OCI Regions & OCI Availability Domain

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New Update Oracle on Tuesday [13th September 2022] opens a new Cloud Region in Madrid, Spain. This is a part of Oracle’s global plans to operate 44 second-generation cloud regions by the end of 2022.

Now there are a total of 40 regions.

OCI Regions: New OCI Region Added: Madrid, (Spain)

[Updated on September 13th, 2022]

Oracle has announced the availability of a new OCI Region in which you have 1 Availability Domain (AD)


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What is Oracle Cloud Regions

  1. Oracle Cloud Infrastructure (OCI) Servers & Data is hosted in a Oracle Cloud Region.
  2. There is a total of 40 Region now (i.e. London, Sao Paulo, Frankfurt, Ashburn, Phoenix, Canada, Tokyo, Seoul, Mumbai, Dubai, Zurich, Sydney, Osaka, Melbourne, Jeddah, Amsterdam, Montreal, Hyderabad, Chuncheon, San Jose, Newport, Santiago, Vinhedo, Jerusalem, Marseille & Singapore, Paris, Marseille, Milan, Queretaro, Madrid, Stockholm, Abu Dhabi, Singapore, Toronto etc.).
  3. Every Region can have up to 3 Availability Domains. The first 4 regions (London, Ashburn, Pheonix, and Frankfurt) have 3 ADs while all the new regions have 1 AD each.
  4. OCI services are Global (IAM), Regional (VCN, Object Storage), and some are AD Specific (Compute, DB System, Boot/Block Volumes).
  5. When you create a Cloud Account a Home Region is by default allocated to you, wherein you can subscribe to another region as well.

Check out: OCI Architect Associate to know everything about Oracle Cloud Infrastructure 2021 Architect Associate.

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How to Subscribe to New Region

1. Log in to the Cloud Console, & from the taskbar drop down, click on Manage Region, from there you can subscribe to any Region you want.

Note: As of March 2020 if you are using a trial account then you can only subscribe to Home Region.

 

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2. Another method is Log into the Console, & from the Navigation menu, under Governance & Administration, click Region Management, there you can Subscribe to other Regions

Also Check:  Oracle VPN Connect.

OCI Availability Domain (AD) 

  • Availability Domain (AD) is one or more data centers located within a region. A region is composed of three availability domains.
  • The Availability Domains are interconnected via a low-latency within a region.

Region, AD & FD

OCI Fault Domain (FD)

  • Fault Domain is a group of hardware components that all share a common point of failure. To be fault tolerant to a specific level, multiple fault domains are required at that level.
  • FDs are physical data centers with availability domains, which provides a higher level of protection from unexpected hardware failures or computer hardware maintenance.
  • Each AD (availability domain) have 3 fault domains (FDs).

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How A Region, FD & AD Provides High Availability?

  • The region is divided into datacentres which are OCI Availability Domains. ADs are further divided into Fault Domain & FD provides protection against failure within AD. This Process is an example of High Availability within a Datacentre.
  • If you are designing your databases, or VM, or Load Balancer then you will be configuring them within AD but across Fault Domains for High Availability within a Datacenter.
  • If you want HA across the regions with a single AD and If a region supports multiple ADs then you are going to deploy them across multiple ADs or you can configure them across Region to avoid any region failures.
  • In case of a region failure of a single AD region, we will be deploying services across the region to avoid any region failure. This process is an example of Region pair maintaining HA

Oracle Cloud Region

Blog:  Oracle Cloud Infrastructure.

How to Check the OCI Availability Domain

OCI Availability Domain is one or more data centers located within a Region. Every Region can have up to 3 Availability Domains. The first 4 regions (London, Ashburn, Pheonix, and Frankfurt) have 3 ADs while all the new regions have 1 AD each.

Once you subscribe to the new region, you can go under Compute & try to create an Instance.

Here, you can see, in this new region you will have only 1 AD

New Region AD

To know more about Oracle Network Load Balancer.

