Highly Available DNS?

[edlewis at my-deja.com]

Anyone have any insight to this?

Situation:

Customer has single DNS server and wishes to take redundancy measures.
Customer has 3000 clients all pointing to this single DNS server IP
address and is not willing to make DNS configuration modifications on
the client side.

Options:

1) IBM eNetwork Dispatcher to direct requests to primary DNS server
unless it fails, in which case requests directed to standby.

2) Clustered DNS servers in hot-standby configuration.

3) "Poor man's HA" scripted solution that may involve manual
intervention.

TIA



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