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  • Developing Freecell Game Using Silverlight 3 Part 2

    In the two parts of series, we are going to develop another Silverlight 3 based Freecell game like the one shipped with Microsoft Windows. Our main purpose to write this game is to continue to explore the mouse related operations supported in Silverlight 3. And also, in constructing this application you will learn the Silverlight 3-supported behavior related topics.

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  • Ubuntu 10.04: Check IMAP with Nagios

    <b>BeginLinux: </b>"You will probably want to check to see if your IMAP server is working properly. There are several plugins that are options. These two options presented next are straightforward and easy to use. One plugin for IMAP and one plugin for IMAPS."

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  • Should I use SDL_Surface or SDL_Window? [on hold]

    - by The Light Spark
    I am making an OpenGL game basically. I have just started out on the territory. I have seen tutorials which use an SDL_Surface for rendering to while other tutorials use SDL_Window and obtain an openGL context from that and render to that, with no mention of surfaces. I understand what the differences between the two are, but is there any advantage in using one over the other? Can I use the SDL_Window technique to create high quality games or does the SDL_Surface approach get me better results?

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  • Bordeaux 2.0.4 - Hands on Review

    <b>Thoughts on Technology:</b> "I think Crossover is fantastic software, but with Cedega pretty much being dead where is the choice in commercial Wine software? Lesser known than the two previously mentioned is Bordeaux."

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  • SEO Copywriting - Embracing Google's Mayday Update

    SEO copywriting has changed dramatically over the past two or three years. Then, it was all meta tags and keyword density. Now, SEO copywriting is more about quality inbound links and useful content that reads smoothly. Google's 2010 Mayday algorithm update also emphasises quality content at the expense of 'long-tail keywords' whose demise is spelt in a single, simple term: 'irrelevance'.

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  • Kinds of Keywords

    One of the most important element in your blog or website is keyword. With proper use, this element will surely put you in higher rankings and it will surely generate more traffic. But before anything else, let's take a look at the two kinds of keywords.

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  • Followup: Python 2.6, 3 abstract base class misunderstanding

