Sao lưu: Incremental hay Differential?

Một số các bạn có thói quan sao lưu dữ liệu (backup) – vậy thì quá tốt – bởi vì tôi đã gặp rất nhiều người hỏi cùng 1 câu hỏi: làm sao cứu dữ liệu của tôi – 80% đã quá trễ, 20% tốn từ 2tr đến 4tr để cứu những gì có thể cứu được. Do vậy, “backup or die”. Các bạn nếu có dùng phần mềm backup sẽ hay nghe nói phần mềm này rất chuyên nghiệp, có tính năng backup “Incremental” và “Differential”. Vậy thì 2 thuật ngữ này là gì? Về cơ bản, có 3 phương pháp backup: Full, Differential, và Incremental. 1. Full backup Tên như người – nghĩa là backup tất cả Ví dụ minh họa: Bạn có 1 file text A.txt nội dung là 1 2 3 4 Bạn cấu hình Full backup hằng ngày vào buổi tối – phần mềm backup sẽ sao lưu y chang File đó mỗi ngày Lợi điểm: Dễ phục hồi dữ liệu (restore). Ví...

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Posted in: Backup

SBS 2008 Using the POP Connector

To access the Windows Small Business Server POP3 Connector properties Open the Windows SBS Console. On the navigation bar, click Network. Click the Connectivity tab. The list view displays information about your network connections. In the list view, click POP3 Connector. In the Tasks pane, click View POP3 Connector properties. To view error messages for the POP3 Connector Click Start, type eventvwr, and then press ENTER. In the console tree, expand Applications and Service Logs. Expand Windows Small Business Server 2008, and then select Microsoft Windows Small Business Server/Operational. The details pane displays error and event messages for Windows SBS 2008 including error messages...

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Posted in: Exchange

How to increase the Exchange Server 2003 Service Pack 2 database size limit

Link to original Microsoft article: http://support.microsoft.com/kb/912375/ How to increase the Exchange Server 2003 Service Pack 2 database size limit To increase the Exchange Server 2003 SP2 database size, follow these steps. Important Before you increase the maximum size of an Exchange database, verify that sufficient hard disk space is available for the larger database. On the computer that is running Exchange 2003 SP2, click Start, click Run, type regedit, and then click OK. Click one of the following registry subkeys, as appropriate for the store that you want to increase: For a mailbox store, click the following registry subkey: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\Server name\Private-Mailbox Store GUID For a public folder store,...

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Fix Outlook 2007 Certificate Errors

For SBS 2008 run the following commands in Exchange Management Shell: Set-ClientAccessServer -Identity yourserver -AutodiscoverServiceInternalUri https://external.yourdomain.com/autodiscover/autodiscover.xml Set-WebServicesVirtualDirectory -Identity “yourserver\EWS (SBS Web Applications)” -InternalUrl https://external.yourdomain.com/ews/exchange.asmx Set-OABVirtualDirectory -Identity “yourserver\oab (SBS Web Applications)” -InternalUrl https://external.yourdomain.com/oab Set-UMVirtualDirectory -Identity “yourserver\unifiedmessaging (SBS Web Applications)” -InternalUrl https://external.yourdomain.com/unifiedmessaging/service.asmx For Exchange 2007 Standard or Enterprise on Windows Server 2008 run the following commands in Exchange Management Shell: Set-ClientAccessServer -Identity yourserver -AutodiscoverServiceInternalUri https://external.yourdomain.com/autodiscover/autodiscover.xml Set-WebServicesVirtualDirectory...

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Posted in: Exchange,Outlook

Exchange 2007 Autodiscover Issues

Exchange 2007 Autodiscover Issues We have recently begun installing a lot of Exchange 2007 servers, both Exchange 2007 standard and as part of SBS 2008. Starting with Exchange 2003 there is a lot of reliance on the web services part of the server which reside in IIS. In order to get things working properly we get a SSL certificate, usually from GoDaddy, to secure the exchange directories. This allows us to set up devices with Exchange Activesync, OWA without certificate warnings, and Outlook Anywhere. We’ve noticed that when installing these certificates, Outlook clients on the domain begin to see a certificate error. This is because of the Autodiscover URLs that are part of Exchange server and the fact they no longer match the self-signed...

