基于层次化请求过滤的SonD无盘Windows

SonD Diskless Windows Based on Hierarchical Request Filter

按需服务无盘Windows通过在Windows2K/XP内核中虚拟小型计算机系统接口(SCSI)设备,将SCSI设备的读写请求转化为网络磁盘的读写请求与服务器端通信,实现远程无盘启动Windows的软件解决方案。该技术有效地将存储资源和计算资源分离后动态结合,实现存储资源的统一管理和计算资源的合理分配。基于Windows的分层驱动模型,还提出了层次化请求过滤技术。

This paper provides a software solution called SonD diskless Windows. The Windows simulates a virtual SCSI device in Windows2K/XP kernel mode to redirect local SCSI requests to network block device and performs data I/O with remote storage server. In this way, the computation and storage resources can be separated and then mapped dynamically to manage the storage resources unitedly and distribute the computation resources reasonable. In order to improve the performance of virtual SCSI device, a new request processing technique based on Windows hierarchical driver model called Hierarchical Request Filter（HRF） is presented. By exploiting this technique, the I/O performance of virtual network disk is improved.