    - by Aaron
    I asked a question at Python 2.6, 3 abstract base class misunderstanding. My problem was that python abstract base classes didn't work quite the way I expected them to. There was some discussion in the comments about why I would want to use ABCs at all, and Alex Martelli provided an excellent answer on why my use didn't work and how to accomplish what I wanted. Here I'd like to address why one might want to use ABCs, and show my test code implementation based on Alex's answer. tl;dr: Code after the 16th paragraph. In the discussion on the original post, statements were made along the lines that you don't need ABCs in Python, and that ABCs don't do anything and are therefore not real classes; they're merely interface definitions. An abstract base class is just a tool in your tool box. It's a design tool that's been around for many years, and a programming tool that is explicitly available in many programming languages. It can be implemented manually in languages that don't provide it. An ABC is always a real class, even when it doesn't do anything but define an interface, because specifying the interface is what an ABC does. If that was all an ABC could do, that would be enough reason to have it in your toolbox, but in Python and some other languages they can do more. The basic reason to use an ABC is when you have a number of classes that all do the same thing (have the same interface) but do it differently, and you want to guarantee that that complete interface is implemented in all objects. A user of your classes can rely on the interface being completely implemented in all classes. You can maintain this guarantee manually. Over time you may succeed. Or you might forget something. Before Python had ABCs you could guarantee it semi-manually, by throwing NotImplementedError in all the base class's interface methods; you must implement these methods in derived classes. This is only a partial solution, because you can still instantiate such a base class. A more complete solution is to use ABCs as provided in Python 2.6 and above. Template methods and other wrinkles and patterns are ideas whose implementation can be made easier with full-citizen ABCs. Another idea in the comments was that Python doesn't need ABCs (understood as a class that only defines an interface) because it has multiple inheritance. The implied reference there seems to be Java and its single inheritance. In Java you "get around" single inheritance by inheriting from one or more interfaces. Java uses the word "interface" in two ways. A "Java interface" is a class with method signatures but no implementations. The methods are the interface's "interface" in the more general, non-Java sense of the word. Yes, Python has multiple inheritance, so you don't need Java-like "interfaces" (ABCs) merely to provide sets of interface methods to a class. But that's not the only reason in software development to use ABCs. Most generally, you use an ABC to specify an interface (set of methods) that will likely be implemented differently in different derived classes, yet that all derived classes must have. Additionally, there may be no sensible default implementation for the base class to provide. Finally, even an ABC with almost no interface is still useful. We use something like it when we have multiple except clauses for a try. Many exceptions have exactly the same interface, with only two differences: the exception's string value, and the actual class of the exception. In many exception clauses we use nothing about the exception except its class to decide what to do; catching one type of exception we do one thing, and another except clause catching a different exception does another thing. According to the exception module's doc page, BaseException is not intended to be derived by any user defined exceptions. If ABCs had been a first class Python concept from the beginning, it's easy to imagine BaseException being specified as an ABC. But enough of that. Here's some 2.6 code that demonstrates how to use ABCs, and how to specify a list-like ABC. Examples are run in ipython, which I like much better than the python shell for day to day work; I only wish it was available for python3. Your basic 2.6 ABC: from abc import ABCMeta, abstractmethod class Super(): __metaclass__ = ABCMeta @abstractmethod def method1(self): pass Test it (in ipython, python shell would be similar): In [2]: a = Super() --------------------------------------------------------------------------- TypeError Traceback (most recent call last) /home/aaron/projects/test/<ipython console> in <module>() TypeError: Can't instantiate abstract class Super with abstract methods method1 Notice the end of the last line, where the TypeError exception tells us that method1 has not been implemented ("abstract methods method1"). That was the method designated as @abstractmethod in the preceding code. Create a subclass that inherits Super, implement method1 in the subclass and you're done. My problem, which caused me to ask the original question, was how to specify an ABC that itself defines a list interface. My naive solution was to make an ABC as above, and in the inheritance parentheses say (list). My assumption was that the class would still be abstract (can't instantiate it), and would be a list. That was wrong; inheriting from list made the class concrete, despite the abstract bits in the class definition. Alex suggested inheriting from collections.MutableSequence, which is abstract (and so doesn't make the class concrete) and list-like. I used collections.Sequence, which is also abstract but has a shorter interface and so was quicker to implement. First, Super derived from Sequence, with nothing extra: from abc import abstractmethod from collections import Sequence class Super(Sequence): pass Test it: In [6]: a = Super() --------------------------------------------------------------------------- TypeError Traceback (most recent call last) /home/aaron/projects/test/<ipython console> in <module>() TypeError: Can't instantiate abstract class Super with abstract methods __getitem__, __len__ We can't instantiate it. A list-like full-citizen ABC; yea! Again, notice in the last line that TypeError tells us why we can't instantiate it: __getitem__ and __len__ are abstract methods. They come from collections.Sequence. But, I want a bunch of subclasses that all act like immutable lists (which collections.Sequence essentially is), and that have their own implementations of my added interface methods. In particular, I don't want to implement my own list code, Python already did that for me. So first, let's implement the missing Sequence methods, in terms of Python's list type, so that all subclasses act as lists (Sequences). First let's see the signatures of the missing abstract methods: In [12]: help(Sequence.