BleepingComputer.com: Downside to Raid Mirroring?

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Downside to Raid Mirroring?

#1 User is offline   kjm782 

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Posted 08 November 2008 - 03:22 PM

I was wondering if anyone knew of any downsides to RAID mirroring other than cost. My current hard drive is dying (I get file corruption messages in Windows and CHKDSK finds hundreds of errors) and I am going to be purchasing a new hard drive in the next few days. Since storage has gotten much cheaper I am thinking about buying two of the same hard drive and setting up a RAID mirror. My question is if one hard drive begins to fail couldn't the data on the good drive also get corrupted? Currently I back up my data periodically to an external drive. Are there any other downsides to a RAID mirror for backing up data?

#2 User is offline   Sneakycyber 

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Posted 08 November 2008 - 03:32 PM

If your using Raid 0 the drives are seen as one logical drive and if one fails all the information will be lost. If you are using a Raid 1 setup then if the primary drive fails the integrity of the mirror remains.
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#3 User is offline   dpunisher 

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Posted 08 November 2008 - 11:29 PM

I always bear in mind that with a RAID 1 array the only thing it guards against is a bad hard drive. It doesn't prevent damage from malware/viruses, accidental deletion or other OS or hardware screwups. Personally, for a home system, I would use that hard drive money and get another hard drive, and a USB enclosure/adapter to use as a backup solution.

As far as actual downsides to a RAID 1 setup, I can't think of any. You will have data protected if/when a hard drive dies.
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