How to directly view the files in ISCSI Lun

[Spectris]

My device is FAS2552, running 8.2.2P2 7-Mode version, I mounted the storage to my file server via ISCSI, and now my file server system cannot be started, is there any way to directly view the files stored in the storage?
I try to mount this storage via ISCSI on another server, but it always prompts that the disk needs to be formatted.

[Ontapforrum]

From NetApp's perspective, LUN is just a pseudo 'file', what's inside this 'file' can ONLY be viewed by the  external HOST connected to it (WIN/*NIX).

Which Host/Filesystem was it serving ? Have you tried all the file-system related chkdsk stuff?

https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/NTFS_file_system_inconsistency_on_LUN