Re: [Emerald] Revelation

Dale E. Reed Jr. ( (no email) )
Tue, 22 Dec 1998 02:18:50 -0800

Brandon Bryant wrote:
> OK.. Then here is another question for you. How difficult is it to set up
> replication for two SQL servers? I am reluctant to point both radius

Its not for the weak of heart or under powered machines. You should
atleast a 256mb, SCSI based, PII box for the replication source.

> servers to the same SQL server. Right now, the primary radius and the
> primary SQL are the same machine, and the secondary radius and the
> secondary SQL are the same machine. If the Primary radius server goes
> down, chances are the db is down too. I guess we could have one db server
> and point two other servers running radius to that one, and then have even
> another machine running a backup DB, and then use the multiple DSN feature
> on Radius to switch to the backup DB when there is a problem with the

If you have the hardware (RadiusNT takes very little CPU usage) then I
recommend NOT running RadiusNT on your SQL Servers. I don't recommend
running ANYTHING on your SQL Servers. Build them so that they wont
go down and you'll be in good shape.

> first. Does (will) RadiusNT have the multi-DSN feature? I know it has
> been discussed on the list before but I never really saw whether or not
> this feature will do what I want it to here.

This is quite a but more complicated than just connecting to a bunch of
listed DSNs. You should see this in the next major release, as we
are working on it actively.

> I'm trying to keep my point of failure as far back as possible. If the
> server goes down at 2AM, I don't want to have change anything to get
> service back up.

Some of the new RadiusNT 2.5.200 features will greatly help here, as
actively cache and can keep on going if SQL Server goes down.

-- Dale E. Reed Jr.  (       IEA Software, Inc.      |  RadiusNT, Emerald, and NT FAQs Internet Solutions for Today  |

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