__getitem__) Help on method __getitem__ in module _abcoll: __getitem__(self, index) unbound _abcoll.Sequence method (END) In [14]: help(Sequence.__len__) Help on method __len__ in module _abcoll: __len__(self) unbound _abcoll.Sequence method (END) __getitem__ takes an index, and __len__ takes nothing. And the implementation (so far) is: from abc import abstractmethod from collections import Sequence class Super(Sequence): # Gives us a list member for ABC methods to use. def __init__(self): self._list = [] # Abstract method in Sequence, implemented in terms of list. def __getitem__(self, index): return self._list.__getitem__(index) # Abstract method in Sequence, implemented in terms of list. def __len__(self): return self._list.__len__() # Not required. Makes printing behave like a list. def __repr__(self): return self._list.__repr__() Test it: In [34]: a = Super() In [35]: a Out[35]: [] In [36]: print a [] In [37]: len(a) Out[37]: 0 In [38]: a[0] --------------------------------------------------------------------------- IndexError Traceback (most recent call last) /home/aaron/projects/test/<ipython console> in <module>() /home/aaron/projects/test/test.py in __getitem__(self, index) 10 # Abstract method in Sequence, implemented in terms of list. 11 def __getitem__(self, index): ---> 12 return self._list.__getitem__(index) 13 14 # Abstract method in Sequence, implemented in terms of list. IndexError: list index out of range Just like a list. It's not abstract (for the moment) because we implemented both of Sequence's abstract methods. Now I want to add my bit of interface, which will be abstract in Super and therefore required to implement in any subclasses. And we'll cut to the chase and add subclasses that inherit from our ABC Super. from abc import abstractmethod from collections import Sequence class Super(Sequence): # Gives us a list member for ABC methods to use. def __init__(self): self._list = [] # Abstract method in Sequence, implemented in terms of list. def __getitem__(self, index): return self._list.__getitem__(index) # Abstract method in Sequence, implemented in terms of list. def __len__(self): return self._list.__len__() # Not required. Makes printing behave like a list. def __repr__(self): return self._list.__repr__() @abstractmethod def method1(): pass class Sub0(Super): pass class Sub1(Super): def __init__(self): self._list = [1, 2, 3] def method1(self): return [x**2 for x in self._list] def method2(self): return [x/2.0 for x in self._list] class Sub2(Super): def __init__(self): self._list = [10, 20, 30, 40] def method1(self): return [x+2 for x in self._list] We've added a new abstract method to Super, method1. This makes Super abstract again. A new class Sub0 which inherits from Super but does not implement method1, so it's also an ABC. Two new classes Sub1 and Sub2, which both inherit from Super. They both implement method1 from Super, so they're not abstract. Both implementations of method1 are different. Sub1 and Sub2 also both initialize themselves differently; in real life they might initialize themselves wildly differently. So you have two subclasses which both "is a" Super (they both implement Super's required interface) although their implementations are different. Also remember that Super, although an ABC, provides four non-abstract methods. So Super provides two things to subclasses: an implementation of collections.Sequence, and an additional abstract interface (the one abstract method) that subclasses must implement. Also, class Sub1 implements an additional method, method2, which is not part of Super's interface. Sub1 "is a" Super, but it also has additional capabilities. Test it: In [52]: a = Super() --------------------------------------------------------------------------- TypeError Traceback (most recent call last) /home/aaron/projects/test/<ipython console> in <module>() TypeError: Can't instantiate abstract class Super with abstract methods method1 In [53]: a = Sub0() --------------------------------------------------------------------------- TypeError Traceback (most recent call last) /home/aaron/projects/test/<ipython console> in <module>() TypeError: Can't instantiate abstract class Sub0 with abstract methods method1 In [54]: a = Sub1() In [55]: a Out[55]: [1, 2, 3] In [56]: b = Sub2() In [57]: b Out[57]: [10, 20, 30, 40] In [58]: print a, b [1, 2, 3] [10, 20, 30, 40] In [59]: a, b Out[59]: ([1, 2, 3], [10, 20, 30, 40]) In [60]: a.method1() Out[60]: [1, 4, 9] In [61]: b.method1() Out[61]: [12, 22, 32, 42] In [62]: a.method2() Out[62]: [0.5, 1.0, 1.5] [63]: a[:2] Out[63]: [1, 2] In [64]: a[0] = 5 --------------------------------------------------------------------------- TypeError Traceback (most recent call last) /home/aaron/projects/test/<ipython console> in <module>() TypeError: 'Sub1' object does not support item assignment Super and Sub0 are abstract and can't be instantiated (lines 52 and 53). Sub1 and Sub2 are concrete and have an immutable Sequence interface (54 through 59). Sub1 and Sub2 are instantiated differently, and their method1 implementations are different (60, 61). Sub1 includes an additional method2, beyond what's required by Super (62). Any concrete Super acts like a list/Sequence (63). A collections.Sequence is immutable (64). Finally, a wart: In [65]: a._list Out[65]: [1, 2, 3] In [66]: a._list = [] In [67]: a Out[67]: [] Super._list is spelled with a single underscore. Double underscore would have protected it from this last bit, but would have broken the implementation of methods in subclasses. Not sure why; I think because double underscore is private, and private means private. So ultimately this whole scheme relies on a gentleman's agreement not to reach in and muck with Super._list directly, as in line 65 above. Would love to know if there's a safer way to do that.

