Huawei OceanStor 2000 V3 Series Features Manual page 22

OceanStor V3 Series
HyperMetro Feature Guide for Block
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Black cable: HyperMetro replication network
Green cable: quorum network
Table 1-5 Arbitration mechanism in dual-quorum-server mode
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Issue 05 (2018-01-30)
Fault Example
Fault Example
Quorum server Quorum server
(active) (standby)
HyperMetro
Pair
LUN
Data center A Data center B
Quorum server Quorum server
(active) (standby)
HyperMetro
Pair
LUN
Data center A Data cente B
Quorum server Quorum server
(active) (standby)
HyperMetro
Pair
LUN
Data center A Data cente B
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Fault Type
Fault Type
The active
quorum server
breaks down.
LUN
The link
between one
storage array
and the active
quorum server
LUN
breaks down.
One storage
array
malfunctions.
LUN
1 Feature Description
HyperM Arbitration Result
etro Pair
Running
Status
HyperM Arbitration Result
etro Pair
Running
Status
Normal The standby quorum
server takes over the
arbitration services
from the active
quorum server.
Both A and B
continue providing
services.
Normal The active quorum
server runs properly.
Both A and B
continue providing
services.
To be The active quorum
synchroni server runs properly.
zed
B continues
providing services
while A stops.
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