While migrating the data using UVM how the IO flow happens?
This image below should help you understand the same
Thanks for your reply.
While mapping external lun to the local storage system. Do we need to unmap from the host which is connected to the external storage system?
Yes, you should disconnect the host from the external storage system before connecting the external storage system to the local storage system. The reason is so that you don't have two hosts (previous host and local storage system) writing to the same volumes on the external storage system.
Thanks for your quick reply. I would like to know best practices while allocating storage to the cluster servers?
Best practices is to use 1 host group per storage port. For example, let's say you have a 3-node cluster. HBA port 1 of all 3 servers is zoned to storage port CL1-A. HBA port 2 of all 3 servers is zoned to storage port CL2-A. You will want to create 1 host group in CL1-A and include the WWNs of HBA port 1 of all 3 servers. Then do the same on CL2-A with WWNs of HBA port 2.
Also don't forget to set the appropriate Host Mode and Host Mode Options according to the OS.
Thanks for clarifying for question. May i know how do we analyze the performance in Hitachi and what needs to be check when we come across any performance related issues?
Continuing to the above question...Can you recommend me any best practices documentation interms of performance related?
Dear Bhaskar - use Hitachi Tuning Manager to monitor and analyze performance. As far as best practices and documentation, please see HDS: Hitachi Resources - Search Resources by Industry or Content. You can filter for products and applications.
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