Huawei OceanStor 2000 V3 Series Features Manual page 20

OceanStor V3 Series
HyperMetro Feature Guide for Block
N
o.
2
3
4
5
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
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Fault Type
The link
between one
storage array
and the
LUN
quorum server
breaks down.
One storage
array
malfunctions.
LUN
The link
between two
storage arrays
breaks down.
LUN
One storage
array and the
quorum server
both
LUN
malfunction.
1 Feature Description
HyperM Arbitration Result
etro Pair
Running
Status
Normal Both A and B
continue providing
services.
To be B continues
synchroni providing services
zed while A stops.
To be Result 1: A
synchroni continues providing
zed services while B
stops.
Result 2: B
continues providing
services while A
stops.
NOTE
l A has arbitration
priority, so the
normal result is
Result 1.
l (For
V300R006C10
and later
versions) If the
link between data
center A and the
application server
has become faulty
before the link
between the two
storage arrays
breaks down, data
center B will win
the arbitration.
To be Both A and B stop.
synchroni
NOTE
zed
You must forcibly
start B to resume
providing services for
hosts.
12