Jairo Cetina

To choose a Processor for you server is very important analyze: the quantity of Cores, FSB (Front-Side Bus) or QPI (Intel QuickPath Interconnect), MTOPS (million theoretical operations per second) and GFLOPS (Giga Floating Point Operations Per Second). Now we can choose the best processor in this link: http://www.intel.com/support/sp/mt/mt_win.htm or http://www.intel.com/support/processors/xeon/sb/CS-020863.htm Actually my favorite processor is X5680 because have a great performance, low cost and wonderful features in virtualizations infrastructures. If any link is broken please search in Google: Intel Processor Metrics.

When you try to install VMware vCenter 4.1 can receive the following error: Error 1718. File FileName was rejected by digital signature policy. Additionally, the following event may be logged in the Application log: Type: Error Source: MsiInstaller Category: None Event ID: 1008 Date: Date Time: Time User: Na Computer: ComputerName Description: The installation of FileName is not permitted due to an error in software restriction policy processing. The object cannot be trusted. Resolution: Use this fix Download the Update for Windows Server 2003 x64 Edition (KB925336) package now or See the Microsoft KB http://support.microsoft.com/kb/925336/en-us

The service did not respond to the start or control request in a timely fashion, you need administrator privileges to be able to start/stop this service. (SQLSAC) The problem i am sign in as an administrator account to resolve this issue. When I check the application log, I got the following error: Event Type: Error Event Source: MSSQLSERVER Event Category: (2) Event ID: 17049 Date: 12/16/2008 Time: 3:24:03 PM User: N/A Computer: SV06 Description: Unable to cycle error log file from 'C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\LOG\ERRORLOG.1' to 'C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\LOG\ERRORLOG.2' due to OS error '5(Access is denied.)'. A process outside of SQL Server may be preventing SQL Server from reading the files. As a result, errorlog entries may be lost and it may not be possible to view some SQL Server errorlogs. Make sure no other processes have locked the file with write-only access." F...

If there's a version of the .NET Framework present (check if the .NET Framework is installed) then we can move on to the next step of testing the script below to make sure that everything is functioning correctly. IIS on installation creates a folder called ‘Inetpub’ on your hard drive, under Inetpub there is another folder called ‘wwwroot’. The wwwroot folder is the root folder for your website. By default the folders are placed on your C drive, C:\Inetpub\wwwroot. You can copy the code below into a new file called 'test.aspx' and place in the wwwroot folder. <%@ Page Language="VB" %> <script runat="server">     Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)         lblVersion.Text = "Your server is running ASP.NET and the version is " & System.Environment.Version.ToString()     End Sub </script> <html...

If you install the .NET Framework on a system that has IIS already installed, IIS is automatically configured to handle requests to ASP.NET pages, and to redirect the execution to the ASP.NET runtime. However, it may happen that you installed the framework on a Windows system where IIS was not already present, and just later decided to add IIS. Registering ASP.NET on IIS is not just a matter of associating the various .aspx, .asmx, .axd, .ashx and the other ASP.NET extensions to the aspnet_isapi.dll ISAPI, more has to be done to create the ASP.NET account and to set it for ASP.NET requests, register the ISAPI itself and other stuff. Doing all this manually can be a difficult operation, and requires a good understanding of many details. Fortunately there is an utility, shipped with the .NET Framework but not documented, that can take care of these configuration chores for you. The utility is aspnet_regiis.exe, it is located under %WindowsDir%\Microsoft.NET\Framework\vx.y.zzzz\ and you s...

To test our DNS from internet we can use NSLOOKUP or use Online Tools. http://www.checkdns.net/quickcheckdomainf.aspx Use the CheckDNS.net analyzer to: Check if your domain has appropriate DNS servers delegated See if your DNS servers are alive Test if your hosting service is functioning Verify if your DNS servers server the zone corresponding to your domain Make out if all DNS servers have the same zone version Check if your WWW-Web server is running Verify if your hosting service is alive Test if your mail server is receiving emails Check if how many backup MX servers are configured within your zone Test if these backup servers are functioning in case your primary MX is down Validate if your backup mail server rejects your email in case of a failure because of an not optimal configured open relay restriction Check your SOA record Test if all your WWW-Server clustered nodes are up and running with DNS round robin Web-Tool to get a full report to check i...

