SPC defines behaviors that are common to all SCSI device models.
SPC定义对所有scsi设备模型通用的行为。
Determine the vhost id of the virtual SCSI device (see Listing 5).
确定该虚拟scsi设备的vhostID(请参见清单5)。
Enter cfgdev so that the VIO Server can see the new virtual SCSI device.
输入cfgdev，以便VIOServer能够看到新的虚拟scsi设备。
Open the SCSI generic device file (such as sg1) to get the file descriptor of SCSI device.
打开SCSI通用设备文件(比如sg1)获取SCSI设备的文件描述符。
reserve : This command is issued by a host bus adapter to obtain or maintain ownership of a SCSI device.
reserve（占用） :这个命令由总线适配器发送用以获得或保留对SCSI设备的所有权。
Create the virtual target device that maps the virtual SCSI device to the logical volume (see Listing 6).
创建虚拟目标设备，用于将SCSI设备映射到逻辑卷(请参见清单6)。
Whenever a new SCSI device is attached to a system, the sd_probe function is called from the SCSI mid layer.
只要有新的SCSI设备附加到系统，SCSI中间层就会调用sd_probe函数。
Dxferp points to a memory; the data would be transferred from or to the SCSI device depending on the dxfer_direction.
dxferp指向内存；数据将根据dxfer_direction传输到SCSI设备或从中传输出来。
To find the SCSI device name for the CD/DVD ROM drive, use the lsscsi command to list all SCSI devices, and use grep to find cd/dvd
要查找CD/DVDROM驱动器的SCSI名字，可以使用lsscsi命令显示所有的 SCSI设备，并使用grep来查找 cd/dvd
The benefits of virtual SCSI devices are much the same as virtual disk; less hardware expense and not needing to dedicate a device to each partition.
虚拟scsi设备的好处与虚拟磁盘几乎相同；更少的硬件费用，不需要为每个分区专门配置设备。
This command is used to request the basic information of the SCSI device and is often used as a ping operation to test to see if the SCSI device is online.
这个命令用于请求SCSI设备的基本信息，并且常常用作ping操作，以测试scsi设备是否在线。
The real-time image signal gathered by CCD-Sensor was processed with DSP (digital signal processor), and then recorded on SCSI device by SCSI protocol.
CCD传感器采集的图像信号经数字信号处理器（DSP）实时处理，通过SCSI协议记录到高速SCSI设备上。
Release: This command is issued by the owning host bus adapter when a disk resource is taken offline; it frees a SCSI device for another host bus adapter to reserve.
release(释放)：当磁盘资源下线的时候，这个命令由拥有该磁盘的总线适配器发送。这个命令释放该SCSI设备供其他总线适配器占用。
An initiator can represent a SCSI device in a host computer, and a SCSI target can be a disk drive, CD-ROM, tape drive, or special device such as an enclosure service.
发起者可以是托管计算机中的一个SCSI设备，而SCSI目标则可以是一个磁盘、光盘和磁带设备或特殊设备(比如箱体设备)。
Stream media oriented storage systems will include subsystems as follow: file system, PCI device driver, RAID arithmetic, SCSI device driver and operation management system.
面向流媒体应用的存储系统包括几个子系统：文件系统、PCI设备驱动程序、RAID算法、SCSI驱动程序与管理控制子系统。
The SCSI commands involve data commands that are used for transferring data from or to SCSI devices and non-data commands that request or set the configure parameters of a SCSI device.
SCSI命令涉及到用于向 SCSI设备传输数据（或从中输出数据）的数据命令，以及用于设置 SCSI 设备的配置参数的非数据命令。
With these parameters, the SCSI command could be sent to the target device.
有了这些参数之后，就可以将SCSI命令发送到目标设备。
The upper level of the SCSI subsystem represents the highest-level interface from the kernel (the device level).
SCSI子系统的较高层代表的是内核（设备级）最高级别的接口。
The SCSI subsystem is one of these block device drivers.
scsi子系统是这种块设备驱动器之一。
At the top is what's called the upper level, which represents the highest interface of the kernel for SCSI and drivers for the major device types.
顶部的那层叫做较高层，代表的是内核针对SCSI和主要设备类型的驱动器的最高接口。
The following command does a full backup of Linux with all ext2 and ext3 file systems to a SCSI tape device.
下面的命令执行一个完全Linux备份，它把所有ext2和ext3文件系统备份到一个SCSI磁带设备。
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。
The first three numbers for each item refer to SCSI bus, device ID, and LUN (Logical Unit Number), respectively.
每一项的前三个数字分别指SCSI总线、设备标识和LUN（逻辑单元号，Logical Unit Number）。
We then loop, rescanning the SCSI bus (by echoing a command to a special file in the /proc pseudo-filesystem and calling devfsd) until the root device (/dev/sda1 in my case) is present.
然后我们进行循环，重新扫描SCSI总线（通过将命令回送到 /procpseudo-filesystem中的特殊文件，并调用devfsd ），直到出现根设备（我的例子中为 /dev/sda1）。
The sd_probe function determines whether the device will be managed by the SCSI disk driver and, if so, creates a new scsi_disk structure to represent it.
sd _ probe函数可决定此设备是否由scsi磁盘驱动器管理，如果是，就创建新的scsi_disk结构来表示它。
The sd_probe function determines whether the device will be managed by the SCSI disk driver and, if so, creates a new scsi_disk structure to represent it.
sd _ probe函数可决定此设备是否由scsi磁盘驱动器管理，如果是，就创建新的scsi_disk结构来表示它。
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