Virtual Machine Workloads: The Case for New Benchmarks for NAS

Provided by: USENIX
Topic: Data Centers
Format: PDF
By the end of 2012 almost half of all applications running on x86 servers will be virtualized; in 2014 this number is projected to be close to 70%. Network Attached Storage (NAS) and Virtual Machines (VMs) are widely used in data centers thanks to their manageability, scalability, and ability to consolidate resources. But the shift from physical to virtual clients drastically changes the I/O workloads seen on NAS servers, due to guest file system encapsulation in virtual disk images and the multiplexing of request streams from different VMs. Unfortunately, current NAS workload generators and benchmarks produce workloads typical to physical machines.

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