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  • Completely replacing (upgrading) a RAID 5 array of disks on an ESXi server

    - by jshin47
    I have a development server that runs several VM on ESXi 5. It has an array of disks in the RAID 5 configuration where all of the disks are currently the same size. I would like to expand storage on this box greatly, but I am not sure what the smartest way to go about this would be. My current plan is to: Turn off all VM Copy VM folders from server to another location Verify that I can mount all the VM on the new location (ie that the copy went ok) Replace all the disks with new, bigger ones Reinstall ESXi5 Copy the VM back over This seems like it might take a while to accomplish and is not terribly slick, especially since I will have to reconfigure ESXi 5, but is there a smarter alternative?

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  • MXML Component Life Cycle

    - by Shruti
    Hi, I am new to flex. I am confused with how component life cycle goes when component build in MXML. and if MXML calls methods automatically then how to call any method in life cycle explicitly. Could anybody please explain me Thanks Shruti

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  • using Inheritence with GUI (graphical user interfaces) in Java

    - by maya
    hi everyone, I work on inheritence with GUI (graphical user interfaces) let me explain for example I made super class which is vehicle and the subclass is car, so the code to make inheritence will be public class Car extends Vehicle then I want to build the class Car as JFrame like public class Car JFrame implements ActionListener { so the problem is that I couldn't put both codes in the same class, and I need to do that. anyone help me. thanks in advance I wish that the question would be clear

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  • Running Rails as an embedded app inside of a gem

    - by randombits
    I'm trying to understand what exactly the above (in my question's Title) means? This is taken directly from the SpreeCommerce.com project: If you’re an experienced Rails developer you may be wondering where your app directory is. Spree actually runs as an embedded Rails app inside of your gem. How do you customize things then? We’ll cover that later in extensions. Source: http://spreecommerce.com/documentation/getting_started.html Can someone further explain what exactly it means when a Rails app is run "inside of your gem"

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  • python / sets / dictionary / initialization

    - by Mario D
    Can someone explain help me understand how the this bit of code works? Particularly how the myHeap assignment works. I know the freq variable is assigned as a dictionary. But what about my myHeap? is it a Set? exe_Data = { 'e' : 0.124167, 't' : 0.0969225, 'a' : 0.0820011, 'i' : 0.0768052, } freq = exe_Data) myHeap = [[pct, [symbol, ""]] for symbol, pct in freq.items()]

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  • MySQL won't use index for query?

    - by Jack Sleight
    I have this table: CREATE TABLE `point` ( `id` INT(11) NOT NULL AUTO_INCREMENT, `siteid` INT(11) NOT NULL, `lft` INT(11) DEFAULT NULL, `rgt` INT(11) DEFAULT NULL, `level` SMALLINT(6) DEFAULT NULL, PRIMARY KEY (`id`), KEY `point_siteid_site_id` (`siteid`), CONSTRAINT `point_siteid_site_id` FOREIGN KEY (`siteid`) REFERENCES `site` (`id`) ON DELETE CASCADE ) ENGINE=INNODB AUTO_INCREMENT=35 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci And this query: SELECT * FROM `point` WHERE siteid = 1; Which results in this EXPLAIN information: +----+-------------+-------+------+----------------------+------+---------+------+------+-------------+ | id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra | +----+-------------+-------+------+----------------------+------+---------+------+------+-------------+ | 1 | SIMPLE | point | ALL | point_siteid_site_id | NULL | NULL | NULL | 6 | Using where | +----+-------------+-------+------+----------------------+------+---------+------+------+-------------+ Question is, why isn't the query using the point_siteid_site_id index?

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  • How to install Windows 8 in a system which has Ubuntu 12.04 and Windows 7 installed already?

    - by Vignesh Palani
    I have a system in which I have installed Windows 7 first. I then installed Ubuntu 12.04 to the system. Now, the boot manager is GRUB Loader and everything works fine as Ubuntu detected that Windows 7 has been installed already. Now, I would like to install Windows 8 too. I plan to install using a bootable USB stick(doesn't matter which medium I prefer though. Does it? ). I have done some research and all the materials I can get state that I cannot practically install Windows 8 after Ubuntu and get all the three OSs to run. Can you help? I want all the three Operating systems to work perfectly.

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  • What Controller/Action will this go to?

    - by rkrauter
    Assume this is the first route entry: routes.MapRoute( "myRoute", "employees/{city}/{pageNumber}", new { controller="Employees", action = "List", pageNumber = 1 } ); If I make the following request employees/london/2 it gets matched to the following action method: public ActionResult List(string city) {} How did that happen? I did not specify "city" in my object defaults: new { controller="Employees", action = "List", pageNumber = 1 } Please explain. Thanks!

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  • Need hard disk recommendation for linux home server.

    - by neotracker
    Hello, I'm planing to build a little linux homeserver. It will mainly be used for storage and maybe as an media pc. I plan to build a software raid5 with 4 1.5TB or 2TB hard drives. I already decided to use the Western Digital Caviar Green 1.5 TB drive, but then I read about some problems with the WD green series about many drives failing and that they are not recommended for raid anyway. Of course, I couldn't find much facts on the issues so I thought I just ask here ;-) What hard drives would you recommended for a software raid5 setup? As I only need it for storage, the whole thing doesn't have to be too fast. So I prefer a cheap price and silence to great performance.

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  • Moving the Windows Workflow database: safe enough?

