And by relying on autoupdate capabilities and hardened platforms, ongoing maintenance costs are further reduced, especially compared with Windows- or Unix-based DNS.
While each of the three DNS appliances we tested delivers on the promise of easy-to-manage DNS, we recommend BlueCat's Adonis for its security features, client interface and error-checking capabilities.
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The ROI Adds Up
All three vendors supplied examples of return on investment, each showing a payback in four to 12 months. In every case, the cost of the appliance was offset by reducing setup and maintenance expenses compared with conventional setups. By our numbers, if you're looking at a $10,000 outlay, your DNS guru is bringing in $45 per hour, and you can save 222 hours in configuration and maintenance labor, you've paid for the appliance. However you calculate it, it should be easy to justify the expense.
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