Whether the license file can be imported without stopping services

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Whether the license file can be imported without stopping services:
FAQ-Can the License File Be Imported Without Stopping Services

Other related questions:
If the U1900 has imported a license file, can I decide to not use the license (invalidate the license)?
After a license is imported into the U1900, you can run the config disable license command to invalidate the license. The system uses the default license after the imported license is invalidated. Note: The U1900 license cannot be re-imported after being invalidated. Complete the rollback process in the ESDP system even if the version and user data information do not change. Then apply for and load a new license following the license application procedure.

How Can I Do If Importing a License File Fails?
Importing a license file may fail because of an incompatible tool version, incorrect license file, incorrect network, or incorrect gateway. To rectify the fault, perform the following operations: ? Upgrade the tool version to the desired one. ? Ensure that the license file is correct and the SN used is consistent with that of the storage device. ? If the PC is connected to several networks, disconnect or disable network ports that are not used for deployment. ? Ensure that the gateway vendor is correct: Log in as user support to the file engine using the IP address of the file engine's management network port and execute cat/opt/HS/conf/product.ini to ensure that vendor is huawei and gateway is yes. If the gateway vendor remains incorrect, execute /opt/HS/factory/scripts/n8000_init.sh on each node and set the gateway vendor to HWG using the serial ports. Then restart all nodes and perform the previous operation again.

Impact of removing and installing hard disks without powering off the server
1. LSISAS2208 RAID controller card: If no hot spare disk is configured, the RAID controller card can rebuild data on a new hard disk installed online to replace a faulty hard disk. (The new hard disk must be of the same specifications as the faulty hard disk.) However, if you remove and reinstall a hard disk that is not faulty, the LSISAS2208 RAID controller cannot identify the data on the hard disk. 2. LSISAS2308 RAID controller card: If you remove and install a hard disk without stopping services, the LSISAS2308 RAID controller card can identify data on the hard disk no matter whether the hard disk is new or not.

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