When server is booting from SAN, which command verifies the PLOGI sessions with the target?

The correct answer is B. Lunlist. Lunlist is correct because it displays the LUNs (Logical Unit Numbers) visible to the server from the storage target - and LUNs can only be discovered after a successful PLOGI (Port Login) session has been established between the server's HBA and the target port. If PLOGI had fai

Troubleshoot Cisco UCS Storage

Question

Options

ALunmap
BLunlist
CFCMap
DFCIist

How the community answered

(24 responses)

B
88% (21)
C
8% (2)
D
4% (1)

Explanation

Lunlist is correct because it displays the LUNs (Logical Unit Numbers) visible to the server from the storage target - and LUNs can only be discovered after a successful PLOGI (Port Login) session has been established between the server's HBA and the target port. If PLOGI had failed, no LUNs would appear, making this command the practical verification tool for active target sessions during SAN boot.

Why the distractors are wrong:

A. Lunmap - Used to map or assign LUNs to hosts, a configuration action rather than a session verification command.
C. FCMap - Relates to FlashCopy or zone mapping functions, not Fibre Channel login session status.
D. FCList - May enumerate FC ports or devices, but does not specifically confirm PLOGI session establishment with a target.

Memory tip: Think "LUNs only List after Login" - if Lunlist returns results, the PLOGI handshake with the target already succeeded. No login = no LUNs = empty list.

Topics

#SAN Boot#PLOGI Sessions#Fibre Channel#Storage Verification

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