I am building a Beowulf cluster out of ~80 dell vostro 460 (commodity desktop) computers. At full load these draw nearly 100amps, and generate a ton of heat. Are there cost effective hosting facilities that would operate these at a nominal cost? I've priced out cloud computing services, and they...

Does amazon ec2 use stateful NAT / stateful firewalls? I'm having a problem getting EC2 to allow a large number of TCPIP connections, and i was wondering if the NAT / firewall may be a limiting factor. Thanks

Consider the following: I (hypothetically) have one heavyweight server/master node with a couple disks in it and a group of lightweight diskless clients/nodes on a 10 gigabit LAN. The server is running: DHCP and TFTP to give the clients a kernel over PXE. PXE kernel loads and mounts NFS on mast...

I try to compare Debian and CentOS by different parameters. And I want to clarify difference in its kernels. I understand that both systems are Linux and it can include difference versions of Linux kernel. But as I know the maintainers of this distributive add their own drivers and patches. So i...

Do I add my ISP's name servers for the domain or itself as the name server? e.g. say I have the domain www.shoes.com and a server setup for DNS ns1.shoes.com will the name server for shoes.com be ns1.shoes.com or my ISPs name servers? EDIT: Just to clarify my DNS server is configured with the I...

included is the header results form yahoo message. You will see if there that is has server.realcashback.com.au but I need it to not be and to be from my server, is there any way to make it send as my domain.com instead of the server. The domain I want it sending from is not on the same server. ...

Here is the case: My client currently has 100 PCs(Windows XP) with no internet access control at all. All PCs are connecting to 4 switches wirely. 4 switeches then connect to a central switch then connect to a router to access internet.(No wireless AP) They also have a CMS system which hosting in...

I have a page with Munin reports and I want to send the email with graphs once per week on specific email. Any thoughts on how to achieve this? Thanks!

How do I make a backup of all settings on my symantec gateway 320, my company needs a new one due to having to reset all the time because one of our tunnels is contstantly timing out.