back to article You've tested the cloud – now get ready and take a bigger step

The move to cloud computing in enterprises has until recently largely been confined to new greenfield applications, test and development solutions or software-as-a-service solutions from companies such as Salesforce. The one factor that these applications share is that they are not on the whole critical to the business. But …

  1. Anonymous Coward
    Anonymous Coward

    One acronym: NBN

    And that speaks volumes right there about anything to do with networks and Telstra. I'm a Yank and I get that. As for rest of that press release, they haven't a clue what transitioning a real legacy enterprise application requires, just from one architecture to another, let alone transforming the infrastructure, code, and databases along the way. Performing a root canal on yourself is definitely easier and involves less pain and I've had a lot of root canals! It's not like standing up on someone else's hardware remotely and calling it good. Which is probably no one else is chiming in, the whole article was insane.

  2. David Roberts Silver badge
    WTF?

    Que?

    "Large enterprises may have many mission-critical legacy applications, but for most companies it is unrealistic to employ experts to sit around just in case an application fails. "

    Where is the icon for the large pile of steaming bovine excrement?

    Or do most corporates not bother with IT support for mission critical applications?

  3. Doctor Syntax Silver badge

    Clever...

    ...it lists the drivers influencing migration but neglects to say whether those influences were for or against.

  4. x 7

    "A recent Telstra survey asked IT managers what were the drivers influencing their move to the cloud and the top five answers were:

    Improving security (71 per cent)"

    there you go, thats their claimed top answer

    How does handing your data over to a third party increase security? This "survey" is total bunkum. The methodology cannot be valid

  5. Anonymous Coward
    Anonymous Coward

    Better availability/security? really??

    "Legacy" apps are not written in a loosely coupled way so they cannot grow/shrink to demand in a public cloud. To take full advantage of cloud, the apps need to be re-written.

    But, assuming you just take these legacy apps and run them as an IaaS instance, and assuming you can get around the introduced network latencies and *increased* security issues (I say this not due to the cloud provider infrastructure, but to the lack of corporate maturity governing processes, hybrid setups etc) and assume you use Azure:

    How do you protect against random IaaS VM reboots due to host maintenance?

    http://blogs.msdn.com/b/mast/archive/2013/09/24/windows-azure-virtual-machine-restarted-or-shutdown-with-out-any-notification.aspx

    Also note, there is no SLA on single instance VMs, you need to double up with availability sets (if it is even possible for the (legacy) app which is doubtful

    https://azure.microsoft.com/en-us/documentation/articles/virtual-machines-manage-availability/#avoid-single-instance-virtual-machines-in-availability-sets

  6. Lusty

    Agree with AC, many apps just can't be made highly available in the cloud which means they can never meet SLAs for being up during the working day.

    Also what's all this jibber jabber about uncertain latency. If you need reliable connectivity, put the cloud on your MPLS with direct connect or express route!

  7. Trevor_Pott Gold badge

    Network connectivity is one of the major barriers. Just how do you know which part of the web is causing a problem? How do you test and manage response times and latencies, especially if your audience now includes users on mobile devices?

    www.thousandeyes.com. Solved.

    Is Azure, Amazon or one of the hundreds of different cloud providers offering the right platform for your particular application?

    Nope. Not unless you're A) American, B) picking a public provider in your jurisdiction or C) building a private cloud.

    “To burst into the cloud sounds like a great vision but how do you actually do it? How do you implement it? How do you set it up to be flexible? You need clever bits of software and people who can manage that software,”

    Not really. The software is relatively commonplace and the skills for it are mundane. You just have to be prepared to spend. And spend and spend and spend. People with those skills are smart, and they won't be treated like crap. Companies with that software charge a lot. And you need great reliable internet connectivity and your ISP is going to take it out of your genitals. With prejudice.

    Sounds easy? Maybe not, but if you plan your transition to a hybrid cloud setup correctly you will retain control over your IT. You get to choose how you customise your environment for your workloads.

    No, your ISP does. They control the pipe and you do exactly as they say. Same with your hypervisor/management tools vendor. And your tin shifter. And your storage overlords. And - above all else - your government, who may well demand that any company large enough to be seriously looking at hybrid cloud computing build in back doors to allow the spooks to pwn us all in the information so that they can nose out political dissidents.

    You are not in control. Everyone else is in control. You just give them money and hope they leave you alone long enough to retire. Even if you're a Fortune 1000 company.

    So design your networks with that in mind. If your duty of care - and your legal obligations - run towards the protection of your customers'/employees' data, then you absolutely must treat your ISP, your vendors and your government as hostile agents who are just as likely to try to cause compromise as any outside hacker. They'll use different means, but you need to be prepared to defend against them nonetheless.

  8. yoganmahew

    Cheaper?

    How is a hybrid cloud (doubling the number of technologies you support) with smart (expensive) people supposed to be cheaper?

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