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  • Windows web server and SQL Server on same dedicated server

    - by asinc
    I'm currently trying to decide on the best approach to handle hosting a few moderate traffic websites for production e-commerce and online applications. We'd like to move to a dedicated server and are looking at this as the most likely machine: Quad Core Intel Core2Quad Q9550 Processor, 2.83 Ghz X 4, 4 GB Kingston Ram This would run Windows Web Server 2008 R2 x64 and potentially also Sql Server Web 2008 and SmarterMail server. Given that we already pay for a high-end VPS for development, testing, shared version control we'd like to avoid going with two servers for production. We'd like to avoid using shared sql server hosting and have thought of using the development server as the database server as an option too - but potentially a security risk due to use for development by internal and contract users. The questions are: - Do you feel there would be performance degradation by running this on the same machine? - Are there significant issues to be concerned about if we do this? We understand that best practice would be to run separate db and app servers but the volume of traffic is currently not that high and adding another server just for database is currently too costly. - What are others doing out there? Alternatively, would you recommend instead going with two separate VPS servers with 2GB RAM each on Hyper-v which would be about the same cost as the single dedicated server above? Thanks!

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  • Varnish 3.0.2 and ISPConfig 3.0.4

    - by Warren Bullock III
    I followed the tutorial The Perfect Server - Ubuntu 11.10 [ISPConfig 3] here. I'm running an Ubuntu 11.04 (Natty Narwhal) server with 1024 RAM on Rackspace. I've gone through and updated to ISPConfig 3.0.4. Everything has been working great up to now when I decided to try and install Varnish. Initially I did an install of Varnish by issuing: apt-get update apt-get upgrade apt-get install varnish Apparently the version that was installed was Varnish 2.x so I went back and added the repositories for packages provided by varnish-cache.org curl http://repo.varnish-cache.org/debian/GPG-key.txt | apt-key add - echo "deb http://repo.varnish-cache.org/ubuntu/ lucid varnish-3.0" >> /etc/apt/sources.list apt-get update apt-get install varnish This updated my version of Varnish to 3.0.2 I then proceeded to make the following changes: vim /etc/default/varnish change DAEMON_OPTS to port 80: vim /etc/apache2/ports.conf NameVirtualHost *:8000 Listen 8000 vim /etc/apache2/sites-available/default <VirtualHost *:8000> vim /etc/apache2/sites-available/ispconfig.vhost Listen 8080 NameVirtualHost *:8080 <VirtualHost _default_:8080> I then proceeded to set my other vhosts to use 8000 (the apache2 port) so with all this set I reset both Apache2 and Varnish to test. I used Firebug in Firefox 11.0 The output from what I see doesn't seem to indicate that Varnish is working completely correct: First of all I see: X-Varnish 1644834493 but I've heard that unless you have two timestamps side by side than it's probably not working correctly so for example I was thinking I might see something like: X-Varnish 1644834493 1644837493 Also if I noticed this in the output which seems to be inconstant: X-Drupal-Cache MISS There are times when it will say HIT as well.... So the question here that I have is I think Varnish is partially working, however, why don't I see two timestamps on X-Varnish like I'm thinking I should and does the output of the screenshot I have look correct? If Varnish isn't working can someone tell me what I might being doing wrong? Thanks in advance.

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  • Adaptec 6405 RAID controller turned on red LED

    - by nn4l
    I have a server with an Adaptec 6405 RAID controller and 4 disks in a RAID 5 configuration. Staff in the data center called me because they noticed a red LED was turned on in one of the drive bays. I have then checked the status using 'arcconf getconfig 1' and I got the status message 'Logical devices/Failed/Degraded: 2/0/1'. The status of the logical devices was listed as 'Rebuilding'. However, I did not get any suspicious status of the affected physical device, the S.M.A.R.T. setting was 'no', the S.M.A.R.T. warnings were '0' and also 'arcconf getsmartstatus 1' returned no problems with any of the disk drives. The 'arcconf getlogs 1 events tabular' command gives lots of output (sorry, can't paste the log file here as I only have remote console access, I could post a screenshot though). Here are some sample entries: eventtype FSA_EM_EXPANDED_EVENT grouptype FSA_EXE_SCSI_GROUP subtype FSA_EXE_SCSI_SENSE_DATA subtypecode 12 cdb 28 00 17 c4 74 00 00 02 00 00 00 00 data 70 00 06 00 00 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 00 0 The 'arcconf getlogs 1 device tabular' command reports mediumErrors 1 for two of the disks. Today, I have checked the status of the controller again. Everything is back to normal, the controller status is now 'Logical devices/Failed/Degraded: 2/0/0', the logical devices are also all back to 'Optimal'. I was not able to check the LED status, my guess is that the red LED is off again. Now I have a lot of questions: what is a possible cause for the medium error, why it is not reported by the SMART log too? Should I replace the disk drives? They were purchased just a month ago. The rebuilding process took one or two days, is that normal? The disks are 2 TByte each and the storage system is mostly idling. the timestamp of the logs seem to show the moment of the log retrieval, not the moment of the incident. Please advise, all help is very appreciated.

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  • Windows 2008, IIS7 and virtual directories

    - by Thomas
    I created a virtual directory called test (C:\test) under the Default Web Site and added two simple test files (one html and one aspx). I thought I had to add the IUSR and NetworkService (for application pools) to C:\test and grant the users appropriate rights in order for IIS7 to serve the content. It appears that is not the case at all as I can view any files in the virtual directory (even if I convert it to an application) without changing or adding any security settings on the C:\test folder. I just installed IIS7 with ASP.NET on Windows 2008 without changing any settings besides adding the virtual directory. Am I missing something? Even my book on IIS7 states that the user accounts should be added an appropriate rights should be added. I added the following to answer the comments: I am referencing the file using a public IP http://xxx.xxx.xxx.xxx/test/one.html and the IP nor localhost is in my trusted sites. I am not signed in on the server at all as I am accessing the content from my home machine and the content is on my production server. The following users/groups have access to c:\test on the server (Creator Owner, System, Administrators, Users) and the app pool is running under the default NetworkService account. I basically installed win2008, added the IIS role with asp.net. I then opened IIS7, added a virtual directory and copied two files to the directory to test. It works which is great but I want to understand why it works. How is it that IIS7 can access files in the C:\test folder without any permissions set.

