by April 4, 2014 0 comments

For our cloud deployment, we built a SAN and made sure that the data is kept safe under the reliability of RAID. But Murphy’s law can kick in any time, so we needed an offsite backup for our critical data. Thankfully, this data was not something that will grow to TBs overnight. So we thought of doing a nifty trick. We deployed a Raspberry Pi with 2, 1TB USB drives hooked into it. We kept this in a remote location with high speed Internet connectivity. To be more specific, I kept it at my home, where I have a decent FTH Internet connection with 20 Mbps of both up and down stream data.
We hooked up the modem with DyDNS so that I can make my dynamic IP bind with a static FQDN. For those who are not aware, DyDNS or Dynamic DNS (access it at dy.com) provides a service where you pay $25 per annum and use a client to update your Dynamic Public IP assigned to you by your ISP to a DNS Name provided by DyDNS. This happens automatically the moment the IP changes.
Most interestingly, DyDNS being one of the oldest to provide such a service, is pretty popular and most of the internet modems or ADSL Routers we use in India have an inbuilt client for it.
So all you need to do is to go to Dy.com, pay the money and get registered. On registration, you get the following:
1. Username
2. Password
3. A FQDN
Now all you have to do is to login to your home router which has a DyDNS client (most routers that I have seen in last 5 years, particularly the ones commonly given by Airtel, BSNL and other major ISPs in India, have this support) and feed the above three pieces of information. Here is how it looks on my Router:

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