For now let's concentrate on physical disks.
现在我们先来关注物理磁盘。
But they may not be dedicated physical disks.
但不是专门的物理磁盘。
Representations of physical disks, such as luns.
物理磁盘的表示，比如lun。
You can also create or add several physical disks at once with.
还可以同时创建或添加多个物理磁盘。
The physical disks must be assigned to both paging VIOS partitions.
这些物理磁盘必须分配给两个分页VIOS分区。
Can you isolate seldom-used files for storage on slower physical disks?
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。
Representations of physical disks, such as logical unit Numbers (LUNs).
物理磁盘的表示，比如逻辑单元编号(LUN)。
Sufficient physical disks not available on any supported RAID controller.
在任何受支持的RAID控制器上都没有足够的物理磁盘。
The only time you need to shut down your system is when you need to add new 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。
Collect PVID and LUNID information for all the Virtual target devices backed by 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。
Thus you can have many operating systems coexisting on the same machine spanning multiple 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。
Disks that you want to use as common paging space devices must be whole physical disks located on the SAN.
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。
If you don't have enough space in your VG, you'll need to add additional physical disks first. To do that.
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。
These statistics are useful to adapt system configuration to balance the I/O between physical disks and adapters.
对于调整系统配置以便在物理磁盘和适配器之间平衡I/O 来说，这些统计信息是非常有价值的。
This may be an internal protocol that implements specific features or a traditional back end to the physical disks.
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。
The virtual SCSI disks can be the entire physical disks, or only a portion and look like actual disks to the client partitions.
虚拟scsi磁盘可能是整个物理磁盘，也可能是其中的一部分，并且对于客户端分区来说，看起来就如同实际的磁盘。
If your data resides on only a few spindles, what is the purpose of having multiple logical unit Numbers (LUNs) or physical disks?
如果数据仅位于几个轴，那么使用多个逻辑单元号(LUN)或者物理磁盘又有什么实际意义呢？
Logical volumes are the LVM equivalent of physical disks partitions-for all practical purposes, they are physical disk partitions.
LVM中的逻辑卷就相当于物理磁盘分区；在实际使用中，它们就是物理磁盘分区。
Databases pose separate, unique challenges so, if possible, your indexes and redo logs should also reside on separate physical disks.
数据库提出了不同的、独特的要求，如果可能，您的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.
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。
If your data resides on only a few spindles, what is the point exactly of having multiple logical unit Numbers (LUNs) or physical disks?
如果您的数据仅位于几个轴，那么使用多个逻辑单元号(LUN)或者物理磁盘又有什么实际意义呢？
This initrd serves as a temporary root file system in RAM and allows the kernel to fully boot without having to mount any physical disks.
这个initrd 会作为RAM中的临时根文件系统使用，并允许内核在没有挂载任何物理磁盘的情况下完整地实现引导。
Logical volume management is a disk abstraction layer that allows you to group physical disks into a single entity called a volume group.
逻辑卷管理是一个磁盘抽象层，它可以将多个物理磁盘分组成称为卷组(volumegroup)的单一实体。
VERITAS volume Manager (VxVM) is a storage management subsystem that enables you to manage physical disks as logical devices called volumes.
veritas卷管理器(VxVM)是一个存储管理子系统，它允许您以逻辑设备(称为卷)的形式管理物理磁盘。
In our case, we're using partitions, which are only parts of physical disks, making the decisions regarding performance and reliability trickier.
在我们的例子中，我们使用的分区，只有物理磁盘的部分，根据性能和可靠性做决定。
As hard as it might sound to completely break our tether with physical media, neither the PSPGo and later versions of the PSP2 accept physical disks.
就像这听上去会完全打破我们对于物理媒介的认知一样，索尼的PSPGo和PSP2的后续版本也都不会有物理磁碟。
These virtual disks appear to the host as physical disks and they can span multiple physical volumes, which allows them to be thinly provisioned.
这些虚拟磁盘出现主机物理磁盘和他们可以跨越多个物理卷，它允许他们供应。
By using LVM, all physical disks and partitions, no matter what size and how scattered they are, can be abstracted and viewed as a single storage source.
通过使用LVM，所有物理磁盘和分区，无论它们的大小和分布方式如何，都被抽象为单一存储(single storage)源。
EVMS can see the "big picture"; it can see exactly how everything is layered, from the filesystem all the way down to the physical disks holding the data.
EVMS可以看见“总览图”；它可以确切地知道每件东西是如何分层的，从文件系统一直到底层保存数据的物理磁盘。
In some cases, for volume group redundancy on the VIO client LPARs, it can require twice as many physical disks being assigned to two different VIO servers.
在某些情况下，为了保证VIO客户机LPAR上的卷组冗余，需要给两个不同的VIO服务器分配两倍的物理磁盘。
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