RAC Std: where to put 3rd voting disk with only 2 Storage Arrays

  • From: "bkaltofen@xxxxxx" <bkaltofen@xxxxxx>
  • To: oracle-l@xxxxxxxxxxxxx
  • Date: Tue, 18 Dec 2007 14:58:17 +0100

Hello,

we are about to install a RAC Standard Edition on two Solaris 10 Servers with two storage arrays. The arrays are attached to both servers with FCAL multi pathing. To keep running if one array fails, we would like to virtualize/mirror the storage using Sun Volume Manager (SVM).

Can we put the (3) voting disks and the OCR on multi host meta devices (MD) created with SVM?

If not, where do we put the third voting disk?
--> We can mirror the data using ASM disk groups. We can put 1 OCR on a slice of each array. We can put 1 voting disk on a slice of each array, too. But, if we put one voting disk on array1 and two VD's on array2 we would lose the RAC, if array2 fails.

Any sugestions?

Bjoern
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