Deploying SOA across Active-Active Data Centres by Simon Haslam
April 10, 2016 Leave a comment
|
HistoryOver recent years within Europe some customers have accepted a close geographic distance (e.g. 15 km) between data centres in return for a high bandwidth, low latency interconnect (typically ‘dark’ or dedicated fibre). This is to enable them to share normal production workload across both sites – so called "active/active" data centres – which is contrary to the traditional approach of having a highly segregated Disaster Recovery (DR) site (an "active/standby" topology). |
Prior to the mid-2013 Oracle supported a single approach to High Availability (HA), which was clustering within a single site, as described by Fusion Middleware High Availability Guide, and not stretched across two sites. The Oracle supported approach to Disaster Recovery was entire site fail-over using an active-standby model, as shown below (from Fusion Middleware Disaster Recovery Guide):
A few large customers had negotiated agreements with Oracle to support architectures that were simultaneously active in 2 data centres, but these were people spending considerable sums on licences and ACS support.
Network Trend
Over the last 5 years the cost of site-to-site fibre has fallen considerably with “metropolitan” scale data centre links becoming common. Whilst the term Metropolitan Area Network (MAN) originally meant a connection across a city, these days it tends to also apply to low latency connections between neighbouring conurbations, typically running Ethernet over DWDM. The scale of a MAN falls in between the Local Area Network (LAN) within a single data centre and the traditional Wide Area Network (WAN) which can span hundreds of miles. Read the complete article here.
For regular information on Oracle SOA Suite become a member in the SOA & BPM Partner Community for registration please visit www.oracle.com/goto/emea/soa (OPN account required) If you need support with your account please contact the Oracle Partner Business Center.
Blog 
Twitter 
LinkedIn ![image[7][2][2][2]](https://soacommunity.files.wordpress.com/2013/04/image7222.png?w=20&h=20 "image[7][2][2][2]"){kind=small}
Facebook ![clip_image002[8][4][2][2][2]](https://soacommunity.files.wordpress.com/2013/04/clip_image00284222.jpg?w=26&h=23 "clip_image002[8][4][2][2][2]"){kind=small}
Wiki
Technorati Tags: SOA Community,Oracle SOA,Oracle BPM,OPN,Jürgen Kress
About Jürgen Kress
PaaS Community Blog 