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Posted in: Exchange

Exchange - Build Numbers and Release Dates

Version                          Build number              Release date Server  4.0                      4.0.837                   April 1996 Server  4.0 (a)                  4.0.993                   August 1996 Server ...

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Changing SBS 2008 Exchange Mailbox Limits

In Windows SBS 2008, the mailbox database and the individual mailboxes have a size limit of 2 GB. If the size limit of the mailbox database or the individual mailboxes on the Source Server is more than 2 GB, you must manually change the size limits on the Destination Server To change the size limit of the mailbox database On the Destination Server, click Start, click All Programs, click Microsoft Exchange Server 2007, and then click Exchange Management Console. Click Continue in the User Account Control dialog box. In the Exchange Management Console navigation pane, expand the Server Configuration node, and then click Mailbox. In the result pane, click the Destination Server name. In the work pane, right-click Mailbox Database, and then...

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Posted in: Exchange

Changing Exchange 2003 Message Size Limits

To change the default limits for sending and receiving message size In Exchange System Manager, expand Global Settings. Right-click Message Delivery and then click Properties. Select the Defaults tab. Change the limits for Sending Message Size and Receiving Message Size. To change the size limit of the individual mailboxes On the Exchange Server, open Active Directory Users and Computers. Select the user for which you would like to change message size limits, then right-click and click Properties. Select the Exchange General tab. Click on Delivery Restrictions. Set the Sending Message Size and Receiving Message Size and click OK. ...

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Posted in: Exchange

Malware Removal Tools

The following is a listing of most common virus/malware/rootkit removal tools: General Removal Tools Malwarebytes' Anti-Malware: http://www.majorgeeks.com/MBAM_d5756.html A very good free malware scanner. It will find and remove most types of malware automatically. Trend Micro HijackThis: http://free.antivirus.com/hijackthis/ HijackThis is a malware scanner and removal tool that can find and remove Browser Helper Objects, auto run processes, and malware services. ComboFix: http://download.bleepingcomputer.com/sUBs/ComboFix.exe ComboFix is a malware scanner and removal tool that can remove most types of malware. Rootkit Removal Tools Sophos Anti-Rootkit: http://www.sophos.com/products/free-tools/sophos-anti-rootkit.html Sophos Anti-Rootkit is a malware scanner and removal tool. It...

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Posted in: Malware

Malware Removal Registry Scripts

Script to repair running of .exe files Windows Registry Editor Version 5.00 [-HKEY_CURRENT_USER\Software\Classes\.exe][-HKEY_CURRENT_USER\Software\Classes\secfile][-HKEY_CLASSES_ROOT\secfile][-HKEY_CLASSES_ROOT\.exe\shell\open\command] [HKEY_CLASSES_ROOT\exefile\shell\open\command]@="\"%1\" %*" [HKEY_CLASSES_ROOT\.exe]@="exefile""Content Type"="application/x-msdownload" Script to re-enable task manager Windows Registry Editor Version 5.00[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]"DisableTaskMgr"=dword:00000000[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects\LocalUser\Software\Microsoft\Windows\CurrentVersion\Policies\System]"DisableTaskMgr"=dword:00000000[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system\]"DisableTaskMgr"=dword:00000000[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows...

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Posted in: Malware

How to install NTBackup on Server 2008

In order to install the Windows XP Ntbackup program on Server 2008 or Windows Vista computer you will need to following files from a Windows XP computer: Ntbackup.exe Ntmsapi.dll Vssapi.dll These can be found in the C:\Windows\System32 folder of Windows XP or downloaded directly from ftp://ftp.bitsmail.com/Knowledgebase/NTBackup.zip You could also copy these help files, but you don't really need them: Ntbackup.chm, Ntbackup.hlp These can be found in the C:\Windows\Help folder of Windows XP. Copy all 3 (or 5) files to a folder in your Vista or Server 2008 'Program Files' folder, for example use C:\Program Files\Ntbackup. Since you won't be pasting these files in the system path there is no need to worry about overwriting files. Next, you will need to turn on or install...

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Posted in: Knowledge Base,Windows Server 2008