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Network Function Virtualization (NFV) is an emerging technology proposed to improve service provisioning in telecommunication industry. The flexibility of NFV enables network operator to dynamically deploy Virtual Network Functions (VNFs) according to real-time requirements. However, a large amount of VNFs with low utilization may be deployed in network due to dynamic arrival and departure of services...
We propose Geo FS, a POSIX-compliant, wide-area distributed file system, which is used for sharing files between sites. Geo FS uses FUSE to provide standard file system interfaces to applications, it allows users to control over consistency and replication via extended attributes. In the era of big data, traditional file systems do not adapt well to update a large directory (i.e. Huge number of files...
Server consolidation schemes whereby each server is replaced with a virtual machine (VM) and multiple such VMs are run on a single physical server can reduce the number of physical servers needed, and in turn, both the cost and energy consumption in datacenters. However, existing schemes have not fully exploited the flexibility in the usage and allocation of virtualization resources, so as to allow...
The performance and scalability of centralized network storage systems cannot follow the processing needs of rapid growing data. Using large-capacity client caches is one of the solutions. This paper points out that the efficiency of "data exchange" between phases is the most important problem in managing large-capacity cache. And then, it defines Stable Set Model (SSM), which can characterize...
In this paper we propose a component-based analytical performance model for IP-SAN. We model four key components within IP-SAN individually and they are IP network, cache, RAID and disks. We validate these component models and compose them to give an entire IP-SAN performance model. The entire IP-SAN model analyzes the performance of an IP-SAN configuration under multiple synchronous workloads by...
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