db- files on secondary dns server

[Steven Carr]

On 21 January 2014 13:41, Ayca Taskin (Garanti Teknoloji) <
AycaTa at garanti.com.tr> wrote:

>  We’re using Bind DNS server  with version BIND 9.9.2 as a secondary
> (slave) dns server. We saw there is a lot of files starting with “db-“
>  under /var/named directory and updating continuously. does anybody  know
> what it is?
>

I already responded to this when you posted on dns-operations...

Those files are cached copies of the slave zones you are serving. Bind will
transfer and keep a copy of these zones to enable bind to serve the data
immediately on a restart, otherwise it would have to perform a zone
transfer on start-up and if the master is no longer available then bind
wouldn't be able to serve the zone.

Steve
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