Controller abstracts all the physical disks to a single
virtual disk and hence all servers will be able to see all the hard disk. Error
generated by one server can impact the complete disk subsystem. LUN masking is
the method by which servers will get access to the space they are allowed to.
Server cannot read and write on the LUN allocated to other server.
LUN is a kind of filter which restricts the access
between server and storage. There are two types of LUN masking:-
1.Port
based LUN masking:- In port-based based LUN masking server will see all
the disks attached to the storage port. It is not recommenced as there is no
restriction between server and hard disks.
2.Server
based LUN Masking:- Server will see only its own disk. It will not allow
server to see or access the other disks.
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