CAS-002 · Question #592
A UNIX administrator notifies the storage administrator that extra LUNs can be seen on a UNIX server. The LUNs appear to be NTFS file systems. Which of the following MOST likely happened?
The correct answer is C. The HBA allocation is wrong. A UNIX server unexpectedly displaying NTFS-formatted LUNs is a clear indicator that SAN zoning or LUN masking has been misconfigured, granting the wrong host access to storage volumes intended for Windows systems.
Question
A UNIX administrator notifies the storage administrator that extra LUNs can be seen on a UNIX server. The LUNs appear to be NTFS file systems. Which of the following MOST likely happened?
Options
- AThe iSCSI initiator was not restarted.
- BThe NTFS LUNs are snapshots.
- CThe HBA allocation is wrong.
- DThe UNIX server is multipathed.
How the community answered
(21 responses)- A5% (1)
- B14% (3)
- C62% (13)
- D19% (4)
Why each option
A UNIX server unexpectedly displaying NTFS-formatted LUNs is a clear indicator that SAN zoning or LUN masking has been misconfigured, granting the wrong host access to storage volumes intended for Windows systems.
Failing to restart the iSCSI initiator would result in connectivity failures or stale path states, not the appearance of additional foreign-filesystem LUNs.
Snapshots inherit the same file system type as the source volume and would not cause NTFS volumes to appear on a UNIX host that was not already allocated those LUNs.
In SAN environments, HBA zoning and LUN masking control which hosts are permitted to see specific storage volumes. An incorrect HBA allocation can cause a UNIX host to receive visibility into LUNs that are formatted with NTFS and assigned to Windows servers. This cross-host LUN exposure is a textbook symptom of improper zoning or masking configuration.
Multipathing configures redundant I/O paths to LUNs already assigned to the server; it does not expand LUN visibility to volumes belonging to other hosts.
Concept tested: SAN HBA zoning and LUN masking misconfiguration
Source: https://docs.netapp.com/us-en/ontap/san-admin/lun-masking-zoning-concept.html
Topics
Community Discussion
No community discussion yet for this question.