Hi Al, Looking in the Windows Server System Reference Architecture you can read:
"... scaling the DHCP service involves network infrastructure issues for most enterprises." -> However, according to your question this does not apply for your network. Lucky you ;-)! The following quote relates to your question: "You can create an unlimited number of scopes on a DHCP server. However, a DHCP server should ideally host no more than 1,000 scopes. When adding a large number of scopes to the server, be aware that each scope creates a corresponding need for additional disk space for the DHCP server registry and the server paging file. Before deployment, you should test your DHCP servers on the network to determine any limitations and abilities of your hardware and to see whether the network architecture, traffic, and other factors affect DHCP server performance." However, it still doesn't answer it. However, there is a specific article about planning DHCP networks that might (not sure) deal with this topic. This is the URL: http://www.microsoft.com/resources/documentation/WindowsServ/2003/standard/p roddocs/en-us/Default.asp?url=/resources/documentation/WindowsServ/2003/stan dard/proddocs/en-us/sag_DHCP_imp_PlanningNetworks.asp Good luck! John Reijnders -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mulnick, Al Sent: maandag 3 januari 2005 17:08 To: [email protected] Subject: RE: [ActiveDir] DHCP Thanks Jorge, I did see and read that. Unless I'm missing something in there, it doesn't answer the questions however. It does give some ideas, but it's not detailed enough to help. Al -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jorge de Almeida Pinto Sent: Monday, January 03, 2005 11:02 AM To: [email protected] Subject: RE: [ActiveDir] DHCP Hi Al, Give a try with the W2K3 Deployment Kit - Designing Network Services -> http://www.microsoft.com/resources/documentation/WindowsServ/2003/all/deploy guide/en-us/DNSBC_DHC_OVERVIEW.asp Regards, Jorge ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mulnick, Al Sent: maandag 3 januari 2005 15:15 To: [email protected] Subject: [ActiveDir] DHCP I'm looking for more precise information for DHCP sizing and I'd appreciate any real-world information as well. What I'm trying to find out is how much registry space one DHCP server requires at max capacity. I realize that a DHCP server puts information in the registry for each scope. What exactly it's supposed to put in there under any given circumstance is a little less clear. How much space it requires or a way to estimate how much possible space could be used is totally unclear. I did find some information about RSL (max registry size basically) and about Microsoft's case study with their DHCP usage. That's not enough information though. I'd like to find out what my limits are. For example, I'm interested in what would happen if I put the entire 10.x.x.x netblock on a single DHCP server. Before you tell me that shouldn't happen because of fault tolerance or network topology, I can tell you that network bandwidth is not a problem I suffer from. Fault tolerance for DHCP is often done via settings and the 80/20 split concept, although at some point it's possible that one server would have to achieve 100% during a failure scenario. Also, what is 80% capacity for one server? Enough of the rambling... If anyone could point me in a better direction, I'd appreciate it. At worst, if you have any tools that would help to measure registry impact, that would be appreciated. I haven't investigated that route yet, but suspect that sysinternals likely has something I can use. I'm interested in the theoretical and the folks that wrote the code. Questions I need to answer: What is the max possible impact of the DHCP application on the registry? What is the practical limit of a DHCP server in quantifiable terms? Additional question from me: Does anyone have any documents they can point me to that give the possible registry impact when scaling a DHCP server? TIA (Happy New Year BTW to those following the Gregorian Calendarical system ;) Al Mulnick "I strive to be unique. Just like everybody else" This e-mail and any attachment is for authorised use by the intended recipient(s) only. It may contain proprietary material, confidential information and/or be subject to legal privilege. It should not be copied, disclosed to, retained or used by, any other party. If you are not an intended recipient then please promptly delete this e-mail and any attachment and all copies and inform the sender. Thank you. List info : http://www.activedir.org/mail_list.htm List FAQ : http://www.activedir.org/list_faq.htm List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/ This e-mail and any attachment is for authorised use by the intended recipient(s) only. It may contain proprietary material, confidential information and/or be subject to legal privilege. It should not be copied, disclosed to, retained or used by, any other party. If you are not an intended recipient then please promptly delete this e-mail and any attachment and all copies and inform the sender. Thank you. List info : http://www.activedir.org/mail_list.htm List FAQ : http://www.activedir.org/list_faq.htm List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/
