Virtualization has disrupted the I/O path, reducing the value of enterprise storage arrays. But all is not lost: An effort is afoot to make things right by increasing communication between hypervisor and array and demultiplexing data before it is stored. “What we have here is a failure to communicate” The core problem with the I/O blender is that virtual machine disk images … [Read more...] about The I/O Blender Part 3: Behold the Power of the Demultiplexer
Virtualization is a disruptive technology in every sense of the word. By abstracting and simplifying physical resources, virtualization enables dynamic utilization. But this “translation” from physical to virtual disrupts the assumptions that enable performance and flexibility of physical devices such as storage arrays. Your Assumption Is Invalid See Storage Arrays Do A … [Read more...] about The I/O Blender Part 2: What Does Virtualization Do?
Storage arrays are big, expensive, and difficult to manage. Plus, concentrating storage in a single device puts everything at risk if there is an outage. So why buy a storage array at all? Arrays do a few things very well, and this often makes up for the difference, on balance. Storage Arrays Accelerate Performance One of the most important advancements in data storage in … [Read more...] about Storage Arrays Do A Few Things Very Well
I talk to dozens of companies every week, and every one says the same thing: “Our product is compatible with VMware!” But not everyone's definition of “compatible” is the same, and some are not compatible (I couldn't resist) with the requirements of production data centers. Therefore, I present to you my spectrum of compatibility for VMware. A Spectrum of … [Read more...] about “Our Storage Array Is Compatible with VMware…” Says Who?
The time has come to take sides on the core question of storage for virtual servers: Do you want storage intelligence to live in the hypervisor or the array? Most administrators are already lining up on one side or the other, unintentionally casting their vote while the rest flounder. But the storage industry must wake up and embrace the divide. Hypervisor Huggers … [Read more...] about Are You a Hypervisor Hugger or a Storage Stalwart?