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  • How do I stop Sophos anti virus from scanning directories that are under source control

    - by user26453
    From googling it seems its well known that SophosAV as well as other AV programs have issues with how they interact and can inhibit source control utilities like TortoiseHG or TortoiseSVN. One solution is to exclude directories under source control from on-access scanning as detailed here on Sophos's support site. There is a corollary article that mentions some issues related to this, namely the need to place multiple entries for exclusions based on the possibility of the location being accessed through the short vs. long name (e.g., Progra~1 vs. "Program Files"). One other twist is I am using a junction to relocate my user directory, C:\Users\Username, to a second hard drive, E:. Since I am not sure how this interacts I have included the source control directory as they are nested in both locations. As a result, I have included the two exclusions for the on-access scanning exclusions (and to be on the safe side on-demand exclusions as well, although this should only come into play when I select a parent directory of the exclusion to be scanned on-demand, but still). You'll notice I have no need to add extra exclusions for those locations based on short vs. long name distinctions. The two exclusion I have then, for both on-access and on-demand scanning exclusions are: C:\Users\Username\source-control-directory E:\source-control-directory However, this does not seem to work as TortoiseHG still lags terribly in response to any request as AV software starts scanning when the directory is accessed via TortoiseHG. I can verify without a doubt that Sophos is causing the problems: I can completely disable on-access scanning. Once this is done TortoiseHG responds very fast to all operations. I cannot leave this disabled obviously, but since the exclusion don't seem to be working, what next?

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  • Intel 1.83 Mac Mini upgraded to 1.5 gig for Snow Leopard

    - by Paula
    Even though I've upgraded countless video cards, RAM, harddrives, motherboards in PCs... this will be my first mac mini RAM upgrade. I've watched the classic "putty knife" video. (Absurd method... but I guess it's what I'm stuck with.) I have a 1.83 Intel-based Mac Mini from 2007-2008, with 1 gig of RAM. (Two 512 sticks) Can I install 1 gig + 512 ? (Or do I have to throw away my existing sticks and buy two 1 gig sticks?) This old machine is rarely used... so I want to spend the absolute minimum on this RAM upgrade. We ONLY use it to run xCode... nothing more. But wanted to increase the RAM so we can install Snow Leopard. I have no idea how many pins the memory has. I printed out over FORTY pages of specs about this machine from "About this Mac"... but didn't find what I needed. Does this sound right: DDR2 SDRAM (but no mention of SO-DIMM) 667MHZ (but don't know if I can use faster also) Pin count: Unknown Computer model number: Unknown (But I "think" it's an MB138/A) PC2 RAM (unknown... not mentioned) 5300 (unknown... not mentioned) Mfg date: (unknown... not mentioned) Number of slots: (unknown... not mentioned) Laptop or desktop RAM: (unknown... not mentioned)

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  • Cloudmin KVM DNS hostnames not working

    - by dannymcc
    I have got a new server which has Cloudmin installed. It's working well and I can create and manage VM's as expected. The server came with a /29 subnet and I requested an additional /29 subnet to allow for more virtual machines. I didn't want to replace the existing /29 subnet with a /28 because that would have caused disruption with my existing VM's. To make life easier I decided to configure a domain name for the Cloudmin host server to allow for automatic hostname setup whenever I create a new virtual machine. I have a domain name (example.com) and I have created an NS record as follows: NS kvm.example.com 123.123.123.123 A kvm.example.com 123.123.123.123 In the above example the IP address is that of the host server, I also have two /29 subnets routed to the server. Now, I've added the two subnets to the Cloudmin administration panel as follows: I've tried to hide as little information as possible without giving all of the server details away! If I ping kvm.example.com I get a response from 123.123.123.123, if I ping the newly created virtual machine (example.kvm.example.com) it fails, and if I ping the IP address that's been assigned to the new virtual machine (from the second subnet) it fails. Am I missing anything vital? Does this look (from what little information I can show) like it's setup correctly? Any help/pointers would be appreciated. For reference the Cloudmin documentation I am using as a guide is http://www.virtualmin.com/documentation/cloudmin/gettingstarted

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  • Amazon Ec2: Problem In Setting up FTP Server

