Hi, community.
Here's a case that a heterogeneous remote device appears in the remote device list after Hypermetro configuration which can not be deleted easily.
Description
Two storages with the same model and version (OceanStor 5800 V5 + V500R007C10) is in active-active mode.
After configuring HyperMetro, a heterogeneous remote device appears in the remote device list and cannot be removed.
There are four Fibre Channel links between the two storage devices and a 16 KB LUN exists on the heterogeneous device.
After the link is disconnected, the heterogeneous device disappears.
After the link is restored, the heterogeneous device appears again.
Analysis & Solution
1. Check storage logs.
It is found that in-band is enabled for a default mapping view and the command device is enabled on the customer side. After the command device is enabled, a 16 KB LUN exists.
2. Log in to DeviceManager and disable the automatic scanning function.
(Host > Parameter Setting)
3. On the remote device page, scan the remote device again.
It is found that the 16 KB LUN of the remote device disappears, but the heterogeneous device still cannot be deleted.
4. On DeviceManager, check the remote link port of the heterogeneous device.
5. Log in to the CLI and switch to the developer mode (disable every port).
a. change user_mode current_mode user_mode=developer
b. change port enabled enabled=no port_id=CTE0.A2.P0 port_type=FC
6. After each port is disabled, the heterogeneous device disappears.
After the port is enabled, the heterogeneous device does not appear.
a. change port enabled enabled=yes port_id=CTE0.A2.P0 port_type=FC
Hope this post will help you solve similar cases.
If you have any problems, please post them in our community, happy to solve them for you.
