<div class="gmail_quote">On Mon, Mar 28, 2011 at 1:07 PM, DaWorm <span dir="ltr"><<a href="mailto:daworm@gmail.com">daworm@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div class="im">> RAID5 can only survive a single drive failure.<br>
<br>
</div>My old array, on a 3ware hardware card, could survive a two drive<br>
failure, since I had one drive as a hot spare, and it did so on at<br>
least three occasions over its 10 year life.<br>
<br>
My current mdadm setup doesn't have the hotspare at the moment (I<br>
needed the drive for some sneakernetting) but it does support it.<br></blockquote></div><br>While MDADM does support "hot spare" and other amazing features, RAID5 still isn't the best idea. Even the rebuild process with a hot spare in a RAID5 can suffer another drive failing. That would kill the array.<br>