    - by Muntasir
    after setting up My vsFtp Server ON Ec2 i am facing problem , my client is Filezilla and i am getting this error Response: 230 Login successful. Command: OPTS UTF8 ON Response: 200 Always in UTF8 mode. Status: Connected Status: Retrieving directory listing... Command: PWD Response: 257 "/" Command: TYPE I Response: 200 Switching to Binary mode. Command: PASV Response: 500 OOPS: invalid pasv_address Command: PORT 10,130,8,44,240,50 Response: 500 OOPS: priv_sock_get_cmd Error: Failed to retrieve directory listing Error: Connection closed by server this is the current setting in my vsftpd.conf #nopriv_user=ftpsecure #async_abor_enable=YES # ASCII mangling is a horrible feature of the protocol. #ascii_upload_enable=YES #ascii_download_enable=YES # You may specify a file of disallowed anonymous e-mail addresses. Apparently # useful for combatting certain DoS attacks. #deny_email_enable=YES # (default follows) #banned_email_file=/etc/vsftpd/banned_emails # chroot_local_user=YES #chroot_list_enable=YES # (default follows) #chroot_list_file=/etc/vsftpd/chroot_list GNU nano 2.0.6 File: /etc/vsftpd/vsftpd.conf # #ls_recurse_enable=YES # # When "listen" directive is enabled, vsftpd runs in standalone mode and # listens on IPv4 sockets. This directive cannot be used in conjunction # with the listen_ipv6 directive. listen=YES # # This directive enables listening on IPv6 sockets. To listen on IPv4 and IPv6 # sockets, you must run two copies of vsftpd with two configuration files. # Make sure, that one of the listen options is commented !! #listen_ipv6=YES pam_service_name=vsftpd userlist_enable=YES tcp_wrappers=YES pasv_enable=YES pasv_min_port=2345 pasv_max_port=2355 listen_port=1024 pasv_address=ec2-xxxxxxx.compute-1.amazonaws.com pasv_promiscuous=YES Note: i have already open those port in security group i mean listen port, min max if someone shows me how to fix this i will be very greatful thanks

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  • Can I change the file system on the OS partition on Server 2008 R2?

    - by KCotreau
    I have a client using R1Soft Continuous Data Protection backup, and two of the Server 2008 R2 boxes were erroring out with these errors: Unable to obtain NTFS volume data for device '\\?\Volume{f612849e-7125-11e0-8772-806e6f6e6963}': Incorrect function. Unable to discover information for filesytem volume '\\?\Volume{f612849e-7125-11e0-8772-806e6f6e6963}'; Unable to obtain NTFS volume So I backed up all the registry entries with this, {f612849e-7125-11e0-8772-806e6f6e6963}, in it, and deleted them based on some VERY sparse info from R1Soft. I then decided to restore them before I rebooted, and do a system state backup first using MS backup, and even it errored out saying that there were FAT32 partitions. This was a major clue as the only two computers with problems had these FAT32 partitions. I figured if MS backup can't backup something, any other program is likely to have problems. Also, now that I realized the servers had FAT32 partitions on them, the error referencing NTFS takes on more weight. The partitions on both servers have the label "OS", but on one of the computers, it is given a letter, but on the other not. So I am thinking if I just convert the file systems from FAT32 to NTFS, it may solve the backup problem. So the question is this: Can I just convert those partitions, and does anyone have any concrete knowledge of any major downsides, like the servers not coming back up (of course, I would do one at a time)? My thinking is that the answer is probably at least 95% no, but they are production servers, so I wanted to get some second opinions.

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  • ADSIEdit Cleanup After Exchange 2003 Crash During Transition To Exchange 2010

    - by ThaKidd
    Hello all. I would value some input from a few Exchange 2010 experts. I have almost completed the transition from Exchange 2003 Standard to Exchange 2010 Standard. Everything went smoothly until I tried to uninstall Exchange 2003. At that point the server bit the dust and died completely. I now have NO access to the old Exchange System Management MMC as I am running Windows 2008 SR2 and Windows 7 only. I can only fix this with ADSIEdit, EMShell, and EMConsole. I have used the 2010 shell to move/remove/verify that all mailboxes, public folders and OAB are hosted on Exchange 2010. I also verified that the routing connector has been deleted. The only two things that were not done was to remove the Recipient Update Service and actually perform the removal of the 2003 software. I have spent a lot of time going through ASDIedit and have located the old Administrative Group and the Exchange 2003 server listed under it. I also located the Recipient Update Service which includes two entries; Enterprise and my domain name. I have read that it is an unwise idea to remove the old administrative group so I won't bother messing with that. I am repeatedly getting three warnings in the Application Log. Both are from MSExchangeTransport EventID 5006 (Cannot find route to Mailbox Server OLDSERVER) and 5020 (The topology doesn't contain a route to Exchange 2000 Server or Exchange Server 2003) So my questions are: To clean out AD of the old Exchange 2003 info, can I delete the server name folder (Configuration - Services - Microsoft Exchange - ExchOrg - Administrative Groups - First Administrative Group - Servers - Old Server) and also delete the Update Recipient Service (Enterprise) and Update Recipient Service (DOMAIN) containers safely? Are there any additional items I need to address to ensure the AD is clean? Thanks in advance for your help!

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  • Can I subnet a subnet?

