Private Cloud as part of your overall cloud strategy
In these blogs we are considering why organisations should still potentially invest in their own private cloud as part of their hybrid cloud strategy.
In Part I we talked about why organisations need an up to date cloud architecture and the basics of cloud. In this blog we will talk about interoperability and security and our advice to organisations looking to update their cloud architecture.
Optimising Interoperability and Security
Interoperability between data centres and different types of cloud can completely change the economics of choosing where to host workloads.
This is because adding one or more public cloud services areas is like adding another data centre to the IT operation. Like any data centre the interoperability of the network, security and general server/ storage interconnectivity requirements need to be considered.
For example, when adding a public cloud there are always additional WAN network costs to provide bandwidth from the enterprise to the cloud location.
Using software defined WAN in combination with internet can offset some of the bandwidth costs of traditional leased line/ MPLS services but if the application is business critical there may be no other option to deliver the reliability required.
Likewise, the security constraints and support requirements become more complex to manage. A central security zone of trusted interconnectivity and hosting will need to be built between the various types of hosted operation. This may require multiple interconnections not only to remote user locations but between server locations.
This will require a good understanding of how everything interconnects. This knowledge will also be needed during problem determination such as when an application is reported as “slow”. You simply have to understand who you pick up the phone to call when it goes wrong.
By building a private cloud an enterprise can ultimately minimise the complexity and cost of the interoperability requirements as well as provide a predictable cost for well-defined workloads.
Summary and Conclusions
To say a client only needs to invest in new technology and skills to build a new private cloud though is wrong. Simply there is no “right” model for building cloud as no single cloud service offers everything an organisation will need.
But by utilising multiple cloud offerings of both public and private cloud an organisation can find the best blend of economics and service criteria over time and switch workloads as necessary.
There are many different ways that this interoperability can be implemented and managed, but the best solution will ultimately allow applications and components to securely interoperate between public and private clouds and allow applications to be portable across these environments.
However, reaching this ideal IT operating model is not always easy and requires many more skills and expertise than is required to run traditional IT services to deliver the required benefits. These include more comprehensive hybrid vendor/management solutions, as well as a greater expertise in designing, building and weaving together hybrid clouds.