Where is LUN masking configured?

Where is LUN masking configured? (Choose two.)

A.
on the Fibre Switch

B.
on the host

C.
on the storage processor

D.
on the Ethernet switch

E.
on the firewall

Explanation:
LUN Masking in a SAN

There are three places where LUN Masking can be implemented. The first is in the
storage, the second is in the servers [the host], and the third is either in a device through
which all of the I/O passes or the SAN itself, [the switch]. Each of these has its benefits.
In practice, LUN Masking at a customer site is implemented in multiple ways reflecting
the different methods used by each vendor.

To implement LUN Masking in the switch would require that a time consuming table
look-up be performed that is not currently possible within Implementing LUN Masking
due to memory constraints on the fibre channel switch ASIC. This means that all of the
data would need to be staged to a central cache before being forwarded on. This is simply
not possible with today’s technology without increasing the latency by a factor of 10 to
100 times.

Therefore the only practical place to perform LUN masking is on the host or on the
storage processor, (B & C).