    - by Portman
    Apologies in advance for the botched terminology. I have read the Server Fault Subnet Wiki but this is more of an ISP question. I currently have a /27 block of public IPs. I use give my router the first address in this pool and then use 1-to-1 NAT for all the servers behind the firewall, so that they each get their own public IP. The router/firewall is currently using (actual addresses removed to protect the guilty): IP Address: XXX.XXX.XXX.164 Subnet mask: 255.255.255.224 Gateway: XXX.XXX.XXX.161 What I would like to do is break out my subnet into two separate /28 subnets. And do this in a way that is transparent to the ISP (i.e., they see me as continuing to operate a single /27). Currently, my topology looks like: ISP | [Router/Firewall] | [Managed Ethernet Switch] / \ \ [Server1] [Server2] [Server3] (etc) Instead, I would like it to look like: ISP | [Switch] / \ [Router1] [Router2] | | | | [S1] [S2] [S3] [S4] (etc) As you can see, this would partition me into two separate networks. I'm struggling with what the correct IP settings would be on Router1 and Router2. Here's what I have right now: Router1 Router2 IP Address: XXX.XXX.XXX.164 XXX.XXX.XXX.180 Subnet mask: 255.255.255.240 255.255.255.240 Gateway: XXX.XXX.XXX.161 XXX.XXX.XXX.161 Note that normally you would expect Router2 to have a gateway of .177, but I'm trying to get them both to use the gateway originally given to me by the ISP. Is subnetting like this in fact possible, or am I completely botching the most basic concepts?

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  • Indefinite hang when restoring SQL 2005 database on a SQL 2008 server in EC2

    - by erinloy
    I'm trying to restore a 25 GB database backup taken from a Windows 2003/SQL 2005 machine to a Windows 2008/SQL 2008 machine in the Amazon EC2 cloud, using a .bak file and the SQL Management Studio. SQL Management Studio reports the restore reaches 100% complete, and then just hangs indefinitely (24+ hours) using a lot of CPU, until I restart the SQL Server service. Upon restart, SQL again uses a lot of CPU activity for what seems to be an indefinite amount of time, but the DB never comes online. Here are some details: - I have created two EBS volumes, one for DATA and one for LOGS, and I have set the default directories in SQL Server to the \DATA and \LOG directory on these respective volumes. (I wonder if the issue could be related to this, but the DB is too big to restore on the root drive.) - I have given the SQL Server user group full access to these directories. - The server can create a new empty test DB in these directories just fine, and can backup and restore the test DB. - I have tried both restoring of a .bak file and attaching directly to copies of the original .mdf/.ldf files, and the result is the same in both cases. - Both the .bak restore and the .mdf/.ldf attach occur from/to the EBS volumes. - I've also tried the above via SQL script, and "WITH RECOVERY", with no difference in the result, just less UI. - The backup contains two full text indexes. - I have to use "WITH MOVE" for most of the files in the backup. - There's nothing wrong with the backup or .mdf/.ldf files, as this works just fine on a Windows 2003/SQL 2005 machine in the Amazon EC2, but not Windows 2008/SQL 2008. - The DB is NOT marked as "Restoring" in the SQL Management Studio - it is just listed as a normal database, but throws errors when I try to do anything with it (expand the object browser tree, view properties, etc.) Any ideas?

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  • What is there in Win 7 Pro (or Ultimate) that is not there in Home Premium? - Especially considering this situation..

    - by Senthil
    I want to know the REAL difference between Windows 7 Home Premium and Professional/Utimate. In India, the cost of different versions: Ultimate - 11,200 INR Professional - 10,700 INR Home Premium - 6,600 INR The absolute cost of the first two is so high to me that the difference (500 INR) doesn't matter. So to me there is really no choice between the first two - If I decide to buy the Professional version, I'd rather go for Ultimate itself. What I want to know is, whether Home Premium is enough for my needs. I tried searching for comparison but many look like just marketing junk from MS. They are short and vague. According to this page, the major differences between Pro and HomePremium are Run many Windows XP productivity programs in Windows XP Mode. Connect to company networks easily and more securely with Domain Join. You can do both in Pro but not in Home Premium. I intend to use my Windows 7 for a small business - just starting up. So I'll be dealing with the following: All kinds of development tools, servers Very important - I will run Virtual Machine Software (MS VPC or VMWare or Sun VirtualBox etc..) My system will be acting as the server for most purposes till I can afford dedicated servers. Connect the system to a variety of network devices (PCs, Printers, etc..) Run productivity, business and financial apps Any other small software startup business requirement that I haven't thought of yet. Professional (and Ultimate) is twice as expensive as Home Premium. So it'd be great if someone can point out the things you cannot do with Home Premium, when you use it like I explained above, so that I can make a decision about which one to buy. I need some real-life experiences so that I can make an informed decision - not a decision based on marketing junk.

