In the world of virtualization storage it seems all we talk about lately is flash and SSD. There is a good reason for that. Traditionally, storage capacity and storage performance were directly linked. Sure, you could choose different disk capacities, but in general you needed to add capacity in order to add performance because each disk, each “spindle” could only support a certain number of I/Os per second, or IOPS. This was governed by the mechanical nature of the drives themselves, which had to wait for the seek arm to move to a different place on disk, wait for the seek arm to stop vibrating from the move, wait for the desired sector to rotate underneath the read head, etc. There’s only so much of that type of activity that can be done in a second, and in order to do more of it you needed to add more drives. Of course that has drawbacks, like increased power draw, more parts so more chance of failure, and increased licensing costs since many storage vendors charged based on capacity.
Flash memory takes most of what we know about the physics of storage and throws it away. Because there are no moving parts, the act of seeking on a solid state disk is a completely logical one. There are no heads, no sectors, no rotation speeds. It’s all the speed of light and however fast the controller can go. As such, flash memory can do enormous numbers of IOPS, and if implemented well, it decouples storage performance from storage capacity. You save power, you save data center space, you save money in licensing fees, and your workloads run faster. Continue reading SanDisk FlashSoft for VMware vSphere
In Management Frameworks Will Die we make the case that frameworks have failed because no one product can monitor everything, because management frameworks cannot be modernized to meet the needs of the Software Defined Data Center and the Cloud, because frameworks are too painful and expensive to maintain, and because customers prefer the “try it before you buy it” model of buying management software to the enterprise license agreement approach favored by the framework vendors. Continue reading What is Going to Replace the Legacy Management Frameworks?
Many IT and DevOps shops always look at governance as a dirty word because it sounds too much like government, which sounds too much like bureaucracy and waste. The problem with governance is not with governance itself, but with how organizations have tried to implement (or not implement) it. Gartner defines IT governance as
…the processes that ensure the effective and efficient use of IT in enabling an organization to achieve its goals.
That doesn’t sound so scary now does it? Yet very few organizations have done a good job of enforcing the policies, procedures, and architecture principles required for IT to ever achieve its mighty goals. Until now. Continue reading DevOps: Are We Finally Buying Into Governance?
Recently, I had the opportunity to talk about the shortest path bridging (SPB) protocol with Avaya while at Interop. This conversation was one of many with networking companies. While SPB is a very interesting protocol, my questions were about how deep into the virtual environment the protocol extends. While SPB and other networking protocols are considered by some to be network virtualization, I could not see this within the realm of the virtual network and hence, confusion reigned. Depending on who is talking to whom, the same words can mean many different things. What I found amazing, still, is that most people thinks networking ends at the physical NIC within the virtualization host, and that what is inside, does not matter as much as what is outside. Continue reading Virtual Networking Is Not Network Virtualization
Tintri Sets a New Bar in Storage: Tintri announced the next generation Tintri VMstore T600 series that has the capability to support twice the number of virtual machines per system when compared to the previous generations. In addition to the new T600 series, Tintri also announced the new Tintri Global Center, which is a new platform that enables global scaling of multiple Trintri VMstore systems and will seamlessly function as one global unit. Continue reading Tintri Sets a New Bar in Storage
Desktop Virtualization has forced us to change the way we deploy and manage desktops, and for the most part we have evolved our process to streamline updates, patches and security for these hosted environments. Not every use case can support a connected virtual desktop. For these users, they are often subject to the legacy tools and deployment methods, which makes the management of them challenging and limits the admin’s ability to control the quality of the desktop service. Continue reading Moka5: Managed Local Desktops in the Cloud