Terabyte Backup

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brucedecosta

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Ville

I've been facing the same predicament for some time now. The total amount of data that needs to be backed up is currently about 4-5Tb. The primary storage is a RAID-5 array, and some of it is duplicated once or twice a day to a LAN server array which runs RAID-6 (dual parity). But like others here have mentioned, RAID is not a backup stragety. For starters, having all the data *online* at once bothers me. All it takes is one lightning strike to fry all systems at once.

So, for now, while waiting for a more cost-effective and more elegant solution I've installed a Vantec Hard Drive dock which makes it easy to use bare drives as storage "cassettes". When not in dock, I keep the drives in WiebeTech hard drive cases which also make it easy to take drives offsite when needed.

I suppose there is something to be said about repeated insertions/removals of the bare drives and how long their SATA connectors can withstand such use. Depending on the budget a "mobile" drive tray such as Addonics "Diamond" drive trays might be a better choice... but terabyte drives currently costing about $100, the extra $25 (for a tray) seems excessive, especially when couple of dozen drives are in rotation.

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ilantech

RAID 5 is not a backup system. & just copying your data to another system is not good enough. you need to have the ability to save version of your files & DB for has long as you can, that can amount to up to 50% more than your main aray data capacity.

I would sudjest building the cheepest system you can, with the bigest disk you can RAID with no redundancy what so ever & install a good backup software. you do not need redundancy or speed on a backup system.

the beauty of the thing is that the more often you check for changes the less the delta is & the less intrusive your backup is & the less quick it need to be! you can even put the old files versions (the realy important data) on an smaler mirrore array if that important to you.

 

ilan

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Vladislav_Draculva

I notice a lot of people preaching RAID 5...but in my opinion RAID 10 AKA RAID 1+0 is the best of both worlds for data backup...RAID 0 uses parity...RAID 5 uses redundancy... RAID 10 USES Redundancy and parity...ultimately though...I use offsite storage as my prefered backup strategy...from two different companies...because one comany I use is based in Cali...so they could get earthquaked/Mudslided?burned off the face of the earth...best of luck to all in you quest for affordable backup solutions...

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tolian49

Not sure how you define affordable, but there are several online backup services that will back up nigh on limitless amounts of data for a very reasonable fee.  I just started using Backblaze after reading about their very cool storage server design.  For $5 a month or $50 per year I can backup unlimited data from any locally attached drive on a single computer.  It takes eons to backup 1.5TB of data, but once it does then everything just stays incrementally synced.  In the event of a disaster you can request a zip file of all your stuff to re-download, or you can pay them to send you an external hard drive.  I know there are several other services out there like this, but for $50 a year you can essentially backup everything.  For a home user that seems a far better option than trying to fiddle with tapes.  Plus there's the advantage of the backup being elsewhere so if there's a natural disaster your backup harddrive doesn't go poof with your primary storage since they're in the same demolished house.

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Crazybillybob

I'm using the Dlink NAS.... It has 1Gb copper nic, and can do Raid 1...but only holds 2 disks. That way my bits are safe.... But the offsite rotation is the ultimate in saftey!

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jabbit

Actually, the MyBook Studio II IS a bad choice for backing up data. True, it is 4 TBs of hard drive space. But, it is (2) 2 TB drives in a RAID 0 array. So you are now relying on the integrity of 2 hard drives to store your data. Not wise in a back up situation.

 Like the other person said, and Atom-based build would probably be a bit cheaper, not as pretty, but FAR more secure and stable. I would use (4) 1 TB "Green" drives and I would have much more confidence in something like that.

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Modred189

Build a cheap HTPC with an atom core, and then grab a bunch of WD 1TB greenpowers for cheap NAS/Backup/media

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sfltrack

Better buy two devices and rotate one off site. I'd stick with

raid 5 if you don't rotate backups off site.

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