Solved

How do configure Raid 1+0 in Common Array Manager?

Posted on 2007-11-27
5
1,638 Views
Last Modified: 2013-12-21
I am configuring a Storedge 6130 Array on Solaris 10. In the manual it mentions that when creating a Raid 1 volume with more than 2 disks the firmaware will automatically create a Raid 1+0 Configuration, yet in Common array manager it shows the virtual disk as Raid 1 and not Raid 1+0, Is the disk actually raid 1+0 or is there something else i need todo to verify that Raid 1+0 disks are been created

thanks for you assistance
0
Comment
Question by:vmp659
5 Comments
 
LVL 18

Expert Comment

by:Andrej Pirman
ID: 20360053
RAID 1+0 basically means that you create mirroring on top of striped arrays. So my oppinion is if you add 2 drives to existing 2 drives RAID 1 array, they will NOT be preconfigured to RAID 1+0 (=RAID 10), since it would need to migrate all data on underlaying RAID 1 to RAID 0 and build RAID 1 on top of it. Your Storedge 6130 is capable of such an operation, but I doubt it is automatic, since automatic preconfiguration from RAID 1 to RAID 1+0 would mean thread to your storage plan.

It's just my oppinion, not a fact, so don't rely on it.
0
 

Author Comment

by:vmp659
ID: 20360440
Thanks,  If 4 disks are required for Raid 1+0 minimum,  I  assume that when you select 4 Disks  the firmware is creating a Mirror and striping across the Disks as there is not an option to select which of the 2 pairs are mirrored together even though it still shows that the Virtual Disk is Raid 1?. thanks for the input
0
 
LVL 22

Accepted Solution

by:
blu earned 500 total points
ID: 20360658
It should do it automatically. You could use the sscs command to list the virtual disks. If the resulting disk volume
size is half of the total disks you added, but greater then one disk, then you have RAID 1+0.
0
 
LVL 55

Expert Comment

by:andyalder
ID: 20361189
It sounds like a GUI thing. HP's array configuration utility displays RAID 1 as RAID 10 even though there are only 2 disks.

You can always verify RAID 1+0 from RAID 0+1 by taking several disks out and seeing which one crashes since with 2 stripes mirrored you just to kill both stripes. RAID 1 over more than 2 disks is very rare, it can be done even with an odd number of disks but I know of only one system that does it.
0
 

Author Comment

by:vmp659
ID: 20361547
Thanks thats what i have
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The article will include the best Data Recovery Tools along with their Features, Capabilities, and their Download Links. Hope you’ll enjoy it and will choose the one as required by you.
Concerto Cloud Services, a provider of fully managed private, public and hybrid cloud solutions, announced today it was named to the 20 Coolest Cloud Infrastructure Vendors Of The 2017 Cloud  (http://www.concertocloud.com/about/in-the-news/2017/02/0…
Learn how to navigate the file tree with the shell. Use pwd to print the current working directory: Use ls to list a directory's contents: Use cd to change to a new directory: Use wildcards instead of typing out long directory names: Use ../ to move…
This video shows how to set up a shell script to accept a positional parameter when called, pass that to a SQL script, accept the output from the statement back and then manipulate it in the Shell.

861 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question