Inspecting the current system and whether possbile to expand the the LUN capacity on OceanStor Dorado5 000 V3

[Root cause]

It’s a consultation question.

[Solution]

After we've inspected your system and scenario step by step, first we confirmed that your system was in a healthy status.

Secondly, there was sufficient remaining space in the current storage pool.

Thirdly, you didn’t use the 'Smartmigration' advanced feature on these remote replication LUNs.

So you can directly expand them online. Here are the standard steps to which you can refer: https://support.huawei.com/hedex/hdx.do?docid=EDOC1100004911&id=EN-US_TOPIC_0117274448&text=Expanding%25252520LUN%25252520Capacity&lang=en.