[NTLUG:Discuss] Dell Server with PERC RAID

[Cameron, Thomas]

RAID 0+1 (often called RAID 10) is two RAID 0 arrays which are mirrored (RAID 1).  Gives you the benefit of fast striping plus the fault tolerance of mirroring.  It's just ghastly expensive.

--
Thomas Cameron, RHCE, CNE, MCSE, MCT
Assistant Vice President
Linux Design and Engineering
Bank of America

-----Original Message-----
From: Richard Geoffrion [mailto:ntlug at rain4us.net]
Sent: Thursday, September 25, 2003 4:35 PM
To: NTLUG Discussion List
Subject: Re: [NTLUG:Discuss] Dell Server with PERC RAID


Paul Drew wrote:
> I would actually like to get some feedback and advice from people who
> have done this as well. I am actually installing linux on a Dell
> PowerEdge 4200 as I am writing this, and I am wondering about how to
> go about the raid stuff in linux. Suggestions greatly appreciated.
> Thanks
>

I installed slackware 8.1 and then re-installed slackware 9.0 on a Dell
Poweredge 2400 that had a RAID controller that gets identified/uses the
MEGARAID driver.

Other than the fact that slackware doesn't come with a kernel that sees both
the adaptec 7800 scsi CD  AND the RAID controller (I used a temporary IDE
controller for the CDROM) the installation went pretty smooth. There is no
raid configuration in linux as this is a HARDWARD raid solution. There are
no /etc/raidtab files to edit.

I have noticed that my dual ultra133 IDE software RAID-1 setups seem to be
faster than the MEGARAID RAID-5 disk channel.  I am not too much of a fan of
straight RAID-5 as it has historically been slower.  Now, if you were to
DUPLEX your RAID-5 setup..now THAT would be grand! (what's that called??
raid10?)

-- 
richard


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