Which three of the components could be used in a ZFS storage pool, but are not recommended configurations?
A.
A file on a UFS file system
B.
A Veritas Volume Manager (VxVM) volume
C.
A LUN In a hardware RAID array
D.
A disk slice from an SMI labeled disk
E.
A Solaris Volume Manager (SVM) volume
F.
An EFI labeled disk
Explanation:
A: ZFS also allows you to use UFS files as virtual devices in your storage pool. This feature is aimed primarily
at testing and enabling simple experimentation, not for production use. The reason is that any use of files relies
on the underlying file system for consistency. If you create a ZFS pool backed by files on a UFS file system,
then you are implicitly relying on UFS to guarantee correctness and synchronous semantics.
However, files can be quite useful when you are first trying out ZFS or experimenting with more complicated
layouts when not enough physical devices are present. All files must be specified as complete paths and must
be at least 64 Mbytes in size.
B, E: You can construct logical devices for ZFS using volumes presented by software-based volume managers,
such as Solaris Volume Manager (SVM) or Veritas Volume Manager (VxVM). However, these configurations
are not recommended. While ZFS functions properly on such devices, less-than-optimal performance might be
the result.