Data Replication Method and Storage System_US20200293551A1_华为.pdf
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US
20200293551A1
INI
(
19
)
United
States
(
12
)
Patent
Application
Publication
(
10
)
Pub
.
No
.:
US
2020/0293551
A1
CHEN
et al
.
(
43
)
Pub
.
Date
:
Sep.
17
,
2020
Publication
Classification
(
54
)
DATA
REPLICATION
METHOD
AND
STORAGE
SYSTEM
(
71
)
Applicant
:
HUAWEI
TECHNOLOGIES
CO
.
,
LTD
. ,
Shenzhen
(
CN
)
(
72
)
Inventors
:
Yijia
CHEN
,
Chengdu
(
CN
)
;
Ji
OUYANG
,
Changsha
(
CN
)
;
Peijun
JIANG
,
Abu
Dhabi
(
AE
)
(
21
)
Appl
.
No
.:
16
/
888,254
(
51
)
Int
.
Ci
.
G06F
16/27
(
2006.01
)
GOOF
11/20
(
2006.01
)
G06F
3/06
(
2006.01
)
(
52
)
U.S.
CI
.
CPC
G06F
16/273
(
2019.01
)
;
G06F
11/2097
(
2013.01
)
;
G06F
11/2094
(
2013.01
)
;
G06F
11/2074
(
2013.01
)
;
G06F
3/065
(
2013.01
)
;
G06F
37061
(
2013.01
)
;
G06F
3/067
(
2013.01
)
(
57
)
ABSTRACT
A
data
replication
method
and
a
storage
system
are
provided
.
The
method
is
applied
to
a
storage
system
including
a
first
storage
device
and
a
second
storage
device
.
According
to
the
method
,
after
determining
replication
information
,
first
storage
system
determines
a
first
replication
sub
-
information
and
a
second
replication
sub
-
information
according
to
the
replication
information
,
where
the
replication
information
is
used
to
indicate
data
.
that
needs
to
be
replicated
by
the
first
storage
system
to
a
second
storage
system
in
a current
replication
task
.
Then
,
the
first
storage
device
replicates
data
to
the
second
storage
system
according
to
the
second
rep
lication
sub
-
information
,
and
the
second
storage
device
replicates
data
to
the
second
storage
system
according
to
the
second
replication
sub
-
information
.
(
22
)
Filed
:
May
29
,
2020
Related
U.S.
Application
Data
(
63
)
Continuation
of
application
No.
16
/
721,240
,
filed
on
Dec.
19
,
2019
,
now
Pat
.
No.
10,706,072
,
which
is
a
continuation
of
application
No.
15
/
177,877
,
filed
on
Jun
.
9
,
2016
,
now
Pat
.
No.
10,545,994
,
which
is
a
continuation
of
application
No.
PCT
/
CN2013
/
089176
,
filed
on
Dec.
12
,
2013
.
0
11
Production
site
Level
-
1
site
120
First
storage
system
33
Second
link
130
13
Second
storage
system
Level
-
2
site
Patent
Application
Publication
Sep.
17
,
2020
Sheet
1
of
11
US
2020/0293551
A1
Host
Host
Production
site
Level
- 1
site
120
First
storage
system
Second
link
130
13
Level
-
2
site
Second
storage
systein
44
of 36
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