Huawei OceanStor 18000 V3 Series, Руководство по функциям

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NOTE
The quorum server mode is recommended. After a quorum server is deployed, the non-preferred site of
HyperMetro will automatically take over services once the preferred site becomes faulty, without causing
HyperMetro service interruption.
Static Priority Mode
The static priority mode applies to scenarios where no third-place quorum server is deployed.
In a HyperMetro vStore pair, you can set one data center as the preferred site and the other as
the non-preferred site. In the following example, data center A is used as a preferred site.
Table 1-3 describes the arbitration mechanism in static priority mode.
NOTE
You can set the Recovery Policy for HyperMetro pair failures by Modifying HyperMetro Pair Properties .
l Automatic : The system automatically synchronizes data for data recovery.
l Manual : You must manually synchronize data for data recovery.
Table 1-3 Arbitration mechanism in static priority mode
N
o. Fault
Diagram Fault Type HyperMetr
o Pair
Running
Status Arbitration
Result
1 The link
between
two storage
arrays
breaks
down.
Data center A Data center B
To be
synchronize
d A continues
providing
services
while B
stops.
2 The storage
array in
data center
B (non-
preferred
site)
malfunction
s.
Data center A Data center B
To be
synchronize
d A continues
providing
services
while B
stops.
3 The storage
array in
data center
A
(preferred
site)
malfunction
s.
Data center A Data center B
To be
synchronize
d Both A and
B stop. You
must
forcibly start
B to resume
providing
services for
hosts.
Green cable: HyperMetro replication network
OceanStor V3 Series
HyperMetro Feature Guide for File
1 Feature Description
Issue 05 (2018-01-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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