磁盘高速缓存

Memory access speed is much higher than the disk, if the memory read and write as a disk cache can effectively improve the efficiency of system operation.

内存的读写速度比磁盘高得多，如果将内存作为磁盘读写的高速缓存可以有效提高系统运行效率。

Smartdrv.exe a major role in this paper is to increase the disk cache file reading and writing.

Smartdrv.exe这个文件主要作用是为磁盘文件读写增加高速缓存。

Each processor has its own caches,but they share the same global memory,disks and I/O devices.Only one copy of the operating system runs across all of the processors.

每一处理器都有自己的高速缓存，但它们共享相同的全局存储器、磁盘和I/O设备，仅有一个通过复制获得的操作系统在所有处理器间运行。

Secondly, the thesis analyzes the design principle of hardware system, and descries the architecture of the solution. It analyzes how to implement AD converter, IDT72V3690 circuit, FPGA chip EP1C2214 design, including RAIDO disk control and application of embedded microprocessor LPC2214.Thirdly, the thesis descripts the design and realization of embedded software of LPC2214. First of all, it brings out the thinking of software layer, and designs the software architecture.

其次，叙述了基于USB总线硬件系统的体系结构及设计原理；详细介绍了如何实现AD转换电路抗干扰以及如何采用嵌入式处理器LPC2214、高速缓存IDT72V3690电路、FPGA芯片EP1C2214等电路设计实现简易RAID0存储阵列；重点叙述了FPGA设计ATA控制器和RAIDO逻辑的过程，介绍了FPGA内部逻辑是如何工作，将数据有序高效地并行存储到磁盘中去的。

In such a model, a hybrid NAS/SAN server manages multi-user control information for SAN-stored data, serving as a traffic manager for disk reads and writes, preserving cache coherency for multi-user access and enforcing security semantics.

在这样的模型中，混合的NAS/SAN服务器为SAN存储的数据管理多用户控制信息，起到了磁盘读写的流量管理器的作用，保护多用户存取的高速缓存的相干性和实施安全语义。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。