Huawei OceanStor 2000 V3 Series Features Manual page 24

OceanStor V3 Series
HyperMetro Feature Guide for Block
N
o.
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Issue 05 (2018-01-30)
Fault Example
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
The link
between the
active quorum
server and
non-preferred
LUN
site breaks
down and then
the storage
array at the
preferred site
fails after
more than 60
seconds.
The active
quorum server
malfunctions
and then the
link between
LUN
two storage
arrays is
down.
1 Feature Description
HyperM Arbitration Result
etro Pair
Running
Status
To be The standby quorum
synchroni server takes over the
zed arbitration services
from the active
quorum server.
B continues
providing services
while A stops.
To be The standby quorum
synchroni server takes over the
zed arbitration services
from the active
quorum server.
Result 1: If the link
is interrupted more
than 60 seconds
after the active
quorum server fails,
A continues
providing services
while B stops.
If the link is
interrupted within 60
seconds of the
quorum server
failure, both A and
B may win the
arbitration and
continue providing
services.
NOTE
A has arbitration
priority, so generally
A continues
providing services
while B stops.
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