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List:       linux-poweredge
Subject:    RE: perc 4 dc raid10 , I think
From:       "Robert Cope" <robert () gonkgonk ! com>
Date:       2004-05-29 14:03:53
Message-ID: 6F31C4A42DDA6344B494456B48A72977651C () squeak ! bytestacker ! local
[Download RAW message or body]

Pull a few drives out and see if it keeps going!

robert 

-----Original Message-----
From: linux-poweredge-admin@dell.com
[mailto:linux-poweredge-admin@dell.com] On Behalf Of Frank Singleton
Sent: Friday, May 28, 2004 8:02 AM
To: linux-poweredge@dell.com
Subject: perc 4 dc raid10 , I think 

Hi ,

A PERC 4 raid 10 question.

We have 2 PE1750's with PERC 4 DC and a  powervault 220s. I have split 
it via the slider switch at the
back to make  2 X 7.ie Each pe1750 access 7 disk independant of each
other.


They will be dbase servers running mysql on rh es3.

The aim is to  run each as raid 1+0 (mirror then stripe).

ie: Mirror 2 pairs, then stripe across them.

The disks are 70G each .

Now I ran trough a raid 10  setup with a helpful dell rep, and
I think I got the massage accross that I wanted raid 1+0 not
0+1.

He asked me to setup ths disks like this

A00-00
A00-01

A01-00
A01-00

I can see that the final disk size is approx 140G, visible as /dev/sdb
according my boot log (dmesg).

My question is:

How can I confirm that I have raid1+0 and not raid 0+1 ?

I dont want to find out later ??

Thanks / Frank




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