Deadline Guaranteed Service for Multi-Tenant Cloud Storage

Deadline Guaranteed Service for Multi-Tenant Cloud Storage

Abstract—Deadline Guaranteed Service for Multi-Tenant Cloud Storage.It is imperative for cloud storage systems to be able to provide deadline guaranteed services according to service level agreements SLAs < Final Year Projects 2016 > for online services. In spite of many previous works on deadline aware solutions, most of them focus on scheduling work flows or resource reservation in datacenter networks but neglect the server overload problem in cloud storage systems that prevents providing the deadline guaranteed services. We introduce a new form of SLAs, which enables each tenant to specify a percentage of its requests it wishes to serve within a specified deadline We first identify the multiple objectives (i.e., traffic and latency minimization, resource utilization maximization) in developing schemes to satisfy the SLAs. To satisfy the SLAs while achieving the multi-objectives, we propose a Parallel Deadline Guaranteed (PDG) scheme, which schedules data reallocation (through load re-assignment and data replication) using a tree-based bottom-up parallel process.