Mentioned private cloud, many people first thought is to NAS.
The NAS is the most famous, undoubtedly Synology. Synology price can be several thousand, so many cash-strapped human prohibitive.
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Is it the poor, do not deserve to have NAS?
Way is always there, Synology can not afford their own DIY NAS with a peanut bar , remote access comparable to Synology.
Ready to work
First, without a host idle. (Here as an example to assemble a new host, as the main components) 
after assembly, like the installation of a small hard disk partners, may be installed later on their own, the inner space of the main chassis is generally sufficient. 
After assembling the entire chassis, it is this way. 
After the host is ready, the host into a NAS server, the host hard disk for storing data.
Prepare a U disk containing DSM start the program, to the USB host, enter the motherboard BIOS settings to boot from the U disk. 
When the installation is successful, there will be three options on the computer screen, select the second-Me gnoboot (This step is crucial, because the default is the first, Bahrain DSM can start from the first entry of a default). 
After entering the start version installed. (Here for 4458 version, for example) 
after the installation is complete, run the computer in the same local area network to another third party assistant (here Synology Assistant) , NAS under the search network. 
Notice that the NAS system DSM has not been successfully installed, right click and choose to install (installation via Synology Assistant).
Choose from a local installation PAT file, follow the onscreen instructions step by step to complete enough.
After the installation is complete, enter the IP address will appear DSM5.0 login screen, enter your user name and password, to achieve NAS access. 
NAS considered to get that done here, but this time only be able to access the network at home, once away from home networks, NAS would not be able to access. (Unless there is a public IP)
then how can we achieve external network access to homes built NAS it? Then read on ...
Peanut bar map
The higher level router a termination power peanut bar, one end of the NAS of access. 
Visit the website b.oray.com into the management interface peanut shells.
Enter the peanut stick behind the SN number , the default password is admin, into the management interface. 
In the background screen, find the [network penetration] - [Add Mapping], add the IP and port number in the NAS home network.
After mapping is completed, you can access address generated by the external network to access the NAS home, access document.
This building cost only about $ 500, compared to Synology easily more than 2,000 yuan, more cost-effective.