In user space, DRBD provides a set of utilities for managing replicated disks.
在用户空间，DRBD提供一组用于管理复制磁盘的实用工具。
DRBD supports two modes for Write operations called fully synchronous and asynchronous.
DRBD支持两个模式的写操作，即完全同步和完全异步。
Now, let's look at the basic operation of the DRBD prior to digging into the architecture.
现在，在深入钻研架构之前，让我们先看一下DRBD 的操作。
Now, take a look at some of the major features of DRBD, including its ability to self-heal.
现在，我们来看一下DRBD的一些主要功能，包括自我修复功能。
But rather than move data between nodes to validate, DRBD takes a much more efficient approach.
但是相比在节点之间移动数据进行验证，DRBD提供了一个更为高效的方法。
As a front end to the previously discussed utilities, drbdadm is the most commonly used to manage DRBD.
作为之前讨论的实用工具的一个前端，drbdadm是管理drbd最常用的。
DRBD supports a large number of useful options, so you can optimize it to uniquely fit your application.
DRBD提供大量有用的选项，因此您可以对其进行优化，使其只适合您的应用程序。
DRBD permits the verification of local and peer devices in an online fashion (while input/output occurs).
DRBD允许对本地和远程对等设备进行联网验证（在输入/输出发生的同时）。
To provide data integrity, DRBD calculates message integrity codes to accompany data moving between nodes.
为了提供数据的完整性，DRBD计算消息完整性代码，以随数据一起在节点之间移动。
Using the disk model, DRBD exports a special device (/dev/drbdX) that you can use just like a regular disk.
使用磁盘模式，DRBD输出一个特殊设备（/dev/drbdX），您可以像使用一个普通磁盘那样使用它。
DRBD is a great asset if you're looking to increase the availability of your data, even on commodity hardware.
如果您想要提高您数据的可用性，甚至是商业硬件上的数据，DRBD是一个极好的资产。
DRBD USES the Linux crypto application programming interface and is therefore flexible on the integrity algorithm used.
DRBD使用Linux加密应用程序编程接口，因此在完整性算法使用方面是比较灵活的。
This section describes the major features that DRBD provides, including the variety of failure models that DRBD supports.
本节将介绍DRBD提供的主要功能，包括各种DRBD支持的故障模型。
You can use the virtual disk that DRBD provides like any other disk, with the replication occurring transparently underneath.
您可以像使用其他任何磁盘那样使用DRBD提供的虚拟磁盘，其后的复制操作是透明的。
Let's begin with a quick introduction to high availability (HA) and RAID, and then explore the architecture and use of the DRBD.
让我们首先简要介绍一下高可用性(HA)和RAID，然后再研究DRBD的架构和用法。
You use the drbdsetup utility to configure the DRBD module in the Linux kernel and drbdmeta to manage DRBD's metadata structures.
您可以使用drbdsetup 在Linux内核中配置DRBD 模快，使用drbdmeta管理 DRBD元数据结构。
DRBD supports a variation on each method that provides a bit more data protection than asynchronous at a slight cost in performance.
DRBD支持每种方法的变体，这些方法比异步模式提供更多的数据保护，代价是性能略有下降。
Users access the DRBD block devices as a traditional local block device or as a storage area network or network-attached storage solution.
用户访问DRBD块设备，将其作为一个传统本地块设备，或一个存储区域网或网络附加存储解决方案。
Even better, DRBD is open source, allowing you to tailor it to your needs (but check the DRBD road map first to see whether your need is in the works).
更好的是，DRBD是开源的，允许您根据自己的需求进行调整(但是首先检查DRBD路线图，看看是否您所需要的在其计划中)。
The DRBD software provides synchronization between the primary and secondary servers for user-based Read and Write operations as well as other synchronization operations.
DRBD软件为用户读写操作提供主服务器和辅助服务器之间的同步操作，以及其他同步操。
As a virtual disk, DRBD provides a flexible model that a variety of applications can use (from file systems to other applications that can rely on a raw disk, such as a database).
作为一个虚拟磁盘，DRBD提供一个供各种应用程序使用的灵活模型(从文件系统到依赖于一个原始磁盘的其他应用程序，比如数据库)。
The Distributed Replicated Block Device (DRBD) provides a networked version of data mirroring, classified under the redundant array of independent disks (RAID) taxonomy as RAID-1.
DistributedReplicatedBlockDevice (DRBD)提供一个网络版的数据库镜像，属于冗余磁盘阵列(RAID)RAID - 1类。
To preserve bandwidth between the nodes (likely a constrained resource), DRBD doesn't move data between nodes to validate but instead moves cryptographic digests of the data (hash).
为了保护节点间的带宽（可能是一个受限资源），DRBD不需要在节点间移动数据进行验证，而是移动数据（hash）的加密摘要。
Listing 1 illustrates building a file system and mounting the DRBD for use by the host (though it omits other necessary configuration steps, which are referenced in the Resources section).
清单1描述如何构建一个文件系统和挂载DRBD供主机使用(如果忘记了其他必要的配置步骤，参考参考资料部分)。
Listing 1 illustrates building a file system and mounting the DRBD for use by the host (though it omits other necessary configuration steps, which are referenced in the Resources section).
清单1描述如何构建一个文件系统和挂载DRBD供主机使用(如果忘记了其他必要的配置步骤，参考参考资料部分)。
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