Thursday, February 14, 2013

Drives order in Storage Cells


Oracle changed the disk order in the Exadata Storage Server from columnar to row.
Old order:

 

New order:

 

 
The drives in the Exadata Storage Server with Sun Server X3-2L Servers are numbered from left to right in each row. The drives in the bottom row are numbers 0, 1, 2, and 3. The drives in the middle row are numbers 4, 5, 6, and 7. The drives in the top row are numbers 8, 9, 10, and 11.

The drives in the Exadata Storage Server with Sun Fire X4270 M2 Servers and earlier servers were numbered from the lower left to the top, such that the drives in the leftmost column were 0, 1, and 2. The drives in the next column were 3, 4, and 5. The drives in the next column were 6, 7, and 8. The drives in the rightmost column were 9, 10, and 11. The following table shows the disk layout for the hard disk drives in Exadata Storage Server with Sun Server X3-2L Servers and Exadata Storage Server with Sun Fire X4270 M2 Servers.

 

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