如果文件名是空字符串，那么将创建私有的、临时磁盘数据库。
If the filename is an empty string, then a private, temporary on-disk database will be created.
本文以内存数据库和磁盘数据库技术为基础，对关键业务的应用服务器中业务对象的并发控制技术进行了研究。
Based on the known technologies of MMDB and DRDB, this thesis studies the concurrency control mechanism for business objects in application servers of critical business.
包括所有维护服务器系统的系统信息，以及所有存储在磁盘组件内的数据库数据。
All the system information to maintain the server system, and all databases data are stored within the disk component.
由于数据网格的主要特征是可伸缩性和高可用性，专门用于持久性的高速磁盘和数据库在大多数情况下不再需要。
Since the primary characteristics of a data grid are scalability and high availability, high-speed disks and databases used exclusively for persistence are no longer needed in most cases.
执行磁盘的故障转移以便数据库处理能够在主站点继续，如清单18所示。
Perform the disk failover such that database processing can continue at the primary site, as shown in Listing 18.
自动存储会自动增加数据库在磁盘和文件系统上的大小。
Automatic storage automatically grows the size of your database across disk and file systems.
如何节省分析数据库中的磁盘空间？
总之，弹性数据网格提高了硬件利用率，减少了昂贵的冗余事务，消除了用于持久性的高速磁盘和数据库的必要性。
In summary, elastic data grids improve hardware utilization, reduce costly redundant transactions, and eliminate the need for a high speed disk and database used for persistence.
因此，添加延时会增加数据库和磁盘的使用率。
Adding time delays therefore increases database and disk usage.
分析数据库中磁盘使用：在规则执行过程中创建了什么项目？
Disk usage in the analysis database: What artifacts are created during the execution of a rule?
另外，通常需要高速磁盘或数据库(或二者)，以增加缓存大小，或获取高可用性。
Additionally, high-speed disks or databases (or both) are typically required to increase the size of the cache, or for high availability.
当数据连续时，用于访问磁盘上数据的时间最少，数据库服务器可以更快地读取数据。
When data are contiguous, the time used to access data on the disk is minimized and the database server can read data faster.
磁盘访问率和配置影响数据库、视图打开和集合导航(查看索引)的速度。
Disk access rates and configurations affect the speed of database and view opening and of opening and navigating a collection (view index).
增加页清除程序的数量还会减少“软”故障(比如断电)的恢复时间，因为磁盘上数据库的内容在任何给定时候都是比较新的。
Increasing the page cleaners will also reduce recovery time from soft failures, such as power outages, because the contents of the database on disk will be more up-to-date at any given time.
该系统总共有112个磁盘驱动器可用于数据库。
In total, there are 112 disk drives in the system for the database.
每多一个服务器，就意味着将有更多的CPU、内存和更多的磁盘用于分区数据库。
Each additional server means more CPUs, more memory, and more disks for your partitioned database.
因为数据库可以得到磁盘支持，基本上能够处理任意大型的文档。
Because databases can be disk backed, they can essentially process arbitrarily large documents.
三个磁盘用于消息传递数据库表空间。
将应用程序与网络磁盘和数据库同步。
两个磁盘用于BPC数据库的事务日志，可以采用逻辑带状设置，但最好采用硬件支持的带状设置，以实现更低的延迟和更高的流量。
Two disks for the transaction log of the BPC database, either logically striped or preferably hardware-supported striped for lower latency and higher throughput.
将磁盘（文件）数据库绑定到散列是一个得到了深入讨论的主题。
Tying disk (file) databases to a hash is a well-covered topic.
对磁盘的许多调优(尤其是对于数据库)集中于避免磁盘访问，因为磁盘访问的延迟相当高。
Much of the tuning to follow, especially that pertaining to the database, focuses on avoiding disk access because of the relatively high latency it incurs.
SQLite支持大小高达2TB的数据库，每个数据库完全存储在单个磁盘文件中。
SQLite supports databases of up to 2 TB, with each database stored entirely in a single disk file.
再强调一下，memcached是一个用来存储常用信息的缓存，有了它，您便无需从缓慢的资源，比如磁盘或数据库，加载并处理信息了。
To reiterate, memcached is a cache for storing frequently used information to save you from loading and processing information from slower sources, such as disks or a database.
许多大型站点都使用memcached在分布式内存系统中缓存各种对象，这样就不需要从磁盘或数据库读取它们。
Memcached is used by many large sites to cache various objects in a distributed memory system, rather than having to read from disk or a database.
这些资源包括物理数据库的磁盘资源、网络资源和数据库服务器资源。
These resources include the disk resources of the physical database, the network resources, and the database server resources.
最后，磁盘访问速度影响数据库连接的数量和打开数据库和视图的速度。
Finally, disk access speed impacts the number of database connections and the speed of database and view openings.
两个磁盘用于消息传递数据库的事务日志，同样，这两个磁盘应该采用上述带状设置。
Two disks for the transaction log of the messaging database, again, these two should be striped as explained above.
磁盘组件是一个或多个被分配到数据库服务器的磁盘空间单元的集合。
Disk component is a collection of one or more units of disk space assigned to the database server.
虽然文本文件占用较少的磁盘空间，但数据库为广大用户提供更高的数据安全性、更轻松的数据访问和更好的可伸缩性。
Although text files take up less disk space, databases provide greater data security, easier access to the data, and better scalability for a large number of users.
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