Storage Management (ASM ACFS DNFS ODM) (MOSC)

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Extending a LUN for ASM rather than allocating a new LUN (Oracle RAC 11g on OEL6.3)

edited Mar 18, 2013 5:24AM in Storage Management (ASM ACFS DNFS ODM) (MOSC) 20 commentsAnswered
I am wondering if anyone has run into this issue and has any thoughts on issues doing this. 

I am running oracle 11.2.0.3 RAC with ASM on OEL 6.3.  I have 1 LUN sliced in half with half for /u03 and the other half for ASM.  So in ASM I have my +DATA diskgroup which contains: Vote, OCR and database files.

I recently asked for another LUN to add to ASM.  Rather than give me a new LUN, the SAN admin extended my existing LUN....  My concern is when the SA slices off the added space and it rewrites the master boot record, that it will either a) not have enough space to write it and loose everything OR b) it will write over something in the raw space messing up ASM, the vote, or the OCR.

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