Create a DSN in computer from you edit Domain GPOs, use Data Sources (OBDC) Tool. Add in GPO a New DSN and chose you created DSN.    Search in Domain controller a file named DataSources.XML for example: \\MyDomain.loc\SysVol\MyDomain.loc\Policies\{1A6B002C-E96E-4EEC-980B-F6EAEF6A4AF3}\User\Preferences\DataSources\DataSources.XML Open DataSources.XML in NOTEPAD with Administrative privileges and delete RED TEXT, for example: <?xml version="1.0" encoding="utf-8"?> <DataSources clsid="{380F820F-F21B-41ac-A3CC-24D4F80F067B}"><DataSource clsid="{5C209626-D820-4d69-8D50-1FACD6214488}" name="Test" image="0" changed="2010-08-10 17:08:41" uid="{F377E134-DAE7-4FE3-8366-4C7720F3FE64}" userContext="1" removePolicy="0"><Properties action="C" userDSN="1" dsn="Test" driver="SQL Server" description="...

Some months ago. I Make a Job in Task Scheduler to Backup a Bare Metal Domain Controller in Windows Server 2008 R2, I hope that this steps can help you to Backups your servers: Add Windows backup Features with Command-line Tools from Server Manager. Create a bath with following lines: ;Made folder with current date in a shared folder MD \\ServerName\ShareFolderBackups\ServerToBackup\Monthly%date:~-4,4%%date:~-7,2%%date:~-10,2% ;Start a backup from command-line WBADMIN start backup -BackupTarget: \\ServerName\ShareFolderBackups\ServerToBackup\Monthly%date:~-4,4%%date:~-7,2%%date:~-10,2% -allcritical –Quiet Create a Job in Task Scheduler to execute our .bat file. Test your Backup and see progress or result in Windows Server Backup Snap-in. NOTE: If you need execute the task with a non-administrative account you can modify local or domain GPO for add it account to “Log on as a batch job” policy. More Info: Write in comments.

VMware publish your first video covering vSphere 4.1 is now live. The video compliments KB article 1022137 vSphere 4.1 upgrade pre-installation requirements and considerations . and describes the process for using our Data Migration tool to upgrade VMware vCenter Server 4.1 VMware vCenter 4.1 is part of the VMware vSphere 4.1 product suite and the Data Migration tool allows you to migrate your vCenter Server 4.0 configuration, since VMware has now entirely gone to a 64-bit platform. 64-bit brings significant performance benefits, but it also introduces some challenges that need to be considered before upgrading. How to upgrade to VMware vCenter Server 4.1 using the Data Migration tool The Data Migration tool is provided with your vCenter Server 4.1 installation media. More Info: http://blogs.vmware.com/kbtv/2010/07/how-to-upgrade-to-vmware-vcenter-server-41-using-the-data-migration-tool.html http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=...

Sometimes our mail server are report in spam or blacklist. To solve this issue, we can to create a SPF (Sender Policy Framework) that is an e-mail validation system designed to prevent e-mail spam by tackling source address spoofing, a common vulnerability. SPF allows administrators to specify which hosts are allowed to send e-mail from a given domain by creating a specific SPF record in the public Domain Name System (DNS). Mail exchangers then use the DNS to check that mail from a given domain is being sent by a host sanctioned by that domain's administrators. In internet exist many SPF Record Wizard for example: http://www.microsoft.com/mscorp/safety/content/technologies/senderid/wizard/ http://www.openspf.org/ When you finish the wizard create a TXT record in your DNS Server with all information show in wizard results, for example in windows: