you're most likely here for;

Raspberry PI light switch.
Subnet + Automated VLSM calculator.


Using a HP DL380 G7 as a workstation

2 workstations on 1 machine

I have had this idea of using a server as a workstation at my work for a while now, currently I am trying to get 2GPUs to work in a DL380G7 (or Gen6) so I CPU power can be shared and there will be 2 workstations in one chassis. (put a hypervisor on it and pass the GPUs to the 2 guest operating systems.)
The current specs of the machine are:

In case you were wondering what kind of speed you can expect when you put 8 of those SSDs in raid 60 on an HP P410I controller

The post is extremely slow but that is ok as the machine can stay on at all times or start scheduled just before work.
There are some issues preventing this from working right now:
- The HP server turns up it's fans when you put in an PCI-e GPU, which means the server suddendly isn't quiet anymore.
HP actually has really amazing and smart fan management, this means the 360 (with lower power CPUs) and the 380 can literally be quiet enough to operate in an office environment (albeit not under 100% contantly, but that is not going to happen)
- It seems like the second (physiscally 16x) PCI-e slot (which is right above the PSU) doesn't support GPUs, this will need some more testing.

why this site

This is my website on where I can put some projects/share some information with the rest of the world \o/

server upgrade

More information on the about page!

I have updgraded replaced my server (I run my webiste on this server too), here is a short overview of the specificatoins, for more information you can visit the about page!

Here is a short overview of the specifications of the system:

-CPUIntel Core I5 7600
-Ram8 GB generic ram
-Storage5x 500GB HDD

And some roles/features:

-Hyper-VVirtual machines
-StoragePersonal cloud project
9-10 May 2017

Why IPv6

The site is now available on IPv6!

I decided to do something about my site again because as an IT student it wouldn't hurt if I had something to show off with ;), this site includes some links and I might try to keep some posts on here.
The main reason I added IPv6 support is because it is where the future is; At some point there will be people that don't even get a IPv4 address anymore, meaning they will not be able to visit sites that only run on IPv4 (unless they use a proxy, which has it's own problems...)
The main reason switching to IPv6 will be a good thing for in the future is because IPv4 addresses are running out. An IPv4 address can look something along the lines of:, this is a a 32 bit value. If we put this in a table we can see that there is a total of 32 bits, 8 for every set of numbers separated by a dot. The IP address is noted in a normal decimal format.

IP address (DEC)19216811
IP address (BIN)1100 00001010 10000000 00010000 0001

The total amount of IPv4 addresses is: 4,294,967,296 (2 to the power of 32), but a lot of these addresses cannot be used because they are used for other purposes, things like on local networks, and more.
To solve the problem of there not being infinite IP addresses we put multiple devices on one location behind a router, a router allows multiple local machines to connect to external networks over 1 address, the router makes sure that if Computer1 sends a request to it gets delivered on that machine.
IPv6 however is a 128 bit value, that means there are a total of 3.4*10^38 Addresses (Mouse for full value) this is enought to give every device it's own IPv6 address, and providers are doing this already. This also means that the firewall on said device needs to be good.
An IPv6 address is a set of 8 Hexadecimal values each 4 characters long; Hexadecimal(also known as HEX) means that there are a total of 16 possible values per character, HEX stands for 6 and decimal for the 10 numbers 0 thru 9 to add 6 more we use the first letters of the alphabet: A, B, C, D, E and F so the characters for Hexadecimal are: 0123456789ABCDEF: I will now add in a conversion table (-->)

As we can see table I put in here; You need 4 binary values to store the same amount of information as one Hexadecimal value, this is explained by the fact that we are working in different "base" math, Binary is base 2, there only are 2 possible states, either a 1 or 0, High or Low, On or Off. One hexadecimal value can have a total of 16 states, this is the reason it can store more information.

29 March 2017
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