Table 4-18
FC link parameters
Parameter
Description
Setting
Username
The user name of the
machine-machine user.
[Value]
mm_user
Password
The password of the
machine-machine user.
[Value]
mm_user@storage
Step 5
Click
Next
.
The information summary is displayed.
Step 6
Click
Finish
.
The
Execution Result
dialog box is displayed indicating that the operation succeeded.
Step 7
Click
Close
.
----End
Follow-up Procedure
In the HyperMetro, if the distance between the local and remote storage devices exceeds 25
km, you can run the following command to enable the fast write function to ensure link
transfer efficiency.
l
FC link: By default, this function is disabled. This function is only enabled for 4-port 8
Gbit/s Fibre Channel links. You can run the
change port fc fc_port_id=XXX
fast_write_enable=yes
command to enable the fast write function. To obtain the value
of
fc_port_id
, run
show port general
. The function needs to be enabled on both the
local and remote storage system. Run the
show port general
port_id=XXX
command.
When the status of
Fast Write Enable
in the output is
Yes
, this function is successfully
enabled.
l
iSCSI link: By default, this function is enabled. You are advised to enable this function.
You can run the
change remote_device link
link_type=iSCSI
link_id=XXX
fast_write_enable=no
command to disable the fast write function. To obtain the value of
link_id
, run
show remote_device link
. The function needs to be enabled only on the
local storage system. You can run the
show remote_device link
link_type=iSCSI
link_id=XXX
command to query the status of this function. When the status of
Fast
Write Enable
in the output is
Yes
, this function is successfully enabled.
For details, see the
Command Reference
of the corresponding product model.
4.6.3 Creating a Quorum Server
Through this operation, you can create a third-party quorum server for HyperMetro domains.
When the communication between storage devices in a HyperMetro pair becomes abnormal,
the quorum server decides which site continues to provide services, thereby greatly improving
service continuity.
Prerequisites
To enable quorum links to be added to storage arrays successfully, ensure the following items
before creating a quorum server.
OceanStor V3 Series
HyperMetro Feature Guide for File
4 Configuration
Issue 05 (2018-01-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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