strategic Financial Planning at Wyndham Worldwide

  Timothy Koropsak, Manager of Corporate Financial Planning at $3B hospitality company Wyndham Worldwide, talks with Nigel Youell, Product Marketing Director for Enterprise Performance Management at Oracle about their implementation of Hyperion solutions and how this has helped them improve their strategic financial planning processes. Tim highlights how they now have Operating and Treasury forecasts on one common platform and can produce fully integrated financial statements with GAAP accounting integrity and ensures that the strategic plans consolidating from their three business units are reliable and accurate.

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• connect to paltalk server using a proxy

  - by Navid

  Hi I want to use paltalk, which is a kind of chat software, but the ports that this applications uses are closed in my country. What I need to do is to use a proxy server. Unfortunately the software itself does not provide a proxy setting. I though it would be possible to run paltalk on an O.S. installed on a virtual machine (say virtualbox) and configure the network setting of virtual machine to direct all its traffic through a proxy on host Operating system, but I could not find a way to do so neither. can anyone please help me?

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• Mount linux partition as Windows network share over internet

  - by CptEO

  I have a Linux server running RHEL 6. I have two Windows servers. All servers are connected directly to the web with an external IP, they are not in a local lan. What I would like to achieve is to setup the Linux server so that it offers a single share (the whole partition) that can be mounted as network drive within Windows. I don't want to use any 3rd party software to access the linux server because I want to use the linux server as a backup for Bare Metal Restore. In order to do so, I need to be able to access the linux partition from within the Windows Recovery Enviroment where I cannot install any 3rd party software. The linux server should only be accessible from given IP addresses (e.g. the 2 windows servers). Does anyone know if the setup I would like to have is possible?

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• Adding cygwin on right click on windows explorer

  - by PushpRaj

  I wish to add a command on right click menu in explorer that opens current directory with cygwin. For same I have successfully added these registries: [HKEY_CURRENT_USER\software\classes\directory\shell\cygwin] @="c:\\cygwin\\bin\\bash.exe --login -i -c \"cd '%1'; bash\"" [HKEY_CURRENT_USER\software\classes\drive\shell\cygwin] @="c:\\cygwin\\bin\\bash.exe --login -i -c \"cd '%1'; bash\"" but this adds the command only when on some folder or drive. I want generic right click on explorer, on which, search gives me this registry to edit: [HKEY_CLASSES_ROOT\Directory\Background\shell\cygwin] @="c:\\cygwin\\bin\\bash.exe --login -i -c \"cd '%1'; bash\"" My problem lies with the value of the key, which doesnt work on %1 but on some static value like /cygdrive/c Could someone please tell me the proper way to pass current directory to the command, also please refer me some basic and advanced pages for same. Thank you.

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• Restoring files from blueprint on command

  - by Nick

  I am setting up a server. I already have rented a machine running centOS 6 but I have run into a bit of a technical problem with configuring the server software: The server will have some files that it will try to read/write to them but what I need is a way to have a blueprint of these files and everytime the server restarts the files that it used get deleted and replaced by the blueprints. I have heared of a RAM disks or Virtual File Systems but didnt quite understand how they work or how to set them up. The server software is written in java which means bash commands can be run from it. I cannot modify what happens when the server shuts down entirely what I can do is run a command before the server runs the final shutdown save

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• Java Magazine: Developer Tools and More

  - by Tori Wieldt

  The May/June issue of Java Magazine explores the tools and techniques that can help you bring your ideas to fruition and make you more productive. In “Seven Open Source Tools for Java Deployment,” Bruno Souza and Edson Yanaga present a set of tools that you can use now to drastically improve the deployment process on projects big or small—enabling you and your team to focus on building better and more-innovative software in a less stressful environment. We explore the future of application development tools at Oracle in our interview with Oracle’s Chris Tonas, who discusses plans for NetBeans IDE 9, Oracle’s support for Eclipse, and key trends in the software development space. For more on NetBeans IDE, don’t miss “Quick and Easy Conversion to Java SE 8 with NetBeans IDE 8” and “Build with NetBeans IDE, Deploy to Oracle Java Cloud Service.” We also give you insight into Scrum, an iterative and incremental agile process, with a tour of a development team’s Scrum sprint. Find out if Scrum will work for your team. Other article topics include mastering binaries in Maven-based projects, creating sophisticated applications with HTML5 and JSF, and learning to program with BlueJ. At the end of the day, tools don’t make great code—you do. What tools are vital to your development process? How are you innovating today? Let us know. Send a tweet to @oraclejavamag. The next big thing is always just around the corner—maybe it’s even an idea that’s percolating in *your* brain. Get started today with this issue of Java Magazine. Java Magazine is a FREE, bi-monthly, online publication. It includes technical articles on the Java language and platform; Java innovations and innovators; JUG and JCP news; Java events; links to online Java communities; and videos and multimedia demos. Subscriptions are free, registration required.

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