The document discusses high availability and disaster recovery strategies on Oracle Cloud Infrastructure (OCI). It begins by covering basic high availability building blocks like availability domains, fault domains, and volume backups/cloning. It then discusses application architectures including load balancing and active-active configurations. Database architectures like RAC, Data Guard, and Autonomous Database are also covered. Finally, it discusses cross-region disaster recovery scenarios and hybrid cloud configurations. The presentation aims to outline OCI's capabilities for building highly available and disaster resilient applications and databases.

1. May, 2020
High Availability & Disaster Recovery
on Oracle Cloud Infrastructure

2. 2 © 2020 Oracle
Sinan Petrus Toma
Passionate about
Database & Cloud
Technologies

3. Safe harbor statement
The following is intended to outline our general product direction. It is intended for information
purposes only, and may not be incorporated into any contract. It is not a commitment to deliver
any material, code, or functionality, and should not be relied upon in making purchasing
decisions.
The development, release, timing, and pricing of any features or functionality described for
Oracle’s products may change and remains at the sole discretion of Oracle Corporation.
3 © 2020 Oracle

4. 4 © 2020 Oracle
Agenda
 High Availability Building Blocks
 Block Volume Backups and Cloning
 Application Architecture
 Database Architecture
 1-AD regions and Cross-region scenarios

5. 5 © 2020 Oracle
Agenda
 High Availability Building Blocks
 Block Volume Backups and Cloning
 Application Architecture
 Database Architecture
 1-AD regions and Cross-region scenarios

6. © 2020, Oracle
May 2020: 23 Regions Live, 13 Planned
Oracle Cloud Infrastructure Global Footprint
ASHBURN
PHOENIX
SYDNEY
CHICAGO
TORONTO
VINHEDO
TOKYOSEOUL
MUMBAI
OSAKA
MELBOURNE
AMSTERDAM
HYDERABAD
JEDDAH
DUBAI
LONDON
SAN JOSE, CA
SINGAPORE
SAUDI 2
UAE 2
SANTIAGO,
CHILE
ISRAEL
FRANKFURT
ZURICH
MONTREAL
CHUNCHEON
JOHANNESBURG
US GOV
EUROPE
ASIA
SAO PAULO
NEWPORT,
WALES
Commercial
Government
Commercial Planned
Government Planned
Microsoft Azure
Interconnect Planned
Microsoft Azure
Interconnect
6
AD 1
AD 2
AD 3

7. OCI Topology
7 © 2019 Oracle
Region 1
AD1
AD2 AD3
Region 3
AD1
AD2 AD3
Region 2
AD1
AD2 AD3
FD3FD2FD1
Complete HA and DR solution
• Regions serve different geographies
• Availability Domains (ADs) provide a HA in a Region
• Fault Domains (FDs) group hardware and software in an AD
• Each AD has 3 FDs

8. OCI Architecture
8 © 2019 Oracle
DATACENTERSREGION
PHYSICAL NETWORK
AD1 AD2 AD3
NVMe Load Balancers, …Bare metal VMs Exadata, RAC
COMPUTE, STORAGE,
DATABASE, LBs, …
VIRTUAL NETWORK
FD1
FD2
FD3
Customer’s
DATACENTER Internet
VPN
FastConnect

9. 9 © 2020 Oracle
Agenda
 High Availability Building Blocks
 Block Volume Backups and Cloning
 Application Architecture
 Database Architecture
 1-AD regions and Cross-region scenarios

10. Volume Clone
10 © 2019 Oracle
Boot
Volume
OCI Region
AD1
AD2
VM
VCN
= ( + . . . )
Block
Volume 1
Block
Volume N
Volume Group
Boot
Volume
( . . . + )
Block
Volume N
Block
Volume 1
Volume Group
VM
create
attach attachVolume
Group
Clone

11. Volume Backup
11 © 2019 Oracle
Boot
Volume
OCI Region
AD1
AD2
Oracle Services Network
VM
VCN
Object
Storage
= ( + . . . )
Block
Volume 1
Block
Volume N
Volume Group
Boot
Volume
( + . . . )
Block
Volume 1
Block
Volume N
Volume Group
VM
create
attach attach

