Which option allows you to provide security to the data contained in a storage array?

LUN masking is a method used to control and secure access to specific logical unit numbers (LUNs) in a storage array. When LUN masking is implemented, it allows administrators to specify which servers or hosts can access particular LUNs. This ensures that only authorized machines have visibility and access to critical data within the storage environment, providing a layer of security by preventing unauthorized access.

Using LUN masking, sensitive data can remain protected from being accessed by other systems in the network that do not require it, thereby reducing the risk of data breaches. By controlling which hosts can see which LUNs, organizations can enforce data isolation, which is especially important in multi-tenant environments or when compliance with regulations is necessary.

In contrast, trunking, LUN provisioning, and multipathing serve different purposes in a storage environment. Trunking generally refers to combining multiple network links into a single logical link to increase bandwidth and redundancy. LUN provisioning involves allocating storage space to create LUNs for hosts but does not inherently secure data. Multipathing involves creating additional paths to a storage device to improve performance and redundancy but does not address data security directly.