Correcting Persistent Myths About Virtual Volumes

By Chris Preimesberger  |  Posted 2015-07-09

Containers, virtual machines, virtual disks, virtual volumes—virtual storage in all forms can be complicated to parse as to which is most effective in a particular IT system. We won't try and cover all of them here, but we will examine vSphere Virtual Volume (VVOL) and try and dispel some myths. VVOLs are composed of an out-of-band communication protocol between VMware vSphere and storage. They allow VMware to associate VMs and vDisks with storage entities. They also enable vSphere to offload some storage management functions, such as snapshots and clones, to storage. This offloading allows virtualization administrators to get the same performance and scalability through the VMware tools as they expect to get through their storage. The VVOL API defines the interface between vSphere and storage, but it does not change the underlying storage architecture. The scale and performance of a storage system is still determined by the storage implementation itself. In this eWEEK slide show, with virtual storage provider Tintri as a key resource, we examine some of the myths that are circulating about VVOLs.


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