Huawei OceanStor 2000 V3 Series Features Manual page 21

OceanStor V3 Series
HyperMetro Feature Guide for Block
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Issue 05 (2018-01-30)
Fault Example
Quorum server
HyperMetro Pair
LUN
Data center A Data center B
Quorum server
HyperMetro Pair
LUN
Data center A Data center B
Quorum server
HyperMetro Pair
LUN
Data center A Data center B
Quorum server
HyperMetro Pair
LUN
Data center A Data center B
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Fault Type
The link
between the
two storage
arrays and the
LUN
link between
one storage
array and the
quorum server
both break
down.
One storage
array
malfunctions
and the link
LUN
between the
other storage
array and the
quorum server
is down.
The quorum
server
malfunctions
and then the
LUN
link between
two storage
arrays is
down.
The quorum
server
malfunctions
and the link
LUN
between the
quorum server
and one
storage array
is down.
1 Feature Description
HyperM Arbitration Result
etro Pair
Running
Status
To be B continues
synchroni providing services
zed while A stops.
To be Both A and B stop.
synchroni
NOTE
zed
You must forcibly
start B to resume
providing services for
hosts.
To be Result 1: If the link
synchroni is interrupted more
zed than 60 seconds after
the quorum server
fails, A continues
providing services
while B stops.
Result 2: If the link
is interrupted within
60 seconds of the
quorum server
failure, both A and B
stop. You must
forcibly start either
A or B to resume
providing services
for hosts.
Normal Both A and B
continue providing
services.
NOTE
HyperMetro
automatically
switches to static
priority arbitration.
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