Whether both the source and target storage systems need licenses for LUN copy

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LUN copy is a data copy technology that quickly transfers data within a device or between devices. LUN copy can be implemented within OceanStor storage systems or between an OceanStor storage system and a Huawei-certified third-party storage system. You only need to purchase a license for the OceanStor storage system at the source end.

Other related questions:
Whether the Dorado series LUN copy feature requires licenses
LUN copy is an optional value-added feature that requires a license.

Whether the Dorado supports LUN copy
All Dorado series storage systems support the LUN copy feature.

What are the differences between a full LUN copy and an incremental LUN copy?
Both copy data from the source LUN to target LUNs. Their difference is: Full LUN copy: It copies all data from the source LUN to target LUNs each time. Incremental LUN copy: When it is started for the first time, it requires an initial synchronization during which all data is copied from the source LUN to target LUNs. For subsequent times, it copies only the changed data from the source LUN to target LUNs.

5500 V3 LUN copy specifications
OceanStor 5500 V3 LUN copy specifications are as follows: Maximum number of LUN copies: 64 Maximum number of destination LUNs: 64 For detailed specifications, see V3R1 Latest Software Specifications.

How do I obtain the license file for the LUN copy feature?
You must purchase a license file individually for the LUN copy feature. If you do not have such a license file, contact Huawei technical support engineers for how to purchase one. If you have, perform the following operations to obtain the license file. 1. Collect the equipment serial number (ESN), license authorization code (LAC), and contract number. You can obtain the contract number from the contract, the LAC from the license certificate delivered with the device, and the ESN in any of the following ways: ? Query the ESN from the nameplate on the device or the device packaging. ? Log in to the ISM. In the General area, view the ESN. ? Log in to the command-line interface (CLI). Run the show system general command to view the SN. 2. Send the collected information to email address license@huawei.com. In the email, you can specify another mailbox for receiving the license file. If another mailbox is not specified, the license file is by default sent to the mailbox that you have used to send the collected information. 3. Download the license file from the specified mailbox. 4. Log in to the ISM and import the license file as instructed in the online help.

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