Bài giảng Kiến trúc cài đặt cơ sở dữ liệu - Chương 4: Mirroring và log shipping

GV Phi Loan – FIT - UIH


N i dung
•K

̀

̀ ̀mirroring

–C ̀
̀ ̀ nh
– C ̀ nh mirroring
–G
̀ ̀
̀
̀ a mirroring

• Log shipping
•K ̀
̀
̀

GV Phi Loan – FIT - UIH

̀

̀ ̀mirroring


High Availability Solutions

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t.

GV Phi Loan – FIT - UIH

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C ̀
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p High Availability

O ̀F
̀C
̀SQL Server 2012)
• Database mirroring
• Log shipping

GV Phi Loan – FIT - UIH

̀I

̀

̀

C

̀

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p

• M ̀DB̀ ̀ ̀
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̀ ̀ ̀
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̀
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̀ ̀log
shipping.
• Đ ̀
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u destination servers

–N

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̀

̀ ̀
t.

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–N ̀ ̀
̀
̀ ̀
̀ ̀
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̀
i database mirroring.

GV Phi Loan – FIT - UIH

̀DB ̀

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Database mirroring
• D

̀ ̀ ̀
̀ ̀
̀
̀
̀
̀
̀ ̀C̀DL ̀ ̀
̀
C̀DL̀

̀
̀ ̀C̀DL̀
̀
̀
̀
̀C̀DL̀
̀
̀ ̀ ng.
• D
̀
̀
̀ ̀ ̀C̀DL̀ ̀ ̀
̀
̀
̀
̀ ̀ ̀C̀DL̀
̀
̀
̀
̀
̀
̀ ̀
̀
̀ ̀
̀ ̀
̀
̀
̀
̀ ̀
C̀DL̀

̀
̀C̀DL̀
̀
̀ ng.
GV Phi Loan – FIT - UIH

̀

6


L ̀

̀ a mirroring

• T

̀ ̀
̀
̀ ̀C̀DL̀
̀
̀ ̀ ̀
̀ a CSDL.
• C ̀
̀
̀C̀DL̀
̀ ̀
̀ ̀
̀
̀̀QL̀̀

̀ ̀
̀
̀
̀̀QL̀
̀
̀
̀C ̀
̀
̀
̀C̀DL̀
̀
̀ ̀
̀ nh
• C ̀
̀
̀ ̀
̀ ̀C̀DL̀
̀ ̀HD̀
̀̀Ẁ
̀ p.

GV Phi Loan – FIT - UIH

7


L ̀

̀ a mirroring

•C ̀

̀
̀
̀

GV Phi Loan – FIT - UIH

̀
̀ ̀ ̀
̀
̀

̀ ̀
̀ ̀
-

̀
̀

̀

̀HD̀
̀ ̀ ̀ ̀
̀ c.

8


N

̀

̀ a mirroring

• C ̀C̀DL̀ ̀ ̀
̀ ̀
• C ̀C̀DL̀ ̀
̀
̀
̀
mirror
• M
̀
̀ ̀ ̀ ̀
̀
c CSDL.
• M
̀ ̀ ̀
̀ ̀ ̀
̀
̀ ̀ ̀ ̀
̀C ̀ ̀
̀C̀DL̀
̀̀̀Ì̀
̀ ̀
̀
mirror.
• M
̀

̀ ̀ ̀
̀ ̀
C̀DL̀
̀M ̀C̀DL̀
̀
GV Phi Loan – FIT - UIH

̀

̀ ̀

̀
̀
̀
̀
̀

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mirror.
̀
̀
̀

̀

̀

̀ ̀
̀ ̀

̀
̀
̀ ̀
̀
̀ ̀C̀DL̀
̀
̀
̀
̀ ng tay trên CSDL

̀
̀
̀ ̀
̀ ̀1 CSDL mirror.

̀ ̀
9


N

̀

̀ a mirroring

• C̀DL̀
̀
̀
̀
• K ̀C̀DL̀

̀ ̀ ̀
̀
̀
̀C̀DL̀
c.

