When initially setting up an Exadata Storage Server, in what order should you run the following
Procedures?
A.
ALTER CELL, CREATE CELLDISK, CREATE GRIDDISK, CALIBRATE
B.
ALTER CELL, CREATE GRIDDISK, CREATE CELLDISK, CALIBRATE
C.
CREATE GRIDDISK, CREATE CELLDISK, CALIBRATE, ALTER CELL
D.
CALIBRATE, CREATE GRIDDISK, CREATE CELLDISK, ALTER CELL
E.
CALIBRATE, ALTER CELL, CREATE GRIDDISK, CREATE CELLDISK
Explanation:
Note on order of the create commands: #
cellcli -e alter cell : : This CELLCLI command startup all services
CREATE CELLDISK ALL—This CELLCLI command automatically creates celldisks on all
available logical unit numbers (LUNs).
CREATE GRIDDISK ALL PREFIX=prefix—This CELLCLI command automatically creates grid
disks on all available Exadata cell disks.
Each Exadata storage cell has 12 disks.- One physical disk is called LUN and is also called cell
disk.- A grid disk is part of a cell disk.
So the Cell disk must be created before the grid disk.http://vijaydumpa.blogspot.com/2011/01/exadata-v2-storage-server-cell-node.html
The “calibrate” command, which is part of the Exadata storage “cellcli” interface, is used to test
the capabilites of the underlinying components of Exadata storage. The throughput and
IOPS of both the drives and Flash modules can be tested at any point to see if they are performing
up to expectations.
calibrate” command should be executed after celldisk and grid disk are created.
http://glennfawcett.wordpress.com/category/exadata/