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Conference decwet::winnt-clusters

Title:	WinNT-Clusters
Notice:	Info directories moved to DECWET::SHARE1$:[NT_CLSTR]
Moderator:	DECWET::CAPPELLOF

Created:	Thu Oct 19 1995
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	863
Total number of notes:	3478

634.0. "Maximum sessions, connections supported NT cluster" by MDR01::MONJE (MCS Madrid) Tue Feb 18 1997 13:54

    Hi,
    
    We have a big customer who is very interested in our Winnt Cluster 
    product. 
    
    He ask me some questions about the impact he could be at his NT
    installation if he decides to upgrade his NT Servers with Digital
    Windows NT cluster software.
    
    At his corporate NT network, he is thinking to evaluate our product in
    one of his domains. He has 4 NT servers in a domain, with 
    around 1500 users connected (1500 PC sessions) to them, with 
    personal file shares, application shares an so on 
    (around 4 connection per user: 4 x 1500 = 6000 connection aprox.
    simultaneously). 
    
    The customer installation also has cc:Mail as corporate E-mail environment. 
    
    
    
    Questions are:
    
    --> Impacts to upgrade the NT Servers with Digital Windows NT cluster
    	software: 
    
    	Can the 1500 PC sessions, and around 4 connection per user: 
    	4 x 1500 = 6000 connection aprox., affects to the NT cluster
    	software related with the Server/Client performance ?
    	
    	In other words, are there any measure about how much
    	clients/sessions and share connections can NT cluster software
    	manages/supports with no decrease Server performance dramatically ? 
    
    
    
    --> Suppose cc:Mail manages post-offices and users mail-folders as
    	file shares where each user connect it as M: network drive, and
    	then he navigates along subdirectories M: network drive. 
    	Can it be served into the NT cluster ? Or directly,  Is not it
    	supported ?
    
    
    
    	Thanks and best regards,
    
    Antonio Monje.-

T.R Title User Personal
Name Date Lines

634.1 Small performance impact. DECWET::CAPPELLOF My other brain is a polymer Tue Feb 18 1997 14:29 14

T.R	Title	User	Personal Name	Date	Lines
634.1	Small performance impact.	DECWET::CAPPELLOF	My other brain is a polymer	`Tue Feb 18 1997 14:29`	14
	The NT Cluster software has a very small impact on NT Server performance. If the customer's server works ok today with 1500 clients, it should work ok tomorrow. The biggest performance impact of cluster software is when clients make a connection to a file share using a cluster alias name. Making the initial connection to the server is a little slower than a client without cluster software. After the connection is made, there is no performance impact. We have not tested cc:Mail in a cluster environment. If all the software is on the client, and it uses file shares for mailboxes, then it will probably work with clusters. We cannot make any guarantees, though.

    The NT Cluster software has a very small impact on NT Server
    performance.  If the customer's server works ok today with 1500
    clients, it should work ok tomorrow.
    
    The biggest performance impact of cluster software is when clients make
    a connection to a file share using a cluster alias name.  Making the
    initial connection to the server is a little slower than a client
    without cluster software.  After the connection is made, there is no
    performance impact.
    
    We have not tested cc:Mail in a cluster environment.  If all the
    software is on the client, and it uses file shares for mailboxes, then
    it will probably work with clusters.  We cannot make any guarantees,
    though.