If you use NORMAL ASM redundancy for all of your disk groups in conjunction with ASM failure groups spread across two Exadata cells, under which of the following scenarios will you maintain data…

The correct answer is A. A single disk failure in a single cell B. Simultaneous failure of multiple disks in a single cell D. Complete failure of a single cell. The prescribed configuration may provide protection against failure scenario 3 if, and only if,there are no data extents mirrored to both of the failed disks. To guarantee data availability in cases where simultaneous failures affect two cells, you must use HIGH ASM redundancy…

Exadata Database Machine Architecture

Question

If you use NORMAL ASM redundancy for all of your disk groups in conjunction with ASM failure groups spread across two Exadata cells, under which of the following scenarios will you maintain data availability?

Options

AA single disk failure in a single cell
BSimultaneous failure of multiple disks in a single cell
CSimultaneous failure of a single disk in both cells
DComplete failure of a single cell

How the community answered

(38 responses)

A
76% (29)
C
24% (9)

Explanation

The prescribed configuration may provide protection against failure scenario 3 if, and only if,there are no data extents mirrored to both of the failed disks. To guarantee data availability in cases where simultaneous failures affect two cells, you must use HIGH ASM redundancy inconjunction with failure groups spread across at least three Exadata cells

Topics

#ASM normal redundancy#failure groups#disk failure scenarios#data availability

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