Expanding The Capacity Of A Hypermetro Lun - Huawei OceanStor 2000 V3 Series Features Manual

OceanStor V3 Series
HyperMetro Feature Guide for Block
Procedure
Step 1 Log in to DeviceManager.
Step 2 Choose
Step 3 Select a HyperMetro that you want to delete and click Delete.
The security alert dialog box is displayed.
Step 4 Optional: Select Only delete the configuration information about the local device if the
HyperMetro pair fails or the remote device is disconnected. based on site requirements.
If you do not select this option, you cannot delete the HyperMetro domain when the local device is
disconnected from the remote device.
Step 5 Optional: Select Stop the LUN service of this device based on site requirements.
This operation must be performed on the local site or remote site (you are advised to set "Local Resource
Host Access Status" as an "Access denied" storage device). After this operation, the WWN of the LUN on the
storage device will change. Rescan the LUN on the host. If the LUN service is not stopped on both
HyperMetro sites, there is risk of data inconsistency.
Step 6 Select I have read and understand the consequences associated with performing this
operation. and click OK.
Step 7 The Execution Result dialog box is displayed indicating that the operation succeeded.
After deleting a HyperMetro pair, scan for storage resources on the host to ensure that the host can correctly
identify the storage resources mapped to it.
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5.1.8 Expanding the Capacity of a HyperMetro LUN

If LUN space is insufficient to store service data, you can expand the LUN capacity to meet
your service requirements.
Context
Before expanding the capacities of HyperMetro LUNs, you must delete the HyperMetro pair
where the LUNs reside. The following describes how to expand the capacities of HyperMetro
LUNs.
In the following, the primary LUN is the HyperMetro LUN that provides services and the secondary LUN is
the HyperMetro LUN that stops providing services.
Procedure
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Issue 05 (2018-01-30)
Data Protection >
NOTE
NOTE
NOTE
NOTE
Offline expansion (In scenarios where the CPU usage and disk usage exceed 50%, the
HyperMetro replication bandwidth is insufficient, or the distance between data centers
exceeds 25 km).
a. Stop upper-layer services.
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HyperMetro > HyperMetro Pair.
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