Pete,
	Try booting up in Manual mode and go into DST and WORK WITH DISK
Configuration.  From there you will see what you need.
Pete
Pete Massiello
iTech Solutions
http://www.itechsol.com
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Pete Helgren
Sent: Wednesday, November 12, 2008 1:52 PM
To: Midrange Systems Technical Discussion
Subject: Mirroring on i5/OS
I thought this would be easy but I must be a little slow this week...
I have my JS12 configured with 4 drives allocated to i5/OS (More 
accurately I have VIOS allocating 4 drives to the JS12 from the 6 
available in the BCS).  Two of which I have configured as part of  
ASP1.  All is well. However, I'd like to get some protection on these 
drives and my understanding was that mirroring is my only option.  So, 
how to I achieve that ?  Disk hardware status shows this:
          Serial                     Resource      Hardware  
ASP Unit  Number          Type Model Name          Status    
  1    1  YWEB5KZWKZRX    6B22  050  DD004         Operational
  1    2  Y9EJAR7L8YMZ    6B22  050  DD003         Operational
          Y384SV9UX3VE    6B22  050  DD001         Operational
          YJA2X8PBPAUR    6B22  050  DD002         Operational
So, as far as I understand it, the two drives that are unallocated could 
be used to mirror the other drives but I don't see any option in SST to 
use these drives in a mirrored arrangement.  Work with Device Parity 
protection show the following menu:
1. Display disk configuration 
2. Include unit in device parity protection              
3. Start device parity protection - RAID 5               
4. Start device parity protection - RAID 6               
5. Start device parity protection - RAID 5 with hot spare
6. Start device parity protection - RAID 6 with hot spare
7. Select parity optimization                            
No mention of mirroring.....
So, how do I mirror these things? I get plenty of hits on mirroring 
"Concepts" in the infocenter but precious little about implementation.  
Running IBM i 6.1 on a JS12.
Pete
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