使用一个物理磁盘创建一个分区。
物理磁盘的表示，比如lun。
现在我们先来关注物理磁盘。
还可以同时创建或添加多个物理磁盘。
You can also create or add several physical disks at once with.
但不是专门的物理磁盘。
策略2：物理磁盘迁移。
图2描述了物理磁盘盘片上的实际存储位置。
Figure 2 illustrates the actual storage position on the physical disk platter.
如果一个物理磁盘报废，线性卷通常不可恢复。
If one physical disk dies, the linear volume is generally unrecoverable.
请注意此过程类似于将新的物理磁盘添加到集。
Note that this process is similar to adding a new physical disk to the set.
tps：报告每秒钟发送到物理磁盘的传输量。
TPS: Reports back the number of transfers per second issued to the physical disk.
这些物理磁盘必须分配给两个分页VIOS分区。
The physical disks must be assigned to both paging VIOS partitions.
注意：这些文件必须存放在物理磁盘上。
物理磁盘的表示，比如逻辑单元编号(LUN)。
Representations of physical disks, such as logical unit Numbers (LUNs).
图1演示了物理磁盘与实际逻辑分区之间的关联方式。
Figure 1 illustrates how the physical disk relates to the actual logical partitions.
另外，尽量避免为每个物理磁盘分配多个分页逻辑卷。
Also try not to allocate more than one paging logical volume for each physical disk.
这个软件是用来将数据备份到物理磁盘上的。
This software is for backing up your data on a physical disk.
区块是用于数据库服务器数据存储的最大物理磁盘单元。
A chunk is the largest unit of physical disk dedicated to database server data storage.
确定FS属于哪一个物理磁盘：db2cluster。
是否能够把不经常使用的文件存储在比较慢的物理磁盘上。
Can you isolate seldom-used files for storage on slower physical disks?
这样，可以在具有多个物理磁盘的同一机器上共存多个操作系统。
Thus you can have many operating systems coexisting on the same machine spanning multiple physical disks.
唯一需要关闭系统的情况是在需要添加新的物理磁盘时。
The only time you need to shut down your system is when you need to add new physical disks.
如果VG中没有足够的空间，那么首先需要添加更多的物理磁盘。
If you don't have enough space in your VG, you'll need to add additional physical disks first. To do that.
这可能是一个实现特定功能的内部协议或物理磁盘的一个传统后端。
This may be an internal protocol that implements specific features or a traditional back end to the physical disks.
收集物理磁盘支持的所有虚拟目标设备的PVID和LUNID信息。
Collect PVID and LUNID information for all the Virtual target devices backed by physical disks.
要作为共用分页空间设备使用的磁盘必须是SAN上的完整物理磁盘。
Disks that you want to use as common paging space devices must be whole physical disks located on the SAN.
结果，它一般需要大量的物理磁盘读操作来保证实现一致的低事务响应时间。
As a result, a high number of physical disk reads are usually required to ensure consistently low transaction response times.
磁盘和网络设备通常映射到机器的物理磁盘和网络设备（如图2 所示）。
The disk and network device commonly map into the machine's physical disk and network device (as shown in Figure 2).
一个重要的概念是，请确保您的数据均匀地分布在整个物理磁盘中。
One important concept is making sure that your data is evenly spread across your entire physical disk.
数据库具有独特的困难；如果可能，索引和重做日志也应该位于不同的物理磁盘。
Databases pose separate, unique challenges; so, if possible, your indexes and redo logs should also reside on separate physical disks.
再过大约五秒钟后，将从RAM磁盘执行紧急情况模块，而物理磁盘头仍停止不动。
After about five more seconds, the panic module will be executed from RAM disk while the physical disk heads are still parked.
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