Rodolfo Paiz Offline Image Upload: On
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I have about 700GB of files right now. My main data "drive" is a RAID-5 array (4 x 500GB) that provides 1.36TB of formatted capacity. I currently have two WD MyBook 1TB "drives" (actually RAID-0 arrays of 2 x 500GB each) for backup. The FireWire 800 and RAID-0 configuration on the MyBooks ensure that I get 30-40 MBps transfers from and to any disk, just as though all the drives were internal.
One WD MyBook stays in the fire-resistant safe with a full backup. The other WD MyBook is connected to the main computers, and every 12 hours (6am and 6pm) the main RAID array is synchronized to the MyBook. Once or twice a week (at least, and sometimes more often if there's a special event), the MyBooks are switched: the one with the most recent backup goes into the safe, and the other gets brought up to date at the next sync. SyncBack SE (by 2BrightSparks) is my software of choice and I love it.
An advantage to all of this is occasional portability. If we're going somewhere for the weekend and I want to edit data, I sync both MyBooks (so the one in the safe has an up-to-the-minute backup of everything), then take the other MyBook with me. I'm happy knowing that I left two full copies of everything at home, so even if I drop my bag in a lake and my house burns down, I shouldn't lose any data.
Increasing data capacity is no sweat. First, when I get close to exceeding the capacity of the MyBooks (say, 900GB of data), I'll sell them and get two 2TB external drives for backup. Then, when I get to 1.2GB of data, I'll add another 500GB drive to the internal RAID (making it 5 x 500GB with 1.81TB formatted usable), reformat the internal RAID array and restore the data from the external drive.
Even getting close to maxing out that configuration will take me a couple of years. My best guess is that I will then sell my current computer along with all its storage, and just build myself a new one with a simple backup system like I have now: a main RAID array for speed and fault-tolerance in daily work, with two external-drive backups for redundancy with speed.
Edited on Mar 30, 2008 at 08:38 AM
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