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Old January 4th 18, 05:56 PM posted to alt.comp.os.windows-10
Char Jackson
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Default Failed Redundancy

On Thu, 04 Jan 2018 09:06:40 -0700, Ken Blake
wrote:

On Thu, 04 Jan 2018 00:58:01 -0600, Char Jackson
wrote:

On Thu, 04 Jan 2018 05:47:29 GMT, Tim wrote:

I have another 2tb drive I bought to replace an older drive that failed,
that I haven't installed yet. I was thinking install that drive. Initialize
it GPT like the other two, and see if I can add it to the mirror. If that
works I can remove one of the other drives from the mirror, reinit it, and
add it back to the mirror. That will give me two good drives again in a
RAID 1, and I can reinit the last one and use it to replace the other
failed drive.

If that doesn't work, I will back up the RAID drive to the new disk,
totally destroy the existing raid, and create a new one.


Just curious, what are your goals for using RAID 1? I've tried a few
RAID implementations over the years and always abandoned them rather
quickly. Most were simply too much trouble, too fragile, or too slow
(read, write, or both).

Other than this current failure, how has it been working for you?



Here's my standard post on the subject:

RAID 1 (mirroring) is *not* a backup solution. RAID 1 uses two or
more drives, each a duplicate of the others, to provide redundancy,
not backup. It's used in situations (almost always within
corporations, not in homes) where any downtown can't be tolerated,
because the way it works is that if one drive fails the other takes
over seamlessly.

Although some people thing of RAID 1 as a backup technique, that is
*not* what it is, since it's subject to simultaneous loss of the
original and the mirror to many of the most common dangers threatening
your data--severe power glitches, nearby lightning strikes, virus
attacks, theft of the computer, etc. Most companies that use RAID 1
also have a strong external backup plan in place.

"Why RAID is (usually) a Terrible Idea"
http://www.pugetsystems.com/articles?&id=29


Hi Ken. I agree with you, which is why I'm gently poking around in the
first place. I suspect that the OP perceives a benefit where one might
not exist, but I'm willing to listen. I have no plans to repeat my RAID
experiments here.

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