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Re: High availability

Buchan Milne wrote:
On Tuesday 21 August 2007 08:57:07 Taymour A. El Erian wrote:
I want to make this more available, I have a DR site and I would like to
have an LDAP server running getting all the updates from the primary
site. This DR LDAP will be active in case the primary site is down and
will accept read/write operations.

In my company, DR means a disaster has struck, e.g. a building has been destroyed. So, you typically don't:
1)Do a DR failover for any trivial reason
2)Do a DR failover automatically

So, just run a normal replica in the DR, and have a config file ready to be able to "promote" it to a master. If you need slaves there too, just have them replicate of the "DR master", so you have less config changes to do in the case of a real disaster.

Well, maybe I am not explaining correctly, we have a problem in the main site which could cause it to be unreachable for a couple of hours or so and in this event I want everything to run on the backup site. In case the main site is down, I need the backup to take over and even for writes and updates.

Taymour A El Erian
System Division Manager
TE Data
E-mail: taymour.elerian@tedata.net
Web:     www.tedata.net
Tel:    +(202)-33320700
Fax:	+(202)-33320800
Ext:    1101