A Linux filesystem contains files that are arranged on a disk or other block storage device in directories.
Linux文件系统包含排列在磁盘或其他区块存储设备的目录中的文件。
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。
When those storage mediums are SCSI related, the SCSI subsystem translates the common Linux block requests into SCSI requests for the particular underlying device.
若这些存储介质与SCSI相关，scsi子系统会将公共Linux块请求转化为针对特定底层设备的SCSI请求。
Rather than the host operating system needing to worry about block-to-file mapping, the storage device itself provides this mapping, allowing the host to operate at the file level.
主机操作系统不再需要考虑块到文件的映射，存储设备本身会提供这种映射，因此主机可以在文件级进行操作。
Since persistent storage is a block device, locking is controlled by the host it is assigned to (Figure 2).
因为持久性存储是一种块设备，锁定是由它指定的主机来控制的(图2)。
A disk storage device that stores data in blocks of fixed size; these blocks are addressed by block number relative to the beginning of the particular file.
一种按固定长度数据块来存储数据的磁盘存储设备，这些数据块按相对于某文件开始的块号进行寻址。
When a host wants to access a storage device on the SAN, it sends out a block-based access request for the storage device.
当主机要访问SAN存储设备，它发送一个基于块的存储设备的访问请求。
When a host wants to access a storage device on the SAN, it sends out a block-based access request for the storage device.
当主机要访问SAN存储设备，它发送一个基于块的存储设备的访问请求。
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