Start of AuthorityAbbreviated SOA, a type of resource record that is used by the Domain Name System (DNS). Every domain name has an SOA record in its database that indicates basic properties of the domain and the zone that the domain is in. The SOA record contains:
- The host name for the primary name server for the zone.
- An e-mail address of the person who is responsible for the domain.
- The serial number for the zone.
- The refresh interval. This is how often, in seconds, the secondary name servers check with the primary name server to see if any changes have been made to the domain's zone file.
- The time, in seconds, a secondary server waits before retrying a failed zone transfer. This time is typically less than the refresh interval.
- The time, in seconds, before a secondary server stops responding to queries, or "expires" a zone, after a lapsed refresh interval where the zone was not refreshed or updated.
- The minimum time-to-live (TTL). This value is supplied in query responses by servers for the zone to inform others how long they should cache a resource record provided in an answer.
From the widest view, everything that we include under the heading of mobile has irrevocably changed IT's relationship with the rest of the... Read More »Choosing an Enterprise Storage Implementation
When you deploy a new enterprise storage system, you must decide whether to design and build your own storage system or to utilize a cloud-based... Read More »Big Data Analytics Expert Predictions
In this Webopedia Did You Know...? article we look at three big data expert predictions for 2014. Read More »
Keeping track of big data trends, research and statistics gives IT professionals a solid foundation to plan big data projects. Here are 15... Read More »Enterprise Storage Vendors
There's a number of vendors that sell enterprise storage hardware or offer cloud-based enterprise storage. View Webopedia's Enterprise storage... Read More »50 Cloud Computing Terms Defined
From planning a private cloud project to finding an online cloud storage provider, Webopedia's A-Z Cloud Computing Glossary will help you... Read More »
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
- Enterprise Mobility Exchange results show continued growth and emphasis on mobility. CIOInsight breaks down the numbers here. »
- Watch Datamation's editor James Maguire moderate roundtable discussions with tech experts from companies such as Accenture, Dell, Blue Jeans Network, Microsoft and more »