[THIN] zone design
- From: "Lilley, Brian" <brian.lilley@xxxxxxxx>
- To: "'thin@xxxxxxxxxxxxx'" <thin@xxxxxxxxxxxxx>
- Date: Mon, 10 May 2004 12:10:06 +0100
Hello all,
Here are my thoughts on zone design for global MPS3 farm.. any comments
appreciated.
Farm is made up of three regional zones - A, B and C. Each regional zone has
a hot-site DR zone Aa, Bb, Cc.
The DR hot sites are well connected through low latency fibre connections.
WAN links between regional sites are low latency ATM.
My initial thoughts were that the Citrix policy would ensure
1. Each regional set of users would have their primary zone pointing to their
local regional zone
2. If user in another regions zone, then they would point to the local
regional zone, assuming these servers support same apps and have local access
to users data
3. If the preferred zone has died for either of the above zone preferences, I
guess it should failover to either the lowest latency 'best' connected
regional site using the 'follow the sun idea', or, it should failover to the
local DR site. I guess this decision is based on what is actually available
in the DR site compared to what is available in the other regions??
Is there any benefit in have a global 'backup' zone which had a presence in
each of the regional offices and the DR sites? hhmmm...
TIA, Brian
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