Need basic RAID info

Jan Meijer jan.meijer at surfnet.nl
Tue Oct 12 02:55:00 CDT 2004


On Mon, 4 Oct 2004, Jan-Frode Myklebust wrote:

> On Mon, Oct 04, 2004 at 08:16:54PM +0200, Jan Meijer wrote:
>>
>> Don't listen to that silly advice.  There is no need to drop that
>> hardware-raid.
>
> Why was that a silly advice? Have you seen how many people have
> problems with I/O errors when using the built in raid controller on
> the PE2650 ? Ref. even with the latest firmware:
>
> 	http://lists.us.dell.com/pipermail/linux-poweredge/2004-September/021821.html
>
> For us this RAID-controller has caused way more problems than faulty
> disks on our PowerEdge servers.

We've been using them without problems for years.  That was my main 
reason for calling the advice silly.

> Even without these problems I would still prefer doing software raid
> because of the simplified monitoring, and for having one set of tools
> for admining all raids, no matter what vendor the server came from.

That is a good argument, if you carry one OS.  When using multiple OSes it 
becomes different.

Jan

-- 
http://www.surfnet.nl/organisatie/jame




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