Posts Tagged ‘ storage ’

Christos Karamanolis

VMware and the Future of Storage and Availability

July 15, 2015
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VMware and the Future of Storage and Availability

From the early days of VMware, it became clear that dealing with storage in efficient and scalable ways were key requirements for the success of virtualization in enterprise environments. Indeed, the storage stack of ESXi, including VMFS, played a key role in the proliferation of virtualization in data centers, where data is stored and managed by high-end disk arrays. Based on those foundations of storage virtualization, over the years, VMware introduced a range of availability and data management solutions ranging from HA, DRS and FT to Disaster Recovery and Data Protection. Moreover, VMware encouraged and supported a vast ecosystem of partners who innovated on the vSphere platform. See for example, the  VADP  ecosystem and more recently  Read more

Why Object Storage Is Making Inroads Into Enterprise Storage Deployments

April 2, 2015
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The amount of data stored within an enterprise is growing at a phenomenal rate. In the late ‘90s, a storage system with one petabyte capacity was considered a great accomplishment— you got your name in news articles and also got invited to give conference keynotes! Today, the storage industry talks in terms of exabytes and zettabytes. Unless you have been living under a rock for the last few years, this should come as no surprise— the phenomenal growth rates (50-60% CAGR), coupled with the growing need to harness data-driven insights for business decision-making (commonly referred to as ‘Big Data’), are redefining how enterprises manage the lifecycle of data. While the overall data growth has been exponential, not all data is active at the same...

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Relevance of POSIX in the Big Data Era?

February 27, 2015
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Let’s start with a thought exercise: imagine your application issues a write() call followed by a read(). What would you expect to get back in the read operation? Here are your options: Always get back the latest update Get back either the latest update or the previous value, but never partial updates Always get back the latest update if the read is issued from within the same session Once the latest value is returned by the read, the subsequent reads will never return the old stale value i.e., monotonic guarantee Bounded staleness i.e., reads issued after a given interval will always see the latest updates And so on... All the options listed above are valid -- the correct answer depends on the internal implementation...

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Christos Karamanolis

On the Balkanization of Data Storage

January 5, 2015
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On the Balkanization of Data Storage

  Historical Parallels 2014 marked the centennial of the beginning of the First World War (WWI): an event that had a terrible human cost and paved the way to major political and social changes across the globe. The centennial steered a wave of retrospection around the events and causes that led to WWI  (ref. The Sleepwalkers: How Europe went to War in 1914 by Christopher Clark , The Guns of August by Barbara W. Tuchman ). Historians have suggested technological advances, especially in engines and communications, as both a reason for the geopolitical instability that preceded the war, and the main cause for the resulting unprecedented casualty rate. Credit: The National Archives (UK) WWI turned Europe from a land of powerful empires...

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williamjearl

Storage Directions for the Software-Defined Datacenter

September 7, 2012
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Storage Directions for the Software-Defined Datacenter

The demand for services in datacenters is steadily growing as companies recognize the value of setting up or growing a service in seconds or minutes and of able to increase business agility.  Traditional datacenters have made use of a great deal of specialized hardware, requiring a large amount of manual configuration and management, as well as complex resource management.

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Christos Karamanolis

A Preview of Distributed Storage

September 7, 2012
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A Preview of Distributed Storage

VMware shared a technology preview of Distributed Storage at VMworld 2012 as part of our broader storage strategy . Steve Herrod described this technology as “virtual SAN” in his Day 1 keynote at VMworld. Distributed Storage (DS), currently under development by VMware engineers, is a distributed layer of software running natively as part of the ESX hypervisor. It aggregates the hosts’ local storage devices (SSD and HDD) and makes them appear as a single pool of storage shared across all hosts. In other words, we are doing with local storage what we have done in the past with CPU and memory – virtualize the physical resources of ESX hosts and turn them into pools that can be carved up and assigned...

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