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<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">All I can say is I’ve been using hardware RAID cards almost exclusively in Linux systems here for the last 7 years and have not lost
a single system due to the concerns raised here. Sure some have gone down due to controller issues in that time but getting them back running hasn’t been a problem. I’m no more concerned about controller hardware failures than I am about drive and DIMM
failures. They occur – your replace the failed parts and move on.<o:p></o:p></span></font></p>
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<p class="MsoNormal"><b><font size="2" face="Tahoma"><span style="font-size:10.0pt;
font-family:Tahoma;font-weight:bold">From:</span></font></b><font size="2" face="Tahoma"><span style="font-size:10.0pt;font-family:Tahoma"> ale-bounces@ale.org [mailto:ale-bounces@ale.org]
<b><span style="font-weight:
bold">On Behalf Of </span></b>Jim Kinney<br>
<b><span style="font-weight:bold">Sent:</span></b> Friday, February 10, 2012 9:36 AM<br>
<b><span style="font-weight:bold">To:</span></b> <st1:PersonName w:st="on">Atlanta Linux Enthusiasts</st1:PersonName><br>
<b><span style="font-weight:bold">Subject:</span></b> Re: [ale] raid suggestions</span></font><o:p></o:p></p>
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12.0pt"><o:p> </o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">On Fri, Feb 10, 2012 at 4:44 AM, Jim Lynch <<a href="mailto:ale_nospam@fayettedigital.com">ale_nospam@fayettedigital.com</a>> wrote:<o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">On 02/09/2012 04:35 PM, Jeff Hubbs wrote:<br>
> May or may not have true-HW-based RAID available.<br>
><br>
> On 2/9/12 3:37 PM, Lightner, Jeff wrote:<br>
>> Hardware based (for true RAID) because it doesn't require CPU cycles.<br>
>><br>
>><br>
>><br>
>><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">>> H<br>
Has the concern about the possibility of the hardware controller<br>
breaking and being out of production been eliminated? At one time I<br>
recall the suggestion that using hardware raid was a bad idea because if<br>
the controller went OTL and there wasn't another available you'd get to<br>
start from scratch. I believe this concern was with the controllers on<br>
the MB however.<br>
<br>
That of course can be alleviated by proper backups. I always thought<br>
that was somewhat meaningless in a lot of cases 'cause I'd think many<br>
raid installations were to support a backup set of drives. Not all, of<br>
course, but surely that's a common purpose for a raid set.<o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt"><br>
Even good hardware cards can fail. It's become better with modern raid cards writing some data to the drives about configuration. However it still is a huge SPoF waiting to happen. NOTHING beats the ability to pull out the drives and put them into a different
chassis entirely, point bios to the boot drive and your're back up and running.<br>
<br>
In fact, with software raid, it's easy to do a full backup by adding a large hard drive as a single mirror device for a system.<br>
<o:p></o:p></span></font></p>
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<span class="hoenzb">Jim.</span></span></font><o:p></o:p></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
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<br clear="all">
<br>
-- <br>
-- <br>
James P. Kinney III<br>
<br>
As long as the general population is passive, apathetic, diverted to consumerism or hatred of the vulnerable, then the powerful can do as they please, and those who survive will be left to contemplate the outcome.<br>
- <i><span style="font-style:italic">2011 Noam Chomsky<br>
<br>
<a href="http://heretothereideas.blogspot.com/" target="_blank">http://heretothereideas.blogspot.com/</a></span></i><o:p></o:p></span></font></p>
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