From: HELP_PC [mailto:[EMAIL PROTECTED] Subject: RE: Comparing NT Backup speeds
You are very precious ! I have heard M called many things - but PRECIOUS!!! That is definitely a new one for the books. J Webster _____ Da: Michael B. Smith [mailto:[EMAIL PROTECTED] Oggetto: RE: Comparing NT Backup speeds I don't think you'll find any problems with it. The section below is showing its age. It was written before Microsoft moved to E12 and DPM and VSS. But it was accurate in the 2004 timeframe. NTBackup When people ask how Microsoft does their Exchange Server backups, most people are surprised to hear that Microsoft uses NTBackup. Often they don't think to ask the next question-what else do you use? NTBackup is used for the first level backup. This means that it generates the backups directly from Exchange Server and then places the backups onto other media. Microsoft backs up to disk for the first level backup. After backing up to disk, Microsoft then does a secondary dump to tape or to SAN, according to their internal backup rotation. This second and/or third level backup often uses other tools besides NTBackup. Until recently, Microsoft IT (the group inside Microsoft for maintaining their production servers) had a special version of NTBackup that wasn't available to the outside world. That version was made available as a hotfix to Windows Server 2003 (Microsoft KB 839272 (System performance is negatively affected when Ntbackup.exe writes to a destination .bkf file)) and is included in Service Pack 1 for Windows Server 2003. This change to NTBackup increases its speed significantly and decreases its performance impact on the server significantly. You can find detailed information about the process that Microsoft uses internally in the document named Backup Process Used with Clustered Exchange Server 2003 Servers at Microsoft at http://www.microsoft.com/downloads/details.aspx?FamilyId=63FA9270-563F-4627- A0A0-8A07E02CF9BF&displaylang=en (http://tinyurl.com/bcfhh). Despite the document name, the information in the document applies completely to non-clustered servers as well as to clustered servers (excepting only that clustered servers use clustered disk for the backup). This document describes the registry changes covered in the next section (which can improve performance) and provides practices for performing multiple parallel backups of information stores (as covered in the following sections). ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
