How does the VNX handle LUN ownership changes so that the access path to the LUN is available to both SPs simultaneously?

The correct answer is C. By using ALUA Failover Mode. ALUA (Asymmetric Logical Unit Access) is a request forwarding implementation. In other words, the LUN is still owned by a single SP however, if I/O is received by an SP that does not own a LUN, that I/O is redirected to the owning SP. It 's redirected using a communication…

Understand Data Domain Architecture and Functionality

Question

Options

ABy the host software being aware of SP ownership
BBy the SPs sharing ownership of the LUNs
CBy using ALUA Failover Mode
DBy the LUN being trespassed.

How the community answered

(20 responses)

A
5% (1)
B
15% (3)
C
75% (15)
D
5% (1)

Explanation

ALUA (Asymmetric Logical Unit Access) is a request forwarding implementation. In other words, the LUN is still owned by a single SP however, if I/O is received by an SP that does not own a LUN, that I/O is redirected to the owning SP. It 's redirected using a communication method to pass I/O to the other SP.

Topics

#LUN ownership#ALUA failover mode#SP access path#trespass

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