12. Volume Backup | Cross-region Copy
12 © 2019 Oracle
Region 1
Region 2
AD1
AD1
VCN
VCN
Oracle Services Network
Object
Storage
Oracle Services Network
Object
Storage
Volume Backup
Cross Region Copy
Boot
Volume
VM
= ( + . . . )
Block
Volume 1
Block
Volume N
Boot
Volume
VM
( + . . . )
Block
Volume 1
Block
Volume N
Volume Restorecreate
attach attach

13. Custom Image
13 © 2019 Oracle
Custome
Image
OCI Region
AD1
AD2
Oracle Services Network
VM
VCN
Object
Storage
VM
Custom Image

14. 14 © 2019 Oracle
Region 1
Custom Image | Cross-region Copy
Region 2
AD1
AD1
VCN
VCN
Oracle Services Network
Object
Storage
Import
Oracle Services Network
Object
Storage
Custome
Image
VM
ExportCreate Custome Image
Cross Region Copy
Custome
ImageVM
Create Compute VM

15. Volume Backups vs. Clones vs. Custom Images
15 © 2019 Oracle
https://docs.cloud.oracle.com/en-us/iaas/Content/Block/Concepts/blockvolumebackups.htm#backupsvsclones

16. 16 © 2020 Oracle
Agenda
 High Availability Building Blocks
 Block Volume Backups and Cloning
 Application Architecture
 Database Architecture
 1-AD regions and Cross-region scenarios

17. Recovery Point Objective (RPO) & Recovery Time Objective (RTO)
17 © 2019 Oracle
DisasterRPO RTO
Data Loss Downtime
time

18. Application | Basic Architecture
18 © 2019 Oracle
OCI Region
public subnet
AD1
AD2
Oracle Services Network
IGW
App
VCN
Object
Storage
Use reserved public IP
App
HA no
RPO mins/hrs
RTO mins/hrs
User

19. Application | Basic Architecture + LB
19 © 2019 Oracle
OCI Region
public subnet
AD1
AD2
private subnet
Oracle Services Network
IGW
App
VCN
Object
Storage
LB active
LB passive
same public IP
App
HA no
RPO mins/hrs
RTO mins/hrs
Listener
User

20. Application HA (Standby mode)
20 © 2019 Oracle
OCI Region
public subnet
AD1
AD2
private subnet
Oracle Services Network
IGW
App
VCN
Object
Storage
LB active
LB passive App
rsync
App
HA yes
RPO zero
RTO secs
Listener
User

21. Application HA (Active mode)
21 © 2019 Oracle
OCI Region
public subnet
AD1
AD2
private subnet
Oracle Services Network
IGW
App
VCN
Object
Storage
LB active
LB passive App
App
HA yes
RPO zero
RTO zero
Listener
User
JumpServer
NAT

22. 22 © 2020 Oracle
Agenda
 High Availability Building Blocks
 Block Volume Backups and Cloning
 Application Architecture
 Database Architecture
 1-AD regions and Cross-region scenarios

23. 23 © 2019 Oracle
OCI Region
public subnet
AD1
AD2
private subnet private subnet
Oracle Services Network
IGW SGW
App
VCN
Object
Storage
LB active
LB passive App
App DB
HA yes no
RPO zero mins
RTO zero mins/hrs
Database | Basic Architecture
DB
Listener
User

24. 24 © 2019 Oracle
OCI Region
public subnet
AD1
AD2
private subnet private subnet
Oracle Services Network
IGW SGW
App
VCN
Object
Storage
LB active
LB passive App
App DB (server) DB (AD)
HA yes yes no
RPO zero zero mins
RTO zero zero mins/hrsDatabase | RAC
node1
node2
DB
FD1
FD2
Listener
User

25. 25 © 2019 Oracle
OCI Region
public subnet
AD1
AD2
private subnet private subnet
Oracle Services Network
IGW SGW
App
VCN
Object
Storage
LB active
LB passive App
App DB
HA yes yes
RPO zero zero
RTO zero secs
Database | Data Guard
DB (primary)
DB (standby)
Listener
User
Data Guard

