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Berkay
Asked: 2010-03-04 09:25:27 +0800 CST

Does cloud storage replicate the data over many datacenters if so it means i benefit content delivery network?

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Let's assume that i want to use cloud storage service from one of the cloud storage provider, i got X gb structured and unstructured data and i will use this data as my contents of my interactive web page.

And now i have some doubts about this point.I have many users and they are all visiting my web page from various countries.To be more specific first;

does my data stored only of the Cloud Storage data center ? or Does my data replicated over many data centers of my provider?

second if so; how can i benefit from content delivery network? (matching and placing users’ content nearest storage data centers)

replication cloud-computing storage amazon-s3 cdn

3 Answers

  1. Best Answer
    • First question - it depends on what plan you're buying from your provider. Read up on what the offerings are.
    • Second question - it depends on what plan you're buying from your provider. This will probably be more costly than the first feature.

    Edit - I'll give you a concrete example. Amazon S3 says that your data will be replicated, I assume that means automatic failover if they lose an active site. (Although I would read the details of my SLA if I were buying from them.) They also say that you have to pick your region. So, for Amazon S3, the answers are (1) Yes and (2) No.

    But that's just for Amazon S3. Google may have different answers. Azure may have different answers. Rackspace may have different answers. Any of them may have multiple answers based on your checking account. There is no single answer for the broad category of "cloud storage.*

    Further edit - Amazon has a beta service called CloudFront, that offers a "Yes" to your second question.

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  2. mfinni is so on the money with this one - it really does depend.

    IF you contact a number of cloud-storage/CDN providers and specifically ask them if they can take your content, replicate it globally and ensure that it's globally load-balanced/delivered to your users from their closest replication point not only will some of them be able to do this but they'll shake your hand very warmly indeed because they will be making a great deal of money from you for this - it's VERY expensive for you if you want this to happen, but they will do it for you if you ask.

    Now what I think you want to know is will the replicate your data, as mfinni says 'it depends', on the provider and package you choose; will it be global, same answer; will they deliver it from there, almost certainly not by default but 'it depends' on the package you pay for - basically listen to mfinni and speak to various providers.

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  3. Your data may or may not get replicated to additional datacenters, though this is usually stipulated if true.

    To benefit from a CDN, you need to buy CDN services from a provider specifically offering this service, as cloud storage is not the same thing, though it is possible for some CDNs to offer you edge storage, which will replicate your files to multiple locations, and the price will be quite high, as they would be accounting for storing the same 1GB of files in multiple locations, so seeing price tags like 70 cents per GB or more is typical in these conditions.

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