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Storage & Clustering Community Blog
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D White | 11 Dec 2012 | 1 comment

I could point readers at the myriad of articles on a certain lack of certification for x86 hypervisors or open up the proverbial can of worms by digging into the complex details of licensing or support policies.....but I'll resist that temptation for now as there are actually some technical concerns that would prevent me from running production databases on an x86 hypervisor platform.

Thinking about it logically, databases have long been designed to manage memory allocations and features such as AMM (Automatic Memory Management) were designed around the principle of having dedicated RAM managed by database technologies. In a virtualised environment, hypervisors have their own memory management tools which are largely designed around the principal that the sum total of the virtual machine memory will exceed that of the physical memory in the server so features such as memory reservations, shares and "balooning" are designed to enable over-...

bpascua | 11 Dec 2012 | 0 comments

Over the past six months I have seen a resurgence in interest in the Veritas Cluster Server brand, this is due to a number of factors. Firstly I strongly believe that Data Centre's are finally beginning to virtualise their critical applications. Secondly the latest version fo Veritas Cluster Server now includes Vmware support for seamless failover using VMDK disks. I have recently been involved in three projects where customers have been testing Veritas Cluster Server against Oracle and Websphere to make sure it can actually do what it says on the tin. I am pleased to announce that yes it actually works and all have been successful. As anticipated the ability to use the native VMDK as a unit of failover is making customers considerably less nervous about virtualising their applications. This is great news for both Symantec and our loyal customers.

I was also delighted to see that Symantec have also released a support statement for our Cluster Filesystem in Vmware...

sai_mukundan | 10 Dec 2012 | 1 comment


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dennis_wenk | 10 Dec 2012 | 0 comments

Difficult economic conditions lead to fiscal belt tightening, however, the ever-increasing demand for data continues; accelerating the requirement for hardware to manage the data.  Big data and its appetite for hardware become prominent line items which appear like ripe, low hanging fruit to many cost-cutters.  Buying low priced, ‘good enough’ or mediocre equipment starts to emerge as an opportunity to reduce a burgeoning budgetary item.  Price of the hardware however, is only one part of the total cost equation.

Low-cost gear costs less not just because of limited functionality; it is lower cost because a number of engineering short cuts are taken during manufacturing.  For example, using lower-tolerance components that have higher failure-rates or removing redundant components are common ways to reduce production cost.   These short-cuts, however, negatively impact overall reliability and increase the failure rate....

dennis_wenk | 10 Dec 2012 | 0 comments

The benefits of data center consolidation are apparent; they save millions of dollars and improve the overall quality of service.  It is easy to see that too many data centers adds unnecessary costs, it chips away at manageability, increases complexity and contributes to a number of operating inefficiencies.  Realizing the economic benefits of data center consolidation can be elusive, the challenge is to circumvent the potential pitfalls that complicated the transformation process.

Data center consolidations involve much more than just moving servers or data from one location into another.  Data centers have become a conglomeration of disparate technologies running on combination of virtual platforms, physical platforms, and clustered platforms that operate an assortment of systems and access a range of data-tiers that are stored on multiple arrays from a whole host of hardware vendors.  

In addition to the...

Kimberley | 30 Nov 2012 | 0 comments


Red Hat & Symantec Join Forces to Accelerate Next Generation Clouds

Commercially supported enterprise Linux platforms have an incredibly bright future as core building blocks for next-generation, highly resilient data centers and agile private and hybrid clouds. Yet to fully optimize Linux to support the demands of increasingly business-critical workloads, organizations need to heed enterprise requirements around disaster recovery, high availability, and storage management. To facilitate such a demand, Symantec and Red Hat have partnered together. As a partnership “built on strengths,” Red Hat and Symantec provide the following solutions: Automated off-premise disaster recovery, cost-effective failover for Oracle databases, and improved storage performance for heterogeneous data centers. Further, customers achieve low-cost, flexibility and more robust performance. To learn more about this unique...

Hari Krishna Vemuri | 28 Nov 2012 | 0 comments

When using the VxDMP vSphere UI plugin, the vSphere administrator can quickly figure out the purpose of various VxDMP parameters, what the values represent, and how various operations can be performed using the online context sensitive documentation that is available along with the vCenter UI plugin.


The administrator can click the Help icon (?) on any of the VxDMP vSphere UI views and the information pertaining to the view is automatically presented in a popup window for quick reference.



The documentation is organized in form of chapters similar to the administration guide that comes with the product to help in quick reference. It  also allows keyword and index based searches.



I would like to hear back about your thoughts and...

Hari Krishna Vemuri | 28 Nov 2012 | 0 comments

The standard administration of a VMware vSphere environment is typically performed using the vSphere client UI, but some of the advanced functionality and automation can only be done using custom scripts that use the remote command line interfaces.


The VxDMP command-line packages can be obtained from the installation media or downloaded from VxDMP UI as shown below



VxDMP for VMware follows this philosophy and provides the familiar and widely-used cross-platform administration command line interfaces for the VMware ESX environment as well. The VxDMP commands can be executed from any Linux or Windows host that has the VxDMP command line administration package installed on it.


The command line interface has also been enhanced for VMware...

Hari Krishna Vemuri | 28 Nov 2012 | 0 comments

With the sizes of data centers ever increasing, it has become a challenge to monitor the settings on the large number of servers in the environment and make them consistent so that compliance needs are met. Also, when new servers are provisioned in the environment, it’s a challenge to tune them according to the constraints of the operating environment.


VxDMP helps to reduce this burden on the vSphere infrastructure administrator by providing a bird’s eye view of the data center compliance under “Solutions and Applications” category under the ‘Home’ view of the vSphere UI client showing

  • Percentage and number of ESX hosts licensed with VxDMP,
  • Percentage and number of ESX hosts using VxDMP without a license
  • Percentage and number of ESX hosts which have not deployed VxDMP.



Hari Krishna Vemuri | 28 Nov 2012 | 0 comments

In large data centers, whenever the storage administrator requires to perform maintenance operations on a SAN infrastructure component, it’s difficult to identify all the entities in the data center are currently using it. Typically, the storage administrator needs to run various set of inquiries and provide list of transport identifiers (WWN mappings, iSCSI target IDs) that would be affected by the maintenance operation to the vSphere administrator who then, in turn, needs to search through the environment to identify the set of affected ESX hosts and the running virtual machines. This process is time consuming, tiring and error prone.  Additionally due to the dynamic nature of VMware, the configuration information can change very quickly; the location of a virtual machine may be different than it was mere minutes ago.


VxDMP helps ease this painful process by providing visibility into the vSphere entities that are currently ...