There are five major misconceptions about controller storage virtualization

Virtualization is too complex

Early storage virtualization based on switches and networks requires that heterogeneous LUNs (logical unit numbers) be mapped to a universal virtual LUN format to be able to be displayed on the host system. This LUN remapping effort introduces another layer of operations, which increases management complexity and hinders the application of this approach. However, rapid innovation in storage virtualization quickly solves the problem by using virtualization based on storage control units, which eliminates the need for remapping to complete the virtualization of physical LUNs. By adopting this approach, LUNs are configured on external storage-system rows based on the respective vendor-specific methods. Although they are already connected to the host server, these LUNs can then be connected to the Virtualization control unit via FC ports. Second, the software on the control unit discovers the LUNs on the FC ports and renders them to the application server through the control cell's cache, as if the LUN were its internal LUN, and by connecting to the control unit and taking full advantage of the available global cache and global namespaces, Virtualized storage systems can also maximize the performance of other systems by leveraging larger caches.

Data Migration Tool only

Storage virtualization enables a more efficient IT environment, far beyond data migration or deployment for a test environment. It's not just a machine or a system, it's the foundation of a real storage service platform. A controller based virtualization can bring advanced replication capabilities and allocate tiered storage management services to heterogeneous files, objects, or block storage assets. In addition, it enables the classification of data and then moves it efficiently and continuously to the appropriate tier of storage to ensure that the application is always available.

Applies only to Servers

A comprehensive virtualization strategy that covers virtual servers and virtual storage maximizes the management and configuration of your IT resources. The combination of server virtualization technology and storage pool technology can improve management in a number of ways that can help increase flexibility, reduce power and cooling requirements, and enable end users to use IT resources more efficiently.

Have a security threat

While storage virtualization may spawn a new threat layer, the virtualization of storage controllers does not rely on the network to gain connectivity. Another common security concern associated with storage virtualization is denial of service attacks or service demotion. A controller based virtualization can support the creation of dynamic partitions that control the use of shared resources such as caching. During spikes in critical applications, users can also assign more caches and higher-priority ports. Finally, since many systems have multiple processors, and some even have more than 128 processors, virtualization by using a controller, the remaining 127 can continue to work when one processor fails.

Can only use a single manufacturer's products

Because virtualization methods require complex LUN mapping, single vendor limitations become a common concern. This is mainly because when users map LUNs from different heterogeneous systems, they don't want to change or start over again. A mapping table from a vendor's system simplifies this process, but users will be limited to using only one vendor's products. Not all virtualization technologies require this level of complex LUN mapping work to raise related LUN management issues. If you choose to use a controller based virtualization, users will be able to map the LUN directly to the storage controller. When this is done, the user will no longer need the mapping table or subsequent LUN management work.