    - by Chris
    We have a Windows Workflow service that is running in the IIS context and persisting to a database in between hydrates. It has the Tracking Service turned on, as well. We're looking to move the database to another server, and I wanted to make sure there are no gotchas in doing so. My current plan would just be to spin down IIS to stop all activity, back up the database, migrate the database, then flip connection strings in my application to point to the new one. My main concern was if existing workflows somehow need to stay on the same database or not, or if some activity needs to happen for them to work after the move. I wouldn't think so, but just planning ahead.

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  • Does Java have a .new operator?

    - by chickeninabiscuit
    I came across this code today whilst reading Accelerated GWT (Gupta) - page 151. public static void getListOfBooks(String category, BookStore bookStore) { serviceInstance.getBooks(category, bookStore.new BookListUpdaterCallback()); } public static void storeOrder(List books, String userName, BookStore bookStore) { serviceInstance.storeOrder(books, userName, bookStore.new StoreOrderCallback()); } What are those new operators doing there? I've never seen such syntax, can anyone explain?

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  • Choosing a home network layout

    - by James M.
    I have a server, 4 PC's, a network printer, a switch and an ADSL modem. Currently the server runs Red Hat 9 and sits between the internet and the other PCs like in http://upload.wikimedia.org/wikipedia/en/1/12/Sample-network-diagram.png I have bought a new server PC to replace the old one, and I plan to install Fedora Core linux on it. The server acts as web and file server. The PCs all run Windows. Alternatively, I could connect the new server and all PCs to the switch, and connect the switch to the modem. (Sorry, couldn't find an image.) What are the pros and cons of these network layouts? Eg. in terms of reliability, security and flexibility? I am not a Linux guru but know of (and am not afraid of) iptables, dhcpd et al. Thank you for any tips, pointers and links.

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  • Rookie file permissions question

    - by Camran
    What is the ending 'r' for and the leading 'd' for in file permissions on Linux? Example: drwxr-xr-x I know about the user, group, others part, and I know w=write, r=read, x=execute. But I don't know about the leading 'd' and the trailing 'r'. Care to explain? Thanks

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  • IoC and DI framework for .Net applications

    - by Lijo
    Hi Can you please explain how the following three are different in their intent? 1) Policy Injection Application Block 2) Structure Map IoC Managed 3) Managed Extensibility Framework In terms of the common tasks they do, which is simpler/aligned with generics and C# 3.0 ? Thanks Lijo

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  • SEO Help with Pages Indexed by Google

    - by Joe Majewski
    I'm working on optimizing my site for Google's search engine, and lately I've noticed that when doing a "site:www.joemajewski.com" query, I get results for pages that shouldn't be indexed at all. Let's take a look at this page, for example: http://www.joemajewski.com/wow/profile.php?id=3 I created my own CMS, and this is simply a breakdown of user id #3's statistics, which I noticed is indexed by Google, although it shouldn't be. I understand that it takes some time before Google's results reflect accurately on my site's content, but this has been improperly indexed for nearly six months now. Here are the precautions that I have taken: My robots.txt file has a line like this: Disallow: /wow/profile.php* When running the url through Google Webmaster Tools, it indicates that I did, indeed, correctly create the disallow command. It did state, however, that a page that doesn't get crawled may still get displayed in the search results if it's being linked to. Thus, I took one more precaution. In the source code I included the following meta data: <meta name="robots" content="noindex,follow" /> I am assuming that follow means to use the page when calculating PageRank, etc, and the noindex tells Google to not display the page in the search results. This page, profile.php, is used to take the $_GET['id'] and find the corresponding registered user. It displays a bit of information about that user, but is in no way relevant enough to warrant a display in the search results, so that is why I am trying to stop Google from indexing it. This is not the only page Google is indexing that I would like removed. I also have a WordPress blog, and there are many category pages, tag pages, and archive pages that I would like removed, and am doing the same procedures to attempt to remove them. Can someone explain how to get pages removed from Google's search results, and possibly some criteria that should help determine what types of pages that I don't want indexed. In terms of my WordPress blog, the only pages that I truly want indexed are my articles. Everything else I have tried to block, with little luck from Google. Can someone also explain why it's bad to have pages indexed that don't provide any new or relevant content, such as pages for WordPress tags or categories, which are clearly never going to receive traffic from Google. Thanks!

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  • Which file system to choose from when formatting 1.5TB hard drive (hdd)

    - by MaxiWheat
    I plan to buy a 1.5TB hard drive soon. I would like to know which file system to choose from when I'm gonna format it. With FAT32, there is a limitation concerning the maximum file size (4GB) that bugs me since I might save large files such as DVD images which are over 4GB. On the other hand, NTFS allows me to save larger files, but seems less compatible with other OS than Windows and is also proprietary to Microsoft. Are there other alternatives ? Can you give me your advices ?

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  • Understanding max JVM heap size

    - by Marcus
    I've read the max heap size on 32bit Windows is ~1.5GB which is due to the fact that the JVM requires contiguous memory. Can someone explain the concept of "contiguous memory" and why you only have max 1.5GB on Windows? Secondly, what then is the max heap size on 64 bit Windows and why is this different than what's available on 32 bit?

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  • Languages for implementing decision trees

    - by Shailesh Tainwala
    What would be a good choice of programming language in which to implement a decision tree? The results of the implementation will be for personal use only, so no need to consider ability to publish etc. I have heard that Octave is a good option, can anyone explain why a matrix based language is recommended for implementing decision trees?

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