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  • Markus Zirn, "Big Data with CEP and SOA" @ SOA, Cloud &amp; Service Technology Symposium 2012

    - by JuergenKress
    ORACLE PROMOTIONAL DISCOUNT FOR EXCLUSIVE ORACLE DISCOUNT, ENTER PROMO CODE: DJMXZ370 Early-Bird Registration is Now Open with Special Pricing! Register before July 1, 2012 to qualify for discounts. Visit the Registration page for details. The International SOA, Cloud + Service Technology Symposium is a yearly event that features the top experts and authors from around the world, providing a series of keynotes, talks, demonstrations, and panels, as well as training and certification workshops - all dedicated to empowering IT professionals to realize modern service technologies and practices in the real world. Click here for a two-page printable conference overview (PDF). Big Data with CEP and SOA - September 25, 2012 - 14:15 Speaker: Markus Zirn, Oracle and Baz Kuthi, Avocent The "Big Data" trend is driving new kinds of IT projects that process machine-generated data. Such projects store and mine using Hadoop/ Map Reduce, but they also analyze streaming data via event-driven patterns, which can be called "Fast Data" complementary to "Big Data". This session highlights how "Big Data" and "Fast Data" design patterns can be combined with SOA design principles into modern, event-driven architectures. We will describe specific architectures that combines CEP, Distributed Caching, Event-driven Network, SOA Composites, Application Development Framework, as well as Hadoop. Architecture patterns include pre-processing and filtering event streams as close as possible to the event source, in memory master data for event pattern matching, event-driven user interfaces as well as distributed event processing. Focus is on how "Fast Data" requirements are elegantly integrated into a traditional SOA architecture. Markus Zirn is Vice President of Product Management covering Oracle SOA Suite, SOA Governance, Application Integration Architecture, BPM, BPM Solutions, Complex Event Processing and UPK, an end user learning solution. He is the author of “The BPEL Cookbook” (rated best book on Services Oriented Architecture in 2007) as well as “Fusion Middleware Patterns”. Previously, he was a management consultant with Booz Allen & Hamilton’s High Tech practice in Duesseldorf as well as San Francisco and Vice President of Product Marketing at QUIQ. Mr. Zirn holds a Masters of Electrical Engineering from the University of Karlsruhe and is an alumnus of the Tripartite program, a joint European degree from the University of Karlsruhe, Germany, the University of Southampton, UK, and ESIEE, France. KEYNOTES & SPEAKERS More than 80 international subject matter experts will be speaking at the Symposium. Below are confirmed keynotes and speakers so far. Over 50% of the agenda has not yet been finalized. Many more speakers to come. View the partial program calendars on the Conference Agenda page. CONFERENCE THEMES & TRACKS Cloud Computing Architecture & Patterns New SOA & Service-Orientation Practices & Models Emerging Service Technology Innovation Service Modeling & Analysis Techniques Service Infrastructure & Virtualization Cloud-based Enterprise Architecture Business Planning for Cloud Computing Projects Real World Case Studies Semantic Web Technologies (with & without the Cloud) Governance Frameworks for SOA and/or Cloud Computing Projects Service Engineering & Service Programming Techniques Interactive Services & the Human Factor New REST & Web Services Tools & Techniques Oracle Specialized SOA & BPM Partners Oracle Specialized partners have proven their skills by certifications and customer references. To find a local Specialized partner please visit http://solutions.oracle.com SOA & BPM Partner Community For regular information on Oracle SOA Suite become a member in the SOA & BPM Partner Community for registration please visit  www.oracle.com/goto/emea/soa (OPN account required) If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Technorati Tags: Markus Zirn,SOA Symposium,Thomas Erl,SOA Community,Oracle SOA,Oracle BPM,BPM Community,OPN,Jürgen Kress

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  • Benchmarking a file server

    - by Joel Coel
    I'm working on building a new file server... a simple Windows Server box with a few terabytes of disk space to share on the LAN. Pain for current hard drive prices aside :( -- I would like to get some benchmarks for this device under load compared to our old server. The old server was installed in 2005 and had 5 136GB 10K disks in RAID 5. The new server has 8 1TB disks in two RAID 10 volumes (plus a hot spare for each volume), but they're only 7.2K rpm, and of course with a much larger cache size. I'd like to get an idea of the performance expectations of the new server relative to the old. Where do I get started? I'd like to know both raw potential under different kinds of load for each server, as well an idea of what our real-world load looks like and how it will translate. Will disk load even matter, or will performance be more driven by the network connection? I could probably fumble through some disk i/o and wait counters in performance monitor, but I don't really know what to look for, which counters to watch, or for how long and when. FWIW, I'm expecting a nice improvement because of the benefits of having two different volumes and the better RAID 10 performance vs RAID 5, in spite of using slower disks... but I'd like to get an idea of how much.

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