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ASM mirroring [message #613908] Tue, 13 May 2014 08:25 Go to next message
applehalf
Messages: 3
Registered: May 2014
Junior Member
Hello, my friends!
I have a problem with my ASM.
I have one disk group (redundancy - normal) with four disks in it.
Also I have another four disks, which have same size, as first disks.
I want to add my new disks in disk group so that the data from the old disk will NOT crawled to new disks, because I need a full mirror on the new disks from old disks for testing.
Is it real to do it? If it is real, please help me to resolve my problem.

[Updated on: Tue, 13 May 2014 08:26]

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Re: ASM mirroring [message #613910 is a reply to message #613908] Tue, 13 May 2014 08:28 Go to previous messageGo to next message
John Watson
Messages: 4693
Registered: January 2010
Location: Global Village
Senior Member
You'll need to put four disks into one failgroup, and four disks into another failgroup. At the moment, each disk is (by default) in a failgroup of its own. You may have to shuffle disks around a bit and rebalance a few times to get to your desired end point.

--update:
I forgot to do the moderator bit:

Welcome to the forum. Please read our OraFAQ Forum Guide and please read How to use [code] tags and make your code easier to read

[Updated on: Tue, 13 May 2014 08:30]

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Re: ASM mirroring [message #613960 is a reply to message #613910] Wed, 14 May 2014 01:18 Go to previous messageGo to next message
applehalf
Messages: 3
Registered: May 2014
Junior Member
Thanks for answer.
Is it real to change disk's failgroup in one command without removing disk from diskgroup?
Re: ASM mirroring [message #613965 is a reply to message #613960] Wed, 14 May 2014 01:33 Go to previous messageGo to next message
John Watson
Messages: 4693
Registered: January 2010
Location: Global Village
Senior Member
Look up the syntax of the ALTER DISKGROUP command and you'll be able to work it out.

If you aren't sure, show what ideas you have tried out. And do not be frightened of experimenting: ASM will not let you damage anything, no matter what you attempt.
Re: ASM mirroring [message #613973 is a reply to message #613965] Wed, 14 May 2014 02:00 Go to previous messageGo to next message
applehalf
Messages: 3
Registered: May 2014
Junior Member
"add_disk_clause

You cannot use this clause to change the failure group of a disk. Instead you must drop the disk from the disk group and then add the disk back into the disk group as part of the new failure group."


That's all, that I find.

[Updated on: Wed, 14 May 2014 02:12]

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Re: ASM mirroring [message #613980 is a reply to message #613973] Wed, 14 May 2014 02:25 Go to previous message
John Watson
Messages: 4693
Registered: January 2010
Location: Global Village
Senior Member
applehalf wrote on Wed, 14 May 2014 08:00
"add_disk_clause

You cannot use this clause to change the failure group of a disk. Instead you must drop the disk from the disk group and then add the disk back into the disk group as part of the new failure group."


That's all, that I find.
That sounds reasonable. As I said, you may have to do this in more than one operation, and rebalance more than once.
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