The Importance of Live Migration Capabilities in Modern Datacenters

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Recently the popular Xen hypervisor system showed its limitations due to leading cloud service providers being forced to reboot chunks of their compute instances due to a glitch in the software. In the past, this may have been an acceptable solution, however now that datacenters are powering mission critical applications, system administrators need to know all their options when it comes to protecting their servers from expected and unexpected downtime.

Rackmounted Servers in a Data Center

For any data center using cloud technologies, live migration is an ideal way to minimize downtime as it allows the host to move the guest virtual machine (VM) to another machine while the original system reboots. This is typically done in two ways:

Pre-co


Internal Application Monitoring DO’s and DON’T’s

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If you think that monitoring your external-facing applications is enough to have your bases covered, think again. User escalations and complaints are much more likely to arise from your internal users than from customers and prospects. In fact, when external applications underperform, visitors will abandon to your competitors (some will also vent in Social Media channels). When internal apps slow down, regardless of where they are deployed, in your datacenter or in the cloud, phone calls to your helpdesk will start immediately as productivity stops. And remember, escalations from your VP of Sales or CFO will definitely get attention from your manager and upper management, which is not good news for you…


XML Formatter for Enhanced Content Visibility – Site24x7 Free Tool

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Last month, I was caught in a tight spot. The website I was working on couldn’t go live because I couldn’t comprehend its sitemap! Yes, it does sound trivial, but the XML sitemap that my colleague shared didn’t have the right indentation and the elements and attributes were all clustered together. I couldn’t identify the right tags to make the required changes and get the website up. One thing that could have saved my day was a formatting tool. A tool that would format and highlight the data so that one could comprehend the sitemap at a glance.

XML_formatter

Are you also in search ​of such a tool? A tool that makes reading XML documents a cakewalk? Well then, we have something for you. Here’s Site…


Slash Costs by Using One IP for Multiple SSL Certificates

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For data center administrators, managing secure websites can be a costly endeavor due to the common requirement that every SSL certificate have its own IP address. Aside from requiring administrators to purchase multiple addresses, data center professionals often are forced to purchase multiple network adapters to handle the additional demand. Fortunately Apache v2.2.12 and OpenSSL v0.9.8j along with later versions now support the TLS Extension Server Name Indication (SNI) which allows multiple SSL certificates to be used with a single IP.

business man practice yoga at network server room

SNI technology works by allowing clients to include the hostname in the first message of the SSL handshake. This then allows the server to determine the appropri…


5 Useful Security Tips Every Business Needs After Sony Hack

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The ill- fated Sony attack

With National Cyber security awareness month coming to an end and the business headlines still talking about data breaches, here comes the next big one: Sony Pictures fell prey to a hacker attack which led to sensitive data being exposed on torrent networks.

Network Security Tips

Reports say close to 25 GB of confidential information including movies, payroll information, social security and health care data of close to 7500 employees went public. Even worse, the malware seems to have even wiped off critical data from the hard drives of affected systems. In a recent speech, former NSA Director Keith Alexander highlighted the scope of the threat to U.S businesses and the government.

Breaches Seem to be Sc