What is the difference between SAN, NAS and DAS?

First it is best to define the difference between a block device and filesystem. This is easier grasped if you are familiar with UNIX because it makes an objective distinction between the two things. Still the same applies to Windows. A block device is a handle to the raw disk. Such as /dev/sda for a … Read more

dig show only answer

I am not sure why you are getting comments in the output. That is the correct set of options for the behaviour you want. Here are the same options with the same version of dig: $ dig -version DiG 9.7.3 $ dig +noall +answer google.de google.de. 55 IN A 173.194.44.216 google.de. 55 IN A 173.194.44.223 … Read more

Do SPF Records For Primary Domain apply to subdomains?

You need to have separate SPF records for each subdomain you wish to send mail from. The following was originally posted on openspf.org, which used to be a great resource for this kind of thing. Latest link http://www.open-spf.org/FAQ/The_demon_question/ The Demon Question: What about subdomains? If I get mail from pielovers.demon.co.uk, and there’s no SPF data … Read more

How dangerous is a wet server room floor

Carpet is a big ‘NO! NO!!’ for a room hosting equipments that are of high value, because of the fire risk. Water is too, for obvious reasons. You should straight call maintenance immediately and have them repair the drainage system. The water could really cause problems, inform your superiors right away and draw their attention … Read more