26. node1
node2
26 © 2019 Oracle
OCI Region
public subnet
AD1
AD2
private subnet private subnet
Oracle Services Network
IGW SGW
App
VCN
Object
Storage
LB active
LB passive App
Database | RAC & Data Guard
DB
(primary)
DB
(standby)
node1
node2
FD1
FD2
FD1
FD2
Listener
User
Data Guard
App DB (server) DB (AD)
HA yes yes yes
RPO zero zero zero
RTO zero zero secs

27. 27 © 2019 Oracle
OCI Region
public subnet
AD1
AD2
private subnet private subnet
Oracle Services Network
IGW SGW
App
VCN
Object
Storage
LB active
LB passive App
App DB
HA yes yes
RPO zero 1 min
RTO zero secs
Primary PDB
Refreshable PDB
Standard Edition | Refreshable PDB Switchover
Listener
User

28. 28 © 2019 Oracle
OCI Region
public subnet
AD1
AD2
private subnet
Oracle Services Network
IGW SGW
App
VCN
Object
Storage
LB active
LB passive App
App DB
HA yes
99.95%
SLA
RPO zero
RTO zero
Autonomous Database | Shared Infrastructure
ADB
Auto backup
Listener
User

29. 29 © 2019 Oracle
OCI Region
public subnet
AD1
AD2
private subnet private subnet
Oracle Services Network
IGW SGW
App
VCN
Object
Storage
LB active
LB passive App
App DB
HA yes
99.95%
SLA
RPO zero
RTO zero
Autonomous Database | Dedicated Infrastructure
ADB
Auto backup
Listener
User

30. 30 © 2020 Oracle
Agenda
 High Availability Building Blocks
 Block Volume Backups and Cloning
 Application Architecture
 Database Architecture
 1-AD regions and Cross-region scenarios

31. 31 © 2019 Oracle
OCI Region
public subnet
FD1
FD2
private subnet private subnet
Oracle Services Network
IGW SGW
App
VCN
Object
Storage
LB active
LB passive App
App DB
HA yes yes
RPO zero zero
RTO zero secs
1-AD region
DB (primary)
DB (standby)
Listener
User
Data Guard

32. 32 © 2019 Oracle
Region 1
App DB
HA yes yes
RPO zero zero/secs
RTO secs secs
Cross-region Disaster Recovery
Region 2DNS
AD1
AD1
VCN
VCN
public subnet
public subnet
App
App
private subnet
private subnet
DB (primary)
DB (standby)
Data Guard
Oracle Services Network
Object
Storage
DB backup
Oracle Services Network
Object
Storage
DB backup
User
VCN Remote Peering

33. 33 © 2019 Oracle
Region 1
App DB
HA yes yes
RPO zero zero/secs
RTO secs secs
Hybrid Cloud | Data Guard
on-prem
AD1
VCN
App
private subnet
DB (standby)
DB (primary)
Data Guard
Oracle Services Network
Object
Storage
DB backup
User
VPN/FastConnect

34. 34 © 2019 Oracle
Region 1
Hybrid Cloud | Backup
on prem
App DB
Oracle Services Network
Object
Storage
User
DB backup
DB
HA no
RPO mins
RTO mins/hrs

35. Further Reading
35 © 2019 Oracle
Best Practices for Deploying High Availability Architecture on OCI
https://docs.cloud.oracle.com/en-us/iaas/Content/Resources/Assets/whitepapers/best-practices-deploying-ha-architecture-oci.pdf
Building Highly Available Applications in a Region with One Availability Domain
https://docs.cloud.oracle.com/en-us/iaas/Content/Resources/Assets/whitepapers/building-ha-apps-in-one-availability-domain.pdf
Oracle MAA Blueprints for OCI Deployments
https://www.oracle.com/technetwork/database/availability/oci-maa-reference-architectures-5228897.pdf
Learn About High Availability in Oracle Cloud
https://docs.oracle.com/en/solutions/design-ha
Learn About Disaster Recovery in Oracle Cloud
https://docs.oracle.com/en/solutions/design-dr/learn-dr-building-blocks-oracle-cloud1.html
Refreshable PDB Switchover in Standard Edition Cloud Service
https://www.linkedin.com/pulse/refreshable-pdb-switchover-standard-edition-cloud-sinan-petrus-toma/

36. Thank you
Sinan Petrus Toma
Senior Solution Engineer
Oracle Database & Cloud Architect
36