Database Software

Announcement

For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle.com. Technical questions should be asked in the appropriate category. Thank you!

Interested in getting your voice heard by members of the Developer Marketing team at Oracle? Check out this post for AppDev or this post for AI focus group information.

Disk controller and failgroup and LUN

N_RajJul 24 2013 — edited Jul 30 2013

Hi,

I read about Failgroup of ASM.I am confused.Please clear it.

1,Any one of the disk(/devices/diska1) is failed(due to hardware issues) in a failure_group_1.We couldn't the second disk in the group until repair.Is my understanding is right?

CREATE DISKGROUP disk_group_1 NORMAL REDUNDANCY

FAILGROUP failure_group_1 DISK

'/devices/diska1' NAME diska1,

'/devices/diska2' NAME diska2

FAILGROUP failure_group_2 DISK

'/devices/diskb1' NAME diskb1,

'/devices/diskb2' NAME diskb2;

2,It's confusing " An example of a failure group is a set of SCSI disks sharing the same SCSI controller " The below link

http://mirrors.e21.cn/Oracle%20Database%2010g%20Release%202%20Documentation%20Library/server.102/b14196/asm002.htm

What is the meaning of it?

3,We use SAN.I don't have much knowledge in Storage.Usually OS people says "LUN".I don't know about it.

How to check/Ask does the disk have seperate controller in a disk?Please anyone explain me briefly.

Br,

Raj

Locked Post

New comments cannot be posted to this locked post.

Locked on Aug 27 2013

Added on Jul 24 2013

#automatic-storage-management, #performance-availability

2 comments

872 views