Hi,

Typically the install configuration would have your CF server and your Db 
server separate anyways.

I think from memory you will find that SQL server will write to your log first, 
and then to the physical database table. So don't forget to place your log on a 
fast disk\network as well.

The scenario you describe that another sql server will 'kick in' can be dealt 
with in a number of scenarios.

Hardware clustering of your SQL servers for example will allow another to kick 
in if one server stops. Each solution has its benefits and pitfalls. Many of 
them being cost $$.

A simple cost effective solution may be log shipping.. if you have another 
server handy. That may mean you have to point your DSN to the different server 
if things go pear-shaped. You could even try catch a specific database error 
code and change your DSN in a variable..



Scott Thornton, Programmer
Billing Unit, Hunter-New England Area Health Service
ext: 51762 p: +61 02 491 51762 m: 0413 800 242


>>> "Steve Onnis" <[EMAIL PROTECTED]> 13/10/2008 10:28 am >>>

My network is gigabit so i am hoping it wont be too bad.  The database
server is currently on a different system to the web server anyway. What i
am wanting to know is if the data is written to the MDF file as quickly as
it would if it was on the same physical system as the sql server itself, or
if there is a delay.

I mean redundant as in like a seconday mail server, but sql server.  If one
sql server goes down, the other one will kick in and take over.

Stee

-----Original Message-----
From: cfaussie@googlegroups.com [mailto:[EMAIL PROTECTED] On Behalf
Of Scott Thornton
Sent: Monday, 13 October 2008 8:24 AM
To: cfaussie@googlegroups.com 
Subject: [cfaussie] Re: OT : SQL server over a network


HI,

There will be an inherent delay in DB access across a network. It will only
be as fast as the slowest piece of your network.

That's why we put our DB databases on disks in a SAN, all connected up with
gigabit ethernet. Pretty much next to the database server in a rack.

What do you mean redundant server? You may like to check out the terms
"Replication" and "Log Shipping" for making hot-standby by copies of your
database. Also clustering sql server for the ultimate in redundancy.

Scott Thornton, Programmer
Billing Unit, Hunter-New England Area Health Service
ext: 51762 p: +61 02 491 51762 m: 0413 800 242


>>> "Steve Onnis" <[EMAIL PROTECTED]> 12/10/2008 10:39 pm >>>
Hey guys
 
Just curioud to know if anyone knows if there is a delay between data being
written to an MSSQL data file or if it is immediate.  I am looking at
storing the SQL data files across a network on a file server and just
wanting to try and find out any issues this would cause if something was to
happen and the sql server died.  Would the data be current or is there a
latency between actions and writing the data out.
 
Also, if anyone knows of any places to find out how to set up redundant SQL
servers, or if anyone has done it them or even if its possible.
 
Steve










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