Cloud Computing Blog

Jamal Mazhar

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Top Stories by Jamal Mazhar

University of Berkley has published an excellent paper on cloud computing, the argument regarding data security in the cloud is that encrypted data in the cloud can be more secure than unencrypted data in the internal datacenter. Almost nobody uses encryption in internal datacenters as they are percieved as secure.  Here is an excerpt from the study: “We believe that there are no fundamental obstacles to making a cloud-computing environment as secure as the vast majority of in-house IT environments, and that many of the obstacles can be overcome immediately with well understood technologies such as encrypted storage, Virtual Local Area Networks, and network middle boxes (e.g. firewalls, packet filters). For example, encrypting data before placing it in a Cloud may be even more secure than unencrypted data in a local data center; this approach was successfully used ... (more)

Managing IT Risks in a Cloudy World – Take away from Amazon recent outage

Several popular websites and companies were impacted by the recent Amazon cloud outage.  It was quite surprising to see that so many of the companies had no backup plans to restore their applications at an alternate location.  Just because we are using cloud doesn’t mean that we should forget all the lessons we have learned over the years in managing IT risks.  There are several ways companies can mitigate their risk exposure due to these types of outages.  For example one of Kaavo’s customers runs their application across Amazon and Rackspace cloud using Kaavo IMOD; ... (more)

Building a Private Cloud Within a Public Cloud

One of our customers wanted to establish a site to site connectivity between their datacenter and  public cloud (Amazon EC2) and then have a private network within Amazon EC2 with their own custom IP addresses for their servers in the cloud.  Basically the idea here is to augment the internal datacenter resources with the resources in the public cloud securely so that the servers in the cloud appear as if they are part of their own private corporate network.  The idea here is to isolate the servers used by the customer in the cloud from the rest of the servers in the cloud using ... (more)

More on Benefits and Challenges of Cloud Computing

Here is the revised version of the bar-chart I posted in the previous blog. It shows the evolution of IT to explain the benefits and challenges of cloud computing, and showing why and how we got to ... (more)

Using Cloud for Disaster Recovery

Use of cloud for DR solutions is becoming more common, even the organizations which are not using cloud for mission critical production applications are moving towards using cloud for application DR. Business Case for Using Cloud for the DR Faster Recovery Time Objective (RTO): Typically DR requires lengthy manual processes to fully restore the business applications at the DR site.  Having backup data and servers at the DR site is easy, however, restoring the entire application or service takes time.  E.g. full application restoration requires starting services in specified order... (more)