Method used to migrate and install storage devices

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Method used to migrate and install storage devices:
1. Stop services of the host corresponding to the storage system (the host operating system is Linux, AIX, and Solaris).
Determine whether services are stopped by checking on the host and storage array sides.
Check whether services on the host side have been stopped: On the CLI of the host, run iostat -xt 1 to check whether I/O values of corresponding LUNs are 0. If the value is 0 within five minutes, services on the host side have been stopped. I/O values of /dev/sda, /dev/sdb, /dev/sdc, and /dev/sdd are 0, indicating that services on the host side have been stopped.
Check whether services on the storage array side have been stopped: After logging in to controller A/B of the storage array in the debug mode, run iostat -xt 1. I/O values of osp_lun/osp_lun0 and osp_lun/osp_lun1 are 0, indicating that services on the storage array side have been stopped.
2. Mark optical, SAS, and network cables to be removed so that these cables can be inserted back to the original position after migration.
3. Power off the storage system.
For OceanStor S2600 storage systems, remove the network cable.
4. When installing the storage system, insert optical, SAS, and network cables back to their original positions.
5. Power on the storage system.

Other related questions:
Method used to migrate data on heterogeneous LUNs of the OceanStor V3 converged storage systems
You can use the LUN migration, volume mirroring, or remote replication feature to migrate data on heterogeneous LUNs of the OceanStor V3 converged storage systems.

Method used to install the device upgrade tool
For details about how to install the device upgrade tool, see OceanStor Toolkit Device Upgrade Tool Operation Guide. To download the guide, log in to the Method used to migrate data on one disk of a RAID group to other disks in the storage system
You can migrate data on one disk of a RAID group to other disks in the storage system as follows: When the disk status is Normal and you must migrate data on the disk to a hot spare disk, manually change the disk. Run the CLI command startdiskswap to migrate data on the faulty disk to a hot spare disk in the following format: startdiskswap -se faulty disk enclosure ID -ss faulty disk slot ID -te target disk enclosure ID -ts target disk slot For example, migrate data on the disk (1, 23) to the hot spare disk (1, 20) by running the following command: startdiskswap -se 1 -ss 23 -te 1 -ts 20

Method used to configure the application server to use the storage space provided by storage devices when the application server is installed with the CentOS operating system
Method used to configure the application server to use the storage space provided by storage devices when the application server is installed with the CentOS operating system: The CentOS operating system is an open-source edition of the Red Hat operating system, which is configured in the same way as the Red Hat operating system. When the CentOS application server is connected to the storage device, configure the application server by following steps of configuring the Red Hat application server in Configuration Guide.

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