According to Jack O’Brien, vice president of marketing for Gluster, VMware images are just another type of file, which means that NAS systems are a more efficient approach for handing VMware storage requirements versus using block-level storage associated with SAN environments.

With the addition of VMStor to the Gluster Storage Platform, Gluster is extending its elastic approach to providing storage using a global name space architecture to be extended to the virtual environment, said O’Brien. This approach means that IT organizations are not dependent on any proprietary approach to managing metadata, while still giving IT organizations an inexpensive approach to scaling out storage systems that minimizes I/O contention, he added.
Other features of VMStor include the ability to integrate with VMware user interface, the ability to take snapshots of VMware images, one-click backup, and support for NFS.
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