The answer to that question is a bit unexpected, especially when compared to disk-based filesystems.
这个问题的答案有点意外，特别是在和基于磁盘的文件系统比较的时候。
In a traditional disk-based database, the corresponding times are typically measured in milliseconds.
在传统的基于磁盘的数据库中，对应的时间通常是以毫秒计算的。
The system is able to fit everything into physical memory without having to resort to slow, disk-based swap space.
系统现在可以全部装入物理内存，而不必借助慢速的基于磁盘的交换空间。
Storage servers and disks — You can connect several storage servers to a disk-based backend using various mechanisms.
存储服务器和磁盘——可以用多种机制把多台存储服务器连接到基于磁盘的后端。
If this is not the case, disk-offload can help move less-often accessed context data to and from disk-based storage.
如果不是这样，则磁盘分流功能可以帮助将不常访问的上下文数据移动到基于磁盘的存储，或者将上下文数据从基于磁盘的存储移动到缓存。
Embedded systems may use a ROM-based operating system or a disk-based system, like a PC.
嵌入式系统可以使用基于ROM的操作系统或基于磁盘的系统，如PC。
For a long time researchers only focus on disk-based index, but research on memory-based index is of great value today because of the mass memory condition.
以往大部分学者都集中研究磁盘索引，但其实在目前大内存的环境下对内存索引的研究也是非常必要。
Note that I could have chosen a disk-based embedded database or a server-side database. I've chosen to use the HSQLDB memory-based database for demonstration purposes.
请注意，我可以选一个基于磁盘的内嵌式数据库或服务器端数据库，但出于演示的目的，我选了HSQLDB基于内存的数据库。
This method combines memory-based table with disk-based table, it not only provides good performance, but also solves the problem of memory table's permanent storage.
该方法结合内存表和磁盘表两种机制，不但提供快速的性能，而且解决了内存表的永久保存问题。
Based on the balance disk structure and operational principle, the measure, analysis and control system was designed in the paper.
基于平衡盘的结构和工作原理，设计了相应的测量、分析和控制系统。
Since they are network based, all the complications of network programming kick in, thus making distributed filesystems more complex than regular disk filesystems.
由于是以网络为基础，也就引入了网络编程的复杂性，因此使得分布式文件系统比普通的磁盘文件系统更加复杂。
Memory and CPU based access can provide much lower latency and greater throughput than disk and network based access.
相比基于磁盘和网络的访问，基于内存和CPU的访问能提供更低的延迟和更高的吞吐量。
Based on the disk partition to which the file system belongs, this routine returns the same disk usage statistics in bytes for all directories in that partition.
根据文件系统所属的磁盘分区，此流程将对该分区的所有目录返回相同的磁盘使用量统计数据(以字节为单位)。
This paper is about the problem of segmentation of eyeground optic disk image, based on method of computer image processing.
本文研究了基于计算机图像处理技术的眼底视盘图像的自动分割方法。
Based on analogous Theory, the large sized disk saw machine model is manufactured. The sound and vibration properties of model saw blades are studied systematically and deeply via experiments.
根据相似理论设计制造了大型圆盘锯机模型，通过实验对模型锯片的声振特性进行了系统深入的研究。
This paper introduces a phase change optical disk static tester with high performance but low cost based on a commercial optical disk drive.
本文介绍一台基于商用光盘机的高性能价格比的相变类光盘材料静态测试仪。
Caching on the client and server side could be on disk or memory, based on the kind of loads generated in the system.
在客户机和服务器端进行缓存可以在磁盘或内存中进行，这可以根据系统中所生成的负载的类型来决定。
Aiming at these problems above, a storage structure based on intelligent network disk (IND) is presented, and then the hardware and software model of the interface of IND is described in detail.
针对上述问题，文章提出了一种基于智能网络磁盘(IND)的存储架构，并具体阐述了IND接口的硬件和软件模型。
Introduced volume backup technology based on SAN and disk array in SRM and studied the backup model and backup plan of volume backup.
介绍了SRM系统中基于SAN和磁盘阵列的卷复制技术，对备份模型和备份方案进行了论述。
That will undoubtedly differ for each machine, based on processor speed, disk controller, hard drive, and operating system version.
根据处理器速度，磁盘控制器，硬盘驱动器和操作系统版本，这对于每台机器无疑是不同的。
Modify XML on disk and store new version of modified XML: a modified version of the XML is created based on the original XML.
修改磁盘上的XML，并另外存储修改后的新的XML：根据原始的XML创建一个修改后的XML。
This paper analyzes the admission controls of large-scale video storage server and the admission tactics of video server based on disk system.
分析了大规模视频存储服务器的准入控制和基于磁盘系统的视频服务器的准入控制策略。
The tag tap:aio is used to represent a logical disk based on the image file, while the tag phy represents a physical disk.
标记tap:aio用于表示基于镜像文件的一个逻辑磁盘，而标记phy表示一个物理磁盘。
Recent researches indicate that one of the efficient I /O optimizing methods is the disk access optimizing based on the physical features of the disk.
最新研究表明，基于磁盘准确的物理特性进行相应的磁盘访问优化是提高磁盘I/O的有效方法。
To improve the efficiency of disk scheduling, this paper proposed an optimization algorithm of disk scheduling based on the Average Seek Time (AST).
针对如何提高磁盘调度效率的问题，提出了一种基于平均寻道时间(ast)的磁盘调度优化算法。
To investigate the disk scheduling algorithms used in NAS devices, we put forward a new test model based on the NAS device disk scheduling.
为了考察NAS设备中使用的磁盘调度算法，提供一种新的基于NAS磁盘调度的测试模型。
Modify XML on disk and store modified XML in-place: a modified version of the XML is created based on the original XML.
修改磁盘上的XML并在原位置存储修改后的XML：根据原始的XML创建一个修改后的XML。
The paper puts forward a new standard for high density optical disk based on MPEG-2, and introduces the product system for the new standard disk.
提出了一种基于MPEG2编码的高密度光盘新标准，并介绍了新标准光盘的制作系统。
Otherwise, the client will fall back to a random-string generator based on time of day, free disk space, and other host-specific information.
否则，客户端将退回到一个基于时间、剩余磁盘空间以及其他的主机特定信息的随机字符串生成器。
Based on research and analysis of disaster recovery, network storages, backup and disk array technologies, this thesis designs and implements of a SAN-oriented remote mirroring system.
本文在研究和分析容灾技术、网络存储技术、备份技术、磁盘阵列技术的基础上，设计并实现了一种基于SAN的远程镜像系统。
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