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Date:      Wed, 30 Jan 2013 01:18:52 -0700
From:      Modulok <modulok@gmail.com>
To:        Artem Kuchin <matrix@itlegion.ru>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Software raid VS hardware raid
Message-ID:  <CAN2%2BEpbbKDZVyxhsAwVGQhBkYrZ52Fz9HCpVeMFHUFTY4OcNQw@mail.gmail.com>
In-Reply-To: <5107A500.4030902@itlegion.ru>
References:  <5106E301.4070707@itlegion.ru> <ke7v7a$r0d$1@ger.gmane.org> <5107A500.4030902@itlegion.ru>

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> My other concern is what happens when one drive goes down if we use
> gmirror? Is it completelly transparent
> and bad drive can be hot swapped while server is running and rebuild
> started?
> I am thinking now about gpt+gmirror (including boot and swap)
>
> Artem
>

Yes. In fact, you can test this by unplugging the data or power cable to a
drive while the server is running. I've done this with consumer sata drives
and, so far, not had a problem. The server stays up and running and disk access
is not interrupted. I can then plug in a new disk and add it to the gmirror and
the array rebuilds.

I've not tried this with gpt, so I can't comment there.
-Modulok-



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