Monday, 20 February 2017

Tricky Storage Area Networks Questions and Answers

 21. What is LUN Masking?
A method used to create an exclusive storage area and access control. And this can be achieved by storage device control program.

22. What is WWN?
WWN is a 64bit address that is hard coded into a fiber channel HBA and this is used to identify individual port (N_Port or F_Port) in the fabric.

23. What is metaLUN?
A metaLUN is a type of LUN whose maximum capacity can be the combined capacities of all the LUNs that compose it. The metaLUN feature lets you dynamically expand the capacity of a single LUN (base          LUN) into a larger unit called a metaLUN. You do this by adding LUNs to the base LUN. You can also add LUNs to a metaLUN to further increase its capacity. Like a LUN, a metaLUN can belong to Storage Group, and can participate in Snap View, Mirror View and SAN copy sessions. MetaLUNs are supported only on CX-Series storage systems. A metaLUN may include multiple sets of LUNs and each set of LUNs is called a component. The LUNs within a component are striped together and are independent of other LUNs in the metaLUN.

24. EMC control center 5.1
The EMC Control Center Web Console uses [Port : 10799] data stored in the Repository to monitor your storage-attached network and manageControlCenter alerts remotely through a Web browser

25. What Is Emc Power path?
EMC PowerPath is a server-resident software solution that enhances performance and information availability. It integrates multiple path I/O capabilities, automatic load balancing, and path failover      functions into one comprehensive package for use on open server platforms connected to Symmetrix enterprise storage systems. PowerPath enables you to do more work in a shorter time so you can serve             more customers, run more applications, and exploit more business opportunities.

26. What is a HBA?
Host bus adapters (HBAs) are needed to connect the server (host) to the storage.

27. What is SAN fabric?
SAN fabric is a hardware device that connects workstations and servers to storage devices in a SAN network. It uses the Fibre Channel switching technology to connect a server to a storage device. The SAN fabric offers a high-speed dedicated network including high availability features, very low latency, and high throughput.

28. What is zoning?
Fabric management service that can be used to create logical subsets of devices within a SAN. This enables portioning of resources for management and access control purpose.

29. What are the two major classification of zoning?
Two types of zoning are
a) Software Zoning
b) Hardware Zoning

30. What are different levels of zoning?
a) Port Level zoning
b) WWN Level zoning
c) Device Level zoning
d) Protocol Level zoning
e) LUN Level zoning


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