本文从单盘数据可靠性的分析入手，提出了磁盘数据可靠性的几个新概念。
Based on the analysis of the single disk data reliability. this paper provides new concepts of disk data reliability and presents.
reservation通过限制其他系统对磁盘的存取和写入来防止对磁盘数据的损坏。
The reservation prevents disk data corruption by restricting other systems from accessing and writing to the disks.
一个512字节的磁盘存储区，每个磁盘扇区含有两个256字节的磁盘数据块。
A 512 byte area of disk storage. Each disk sector contains two 256 byte disk data blocks.
本文介绍了磁盘存储的特点、磁盘存储数据传输技术以及常用的磁盘数据保护技术。
The paper introduced the property of disc storage, his transmission technique and common disc-data protecting technique.
仅仅实现应用程序的高可用性是不够的，我们还应该使磁盘数据高度可用，从而实现完整的高可用性。
Making application highly available is not sufficient; we should also make the disk data highly available to achieve complete high availability.
NAS设备采用一个内部操作系统，该操作系统起到了管理数据存储、语义和控制磁盘数据读写等控制作用。
The NAS device uses an internal operating system，which acts as a control mechanism for managing data storage，semantics and control for reading and writing data onto its disks.
由于安全性高、速度快、性能好等优势，硬件加密技术成为了当前保护磁盘数据的主流趋势和研究热点。
Because of high security, high speed, and good performance advantages, such as hardware-based encryption technology to protect disk data has become the mainstream of current trends and research focus.
这避免了后剪枝策略所需的高昂代价，减少了扫描磁盘数据的次数和大量的CPU时间，进一步提高了算法的效率。
This avoid high cost by using post-pruning measure which require many times for scanning disk data and amount of CPU time. So we gain a high efficiency.
磁盘上这些模式化的带电小粒子代表了计算机使用的二进制数字系统中的单个数据位。
A patterned series of these tiny charged berries on the disk represents a single bit of data in the binary number system used by computers.
苹果DOS 3.1每个磁盘条使用13个扇区的数据。
您应该很清楚，对于运行任何程序来说，最慢的操作实际上是花费在检索磁盘中数据上的时间。
It shouldn't surprise you that the slowest operation for running any program is the time actually spent on retrieving the data from disk.
熟悉RAID的人大概都想知道应该用什么设备(或控制器)来处理磁盘和数据。
Those familiar with a RAID are probably wondering what device (or controller) will be handling the disks and data.
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.
不推荐对数据磁盘使用RAID0，因为它没有容错功能。
RAID 0 is not recommended for data disks since it has no fault tolerance features.
跨多个磁盘的数据丢失：在这种情况下，不仅一个磁盘而是多个磁盘均遭遇了数据丢失。
Loss of data across multiple disks - in this instance, it is not just one disk that has encountered a loss of data but a number of disks.
不断增长的文件(比如日志文件和数据库日志)应该放在单独的磁盘上，与应用程序的磁盘和数据库分开。
Files that grow consistently, such as log files and database journals, should be on separate disks from your application's disk and database.
不仅不可能同时将多个数据块写入磁盘，而且每当进行修改时马上将每个数据块写入磁盘，也对系统性能有不利影响。
Not only is it impossible to write multiple data blocks to disk simultaneously, but writing every data block to disk when any part of it changes would be bad for system performance.
虽然磁盘上的数据没有损失，但是无法访问该磁盘。
The data on the disks is not compromised, but the disks cannot be accessed.
如果大部分数据位于磁盘，您应该如何扩展应用程序使其不用等待从较慢的磁盘中获取数据？
Given that most data lives on disk, how do you scale applications so they are not ultimately waiting on getting data to and from slow disks?
磁盘子系统将管理从高速缓存到磁盘的数据复制。
Copying the data from the cache to the disk will be managed by the disk subsystem.
当dB2从磁盘取数据时，它将数据放在一个DB2共享内存区域中。
When DB2 pulls data from disks, it places the data in a DB2 Shared memory area.
传统的RAID5系统使用来自该集中其他磁盘的数据来重建新驱动器的数据。
A traditional RAID 5 system USES data from other disks in the set to rebuild data for the new drive.
DB 2直接从磁盘读(写)lob数据。
当BLOB数据被写到数据库的时候，数据没有被缓存而是直接写到磁盘，这使得数据所在的磁盘速度变得很重要。
When BLOB data is written to a database, the data is not buffered but is written straight to disk, making the speed of the disk on which the data is located important.
磁盘上数据的状态可能不可用，因为捕获快照时，磁盘上的数据被视为处于崩溃一致状态。
The state of the data on a disk may not be useable because when the snapshot was taken the data on the disk was considered to be crash consistent.
毕竟，包含已修改数据的完整块中还可能包含未修改的(已经在磁盘上)数据。
After all, complete blocks contain modified data but may also contain unmodified (already on disk) data as well.
而且，除了不一致的事务日志，当电源崩溃时你有可能面临磁盘缓存数据的丢失。
In addition, to a corrupted journal, you also run the risk of losing drive cached data in the advent of a power failure.
也就是说，恢复到快照的磁盘上的数据与操作系统崩溃前磁盘上的数据接近。
In other words, the data on a disk that is restored to a snapshot looks like the data on a disk after an operating system crash.
个磁盘用于数据库管理系统中的BPC数据库。
Four disks for the BPC database table Spaces in the database management system.
毫无疑问，这些磁盘上的数据将被破坏。
It goes without saying that the data on these partitions will be destroyed.
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