Method used to configure remote replication for OceanStor T Series

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For details about the remote replication feature guide of OceanStor T Series, go to the Remote Replication Feature Guide website.

Other related questions:
How to use a secondary LUN in a remote replication?
In a remote replication, the secondary LUN and the primary LUN form a pair, and the secondary LUN backs up data on the primary LUN. ? By default, the secondary LUN cannot be accessed (read or written) by a host. If a request is made to access data on the secondary LUN, you can create a virtual snapshot for the secondary LUN, and then map the virtual snapshot to the host for access. ? When a primary LUN encounters a critical error and the services are interrupted, you must perform the master/slave switchover to switch the secondary LUN to the primary LUN, and then map the new primary LUN to the host for access. NOTE: For details on how to perform a master/slave switchover, choose Help > Help Topics on the ISM, and view the related help information.

Method used to extend LUN capacity of OceanStor T Series
You can extend LUN capacity of OceanStor T Series as follows: 1. When the capacity of a LUN cannot meet service requirements, you can extend the LUN capacity by adding capacity from other LUNs. 2. After a LUN is extended, its capacity is the total capacity of the primary LUN and all secondary LUNs. LUN extending operation can be performed online without stopping services on the extending primary LUN. After a LUNs is deleted, the capacity of a newly created LUN is smaller than the total capacity of original LUNs because space is not continuous. You are advised to configure LUN extending for LUN expansion. 3. Go to the Creating LUN Extending Wizard dialog box. In the navigation tree, select Assistant. In the function pane, choose Basic Settings > Extend LUN. The Creating LUN Extending Wizard dialog box is displayed. Select the primary LUN of the extended LUN. In the Assistant dialog box, click Next. The Creating LUN Extending Wizard Step 3-1: Select Extending Primary LUN dialog box is displayed. Select an ordinary LUN as the primary LUN of the extended LUN. Select the secondary LUN of the extended LUN. In the Creating LUN Extending Wizard Step 3-1: Select Extending Primary LUN dialog box, click Next. The Creating LUN Extending Wizard Step 3-2: Select Extending Secondary LUN dialog box is displayed. Select one LUN or multiple LUNs as the secondary LUN of the extended LUN. Click Next. The Creating LUN Extending Wizard Step 3-3: Summary dialog box is displayed, displaying the primary and secondary LUNs after expansion. Click Finish to complete LUN expansion. The Information dialog box is displayed. Click OK. 4. For details about operating systems after LUN capacity expansion, go to .

Method used to configure coffer disks of OceanStor T Series unified storage
You do not need to configure coffer disks of OceanStor T Series unified storage.

Method used to obtain documentation of OceanStor T Series products
To obtain documentation of OceanStor T Series products, including product descriptions, installation guides, configuration guides, and maintenance guides, you can visit Huawei Technical Support.

Method used to expand LUN capacity of OceanStor T Series
You can expand LUN capacity of OceanStor T Series as follows: Go to the Expand dialog box. In the ISM navigation tree, choose All Devices > SN_XX > Storage Resources > Block Storage Pools. (SN_XX indicates the target storage storage.) In the right function pane, select the RAID group you want to expand. Click Expand. The Expand dialog box is displayed. Expand a RAID group. In the Available Disks area, select the idle disks that you want to add to the RAID group. Note: To improve disk utilization, you are advised to select an idle disk of which the capacity is the same as that of a member disk in the RAID group. Click the idle disk and add the disk to the Selected Disks group box. Confirm the RAID group expansion. Click OK. The Warning dialog box is displayed. Read and confirm the information in the dialog box. Then select I have read the warning message carefully. Click OK. The Information dialog box is displayed, indicating that the operation is successful. Click OK to return to the Block Storage Pools page and complete RAID group expansion. Result After the RAID group is expanded, you can perform the following operations to check the total capacity of the RAID group after capacity expansion. On the Block Storage Pools page, select the RAID group after capacity expansion. Click the Details tab to view the total capacity of the RAID group after capacity expansion.

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