Dave's Tech Blog
A Third Eye on Technology

A client of mine recently wiped his computer clean when they accidentally initiated a destructive recovery via the F10 key during POST. This caused their hard drive to be formated and their OS to be reinstalled as it was when it was originally installed at the factory. The lost files on the system were not recoverable, and the only alternative would be to have an advanced data forensics lab extract the old data off, the cost of which could go up as high as a couple thousand dollars.

There are some simple things you should get in the habit of doing if you want to decrease your odds of facing such a horrid situation as the one above:

Unplug your PC when there is lightning outside

I shouldn’t have to tell people this, but some of you uber-nerds out there think that the bigger their basement-computer-bedroom-cave-hermit dwelling is, the more invincible they are. It’s not a matter of probability of being struck, but probability of surviving a lightning strike unscathed. Like the Black Knight from Monty Python.

Don’t let the price tag on that expensive Uninterrupted Power Supply fool you. Its purpose isn’t to safe-guard you from a lightning strike, but to sustain power to your PC in the event of an unexpected outage and to compensate for brownouts and power spikes. Lightning can still penetrate it and make its way to your computer. Once there, it’s up in the air how much damage it might inflict, and hard to diagnose the extent of damage after the fact. Every time I’ve seen a system that’s been hit by lightning, I’ve ended up having to tell people to buy a new computer, because so many parts were damaged in a split second.

Do what most people do during severe weather: Watch TV till the power goes out, grab a radio and flash light, salvage the remaining beer from the unpowered refrigerator, and hope for the best when you regain consciousness in the morning. Or whatever floats your boat.  If you have an Internet addiction like I do, use a wireless device like a laptop or a cell phone to get your info fix.

Backup to an external storage device

Here’s what I’ve got pictured above from left to right:

• An external USB hard drive. Advantages: Cheap for price per megabyte, easy to setup and use. Disadvantages: Subject to failure from old age after several years of use (see your warranty), and sometimes bulky (depends on how cheap you are).
• A USB Flash Drive. Advantages: Small, handy, convenient, instant plug-and-play capable (usually). Disadvantages: Must be replaced after about 250 uses, easy to misplace and lose (get a nice 4 dollar lanyard like I did). Costly if you have lots of data to backup.
• A cell phone with a MicroSD card. Same as the USB flash drive, but slower. The advantage is that it’s in your phone, and you probably aren’t as likely to misplace that thing.
• Network Attached Storage. Network attached storage is basically a “computer-less” hard drive that attaches to your local network (router) and shares hard drive space to other computers on the network. Advantage: Highest fault tolerance (there are multiple copies of files spread across hard drives, so if one drive fails, the file is not lost). Disadvantage: Expensive.

You can also backup data to external CD’s or DVD’s and keep them in a dark place. Doing so will keep your data safe for a long time. But it’s good to shed old storage media after several years of data sitting on them and move data to a fresher medium that is less likely to suddenly flake out unexpectedly.

You can also use software to automate backing data up. A good one is Amanda Open Source Backup. I’ll write more about it sometime in the future. But for now, you should consider using one of the external devices above and practice good habits to protect your computer and your documents from being lost.

This entry was posted on Wednesday, April 2nd, 2008 at 2:25 am and is filed under Education, Security. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.