OCI Realms

A OCI realm is a logical collection of regions. Realms are isolated from each other and do not share any data. Tenancy exists in a single realm and can access regions that belong to the realm. Currently, there are 3 realms in OCI:

  • Commercial Realm
  • Govt Cloud: FedRAMP (Federal Risk & Authorization Management Program)
  • Govt Cloud: IL5 Authorized (Impact Level 5)

Note: Not all services are currently supported in Govt Cloud.

Commercial vs Government Region

There are two types of Regions:

  • Commercial
  • Government

a) Government Cloud: Is dedicated to Government Organizations only (Federal compliant). Only government companies can access them with proper approvals, and this will be assigned by Oracle.
b) Commercial Cloud: It is not limited to one Organization but it is publicly available.

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List of Regions Added

Date Region Country
 January 19th, 2022  Update 21:A new Oracle Cloud Region added in Johannesburg  South Africa
 October 31st, 2021  Update 20:A new Oracle Cloud Region added in Singapore  Singapore
 October 31st, 2021  Update 19:A new Oracle Cloud Region added in Marseille  France
 October 13th, 2021  Update 18: A new Oracle Cloud Region added in Jerusalem  Israel Central
 May 22nd, 2021  Update 17: A new Oracle Cloud Region added in Vinhedo  Brazil
 November 3oth, 2020  Update 16: A new Oracle Cloud Region added in Santiago  Chile
 October 31st, 2020  Update 15: A new Oracle Cloud Region added in Newport  UK
 September 30th, 2020  Update 14: A new Oracle Cloud Region added in Dubai  UAE
 July 24th, 2020  Update 13: A new Oracle Cloud Region added in San Jose  CA
 May 29th, 2020  Update 12: A new Oracle Cloud Region added in Chuncheon  South Korea
 April 30th, 2020  Update 11: A new Oracle Cloud Region added in Hyderabad  India
 March 1st, 2020  Update 10: A new Oracle Cloud Region added in Montreal  Canada
 Feb 1st, 2020  Update 9: 3 new Oracle Cloud Regions added in Melbourne(Australia Southeast)  Jeddah(Saudi Arabia West)
 Jan 24th, 2020  Update 8: A new Oracle Cloud Region added in Osaka  Japan
 Aug 30th, 2019  Update 7: A new Oracle Cloud Region added in Sydney  Australia
 Aug 23rd, 2019  Update 6: A new Oracle Cloud Region added in Sao Paulo  Brazil
 Aug 2nd, 2019  Update 5: A new Oracle Cloud Region added in Zurich  Switzerland
 July 26th, 2019  Update 4: A new Oracle Cloud Region added in Mumbai  India
 May 13th, 2019  Update 3: A new Oracle Cloud Region added in Seoul  South Korea
 Apr 30th, 2019  Update 2: Oracle added new OCI Region in Tokyo  Japan
 Jan 17th, 2019  Update 1: Oracle added new OIC Region in Toronto  Canada

Note: For the full list of Oracle Cloud Regions including PaaS & IaaS.

FAQ:

Q1: Which is an important consideration when choosing an oracle cloud infrastructure region?

Ans: Choose the region that is in close proximity to end users for the best performance

Q2: How will you configure high availability for an application in an oracle cloud infrastructure region with a single availability domain?

Ans: Setup your application across multiple Fault Domains and the database tier contains Oracle Cloud Infrastructure Database instances. For high availability, use 2-node virtual machine (VM) DB systems or Exadata DB systems.

Q3:What capability protects against failures within an oci availability domain?

Ans: Fault Domains, it provides protection against unexpected failures within AD.  Fault domains are physical datacenters with availability domains, FDs are used to reduce hardware failures.

Related/Further Readings

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mike

I started my IT career in 2000 as an Oracle DBA/Apps DBA. The first few years were tough (<$100/month), with very little growth. In 2004, I moved to the UK. After working really hard, I landed a job that paid me £2700 per month. In February 2005, I saw a job that was £450 per day, which was nearly 4 times of my then salary.