James mentioned pre-fetch which IIRC is a Vista/7 technology that pre-loads frequently used binaries into memory at boot/logon time
Cheers Ken From: Webster [mailto:webs...@carlwebster.com] Sent: Friday, 8 March 2013 5:29 AM To: NT System Admin Issues Subject: RE: Normalizing a disk image Maybe you are thinking of the .Net Framework compiling that happens in the background??? http://social.msdn.microsoft.com/Forums/en/clr/thread/62c082cd-819a-4aa0-b526-65c05b0b0f13 http://msdn.microsoft.com/en-us/magazine/cc163610.aspx Carl Webster Consultant and Citrix Technology Professional http://www.CarlWebster.com<http://www.carlwebster.com/> From: Webster [mailto:webs...@carlwebster.com] Sent: Thursday, March 07, 2013 11:07 AM To: NT System Admin Issues Subject: RE: Normalizing a disk image http://community.citrix.com/kits/#/kit/1067009 Only because it applies to the project I am on, I went through ALL the optimization guides and saw nothing about multiple boots before sealing. Carl Webster Consultant and Citrix Technology Professional http://www.CarlWebster.com<http://www.carlwebster.com/> From: Webster [mailto:webs...@carlwebster.com] Sent: Thursday, March 07, 2013 10:34 AM To: NT System Admin Issues Subject: RE: Normalizing a disk image http://support.citrix.com/servlet/KbServlet/download/24559-102-647700/XD%20-%20Top%2010%20Mistakes%20Identified%20When%20Doing%20Desktop%20Virtualization.pdf Item #6, page 8 is about Antivirus. I have still not found anything about booting multiple times before sealing the image. Carl Webster Consultant and Citrix Technology Professional http://www.CarlWebster.com<http://www.carlwebster.com/> From: Webster [mailto:webs...@carlwebster.com] Sent: Thursday, March 07, 2013 5:43 AM To: NT System Admin Issues Subject: RE: Normalizing a disk image The AV one, yes, that is recommended. Boot 6 time, never heard of it. BUT I have heard of booting and waiting a long time so .net stuff has time to compile in the background but that was several years ago. Carl Webster Consultant and Citrix Technology Professional http://www.CarlWebster.com<http://www.carlwebster.com/> From: James Rankin [mailto:kz2...@googlemail.com] Sent: Thursday, March 07, 2013 5:32 AM To: NT System Admin Issues Subject: Normalizing a disk image Been doing a lot of work recently with Citrix Provisioning Services - for those of you that aren't familiar with it, it allows servers or desktops to boot from a "gold" or "master" read-only disk image that returns to the initial state at reboot time. Obviously prior to "sealing" a gold image you have to normalize it to make sure that software doesn't fail and optimize it for best performance. I've gone through a lot of the usual optimizations, defrag, flush DNS, etc., but came across another two possible optimizations online and was wondering if they were actually worth doing. One I heard about was running a full AV scan prior to sealing so that all files are already "known" to the antivirus software? Is this actually relevant, or does it depend on the AV in use? The other possible optimization was rebooting the system six times and waiting 120 seconds between each reboot to allow for boot prefetching. Again, is this something that would help a system run better? Thanks for any insights, -- James Rankin Technical Consultant (ACA, CCA, MCTS) http://appsensebigot.blogspot.co.uk ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
