Storage Resource Managers

摘要: Storage Resource Managers (SRMs) are middleware components whose function is to provide dynamic space allocation and file management of shared storage on the Grid. They complement Compute Network in providing reservation information availability for planning execution a Grid job. SRMs manage two types resources: files. When managing space, negotiate with requesting client, and/or assign default quotas. files, allocate invoke transfer services move files into pin certain lifetime, release upon clients request, use replacement policies optimize space. can be designed effective sharing by monitoring activity make decisions which replace when needed. In addition, perform automatic garbage collection unused removing selected lifetime has expired this chapter we discuss design considerations SRMs, their functionality, interfaces. We demonstrate several examples real implementations that today routine fashion or prototype form.