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Oracle Database Appliance (ODA) (MOSC)

Oracle recommends an odd number of Voting Disks- Basic Concept

Jul 23, 2021 12:04PM in Oracle Database Appliance (ODA) (MOSC) 1 comment

A node must be able to strictly access more than half of the voting disks at any time

è In case of 1 voting disk available and it goes down/corrupted/failure, immediately the cluster stops functioning.

è More than half of the voting disks configured must always be available and responsive for Oracle Clusterware to operate properly.

è We must configure at least ‘2N+1′ voting disks to survive from loss.

Few Scenario:

When you have a number of voting disks available

Read More: Basic Concept of Voting Disk

1 voting disk and you lose it, the cluster stops functioning.
2 voting disk and 1 voting disk you lose, as per majority rule cluster stop functioning

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