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Question 21 - D-PWF-DS-23 discussion

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A customer is trying to place an SDS into Protected Maintenance Mode, and the operation fails What two scenarios can cause the failure'' (Select 2)

A.
Another node in a different protection domain is in protected maintenance mode
Answers
A.
Another node in a different protection domain is in protected maintenance mode
B.
Another node in the same protection domain is In maintenance mode
Answers
B.
Another node in the same protection domain is In maintenance mode
C.
Another node has failed in the same protection domain
Answers
C.
Another node has failed in the same protection domain
D.
Another node in a different protection domain is in instant maintenance mode
Answers
D.
Another node in a different protection domain is in instant maintenance mode
Suggested answer: B, C

Explanation:

Placing an SDS into Protected Maintenance Mode (PMM) can fail due to several scenarios, two of which are:

Another node in the same protection domain is in maintenance mode: PMM is designed to ensure data protection and availability during maintenance activities. If another node within the same protection domain is already in maintenance mode, initiating PMM on an additional node could compromise the protection domain's ability to maintain data availability and redundancy1.

Another node has failed in the same protection domain: The failure of a node within the same protection domain can prevent the initiation of PMM for another node. This is because the system needs to ensure that there is sufficient redundancy and that data protection is not jeopardized by having multiple nodes in a non-operational state within the same protection domain1.

These scenarios are based on the operational principles of PowerFlex's maintenance modes, as described in the Dell PowerFlex documentation. The system's priority is to maintain data protection and availability, and therefore, it restricts the ability to enter PMM under conditions that could threaten these objectives1.

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asked 16/09/2024
Heidar Heidari nia
33 questions
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