perc 4 dc raid10 , I think

Robert Cope robert at
Sat May 29 09:05:01 CDT 2004

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


-----Original Message-----
From: linux-poweredge-admin at
[mailto:linux-poweredge-admin at] On Behalf Of Frank Singleton
Sent: Friday, May 28, 2004 8:02 AM
To: linux-poweredge at
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 Each pe1750 access 7 disk independant of each

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

He asked me to setup ths disks like this



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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