GV Phi Loan – FIT - UIH

̀
̀

̀C̀DL̀ nh.
̀
̀
̀ ̀
̀
̀ ̀ ̀

̀ ̀
̀

10


Đ

̀

•C ̀

a mirror
̀

̀

n 3 SQL Servers:

– Principal server
– Mirror server
–W
̀
̀̀

GV Phi Loan – FIT - UIH

̀

n)

11


GV Phi Loan – FIT - UIH

12


Quorum
•Q

̀ ̀
̀
̀
̀
̀
̀ i nhau.

GV Phi Loan – FIT - UIH

̀

̀
̀ ̀

̀ ̀

̀
̀

̀
̀

̀

13


GV Phi Loan – FIT - UIH

14

Scenario 1

GV Phi Loan – FIT - UIH

15


Scenario 2

GV Phi Loan – FIT - UIH

16


Safety level
•C ̀

̀
•C ̀ ̀

̀

̀

̀

̀

̀

̀

̀

̀

̀
̀

̀T
̀
̀

̀

̀
̀

̀

̀
̀

̀

̀

̀

̀

̀
̀

̀

̀

̀

̀
̀

̀

̀

n

n:

– SAFETY FULL (synchronous)
– SAFETY OFF (asynchronous)

GV Phi Loan – FIT - UIH

17

GV Phi Loan – FIT - UIH

18


High-safety mode with automatic
failover.
•N
–N

̀

̀̀́FETỲFULL̀ ̀ ̀ ̀
̀
̀ ̀
̀
̀ ̀ ̀
c thi automatic failover.

̀
̀

̀C̀DL̀
̀ ̀ ̀ ̀
̀ ̀ ̀ ̀
̀ ̀
̀
̀
̀

̀
̀
̀ ̀
̀
̀ client.

̀ ̀

GV Phi Loan – FIT - UIH

̀

̀ ̀ ̀
̀ ̀C̀DL̀̀

19


T
1.

2.

̀
C
̀

̀

̀

̀

̀ ̀

̀
̀ ̀

B ̀

̀
̀
̀̀
̀
̀ ̀

GV Phi Loan – FIT - UIH

̀ a SAFETY FULL
̀

̀C̀DL̀
̀
̀
̀
̀ ̀ ̀
̀ ̀
̀ a transaction log
̀
̀ ̀

̀ ̀ ̀
̀
̀ ̀
̀ ̀ ̀
̀ ̀ ̀ ̀
̀ ̀
̀
̀
̀ ̀ ̀ ̀
̀ ̀
̀ ̀
̀̀
̀
̀
̀ ̀
̀
̀
20


T

̀

̀

3. M

̀

̀
̀

̀
̀

̀
4. M

5. M ̀
client.

GV Phi Loan – FIT - UIH

̀

̀ a SAFETY FULL

̀
̀

̀
̀

̀

̀

̀
̀

̀ a.
̀
̀
̀ ̀
̀ ̀
̀ t.
̀
̀
̀ ̀

̀

̀

̀T ̀

̀

̀

̀

̀

̀

̀ ̀

̀

n

21


GV Phi Loan – FIT - UIH


High-safety mode without automatic
failover
•N

̀

̀̀́FETỲFULL̀ ̀
̀
̀̀ ̀
̀
automatic failover
– K ̀C̀DL̀
̀ ̀
̀ o 1 quorum.
–N
̀
̀
̀
tay.

GV Phi Loan – FIT - UIH

̀

̀
̀

̀

̀ ̀
̀
̀

n

̀

̀
̀

ng

23


High-performance mode
• ̀́FETỲOFF̀ ̀
̀ ̀ ̀asynchronous
database mirroring hay high-performance
mode.
• ̀ ̀

̀ ̀
̀C̀DL̀
̀ ̀
̀ ̀
̀ .

GV Phi Loan – FIT - UIH

̀


GV Phi Loan – FIT - UIH