Users Guide

Table Of Contents
Media Type Select the media type for the disk pool: Hard Disk Drives (HDD) or Solid State Disks (SSD). HDDs use traditional
rotational magnetic media for data storage and SSDs implement flash memory for data storage.
Disk Boot Size Select one of the following disk block sizes:
512 indicates that the 512 bytes block size hard drives (HDD) are selected.
4K indicates that the 4K block size hard disk drives (HDD) are selected. 4K block HDDs allow the faster data transfer with
fewer commands.
T10 Protection Information (T10 PI) Capability It is known as DIF (Data Integrity Fields) and the supporting HDDs are referred
to DIF drives. The T10 enabled HDDs validates and stores the data integrity fields for each block. It performs this action when you
write the data on the disk and return these values on a read request. When you read or write the data from the HDD, the data is
checked for the errors. Select one of the following types of T10 protection information capabilities:
All indicates that both the T10 PI capable and non-capable HDDs are selected.
T10 PI Capable indicates that only T10 PI capable HDDs are selected.
Non-T10 Capable indicates that only non-T10 capable HDDs are selected.
NOTE: PERC 9 with version 9.3.2 and above doesnt support T10 PI capabilities.
Encryption Capability Select Yes to enable encryption capability.
Encryption Protocol Select the type of encryption protocol. Select one of the following types of encryption protocol type:
TCG Enterprise SSC indicates only TCG Enterprise SSC Capable drives are selected.
TCG Opal SSC indicates only TCG Opal SSC Capable drives are selected.
Non-Encryption Capable indicates only non-encryption capable drives are selected.
Select Span Length Select the span length. The span length value refers to the number of physical disk drives included in each
span. Span length applies only to RAID 10, RAID 50, and RAID 60. The Select Span Length Setting span length is only supported
in RAID 10, RAID 50, and RAID 60. And in a RAID 10 configuration, the default value is set to 2 and the option Span Length is not
available is the storage controller supports Uneven span.
Select the physical disk-drives using the check boxes at the bottom of the screen. The physical disk-drive selection must meet the
requirements of the RAID level and span length. To select all the physical disk-drives, click Select All. After you select the option, the
option changes to Deselect.
设置虚拟磁盘属性
使用本页可指定以下虚拟驱动器属性的值:
大小 指定虚拟驱动器的大小。
条带元素大小 选择条带元素的大小。条带元素大小是条带在条带中每个物理磁盘驱动器上消耗的驱动器空间值。条带元素大
列表可能包含多余最初显示在屏幕上的选项。可使用向上箭头和向下箭头来查看所有可用的选项。
读取策略 选择读取策略:
预读 - 控制器在搜寻数据时读取虚拟驱动器的顺序扇区。如果将数据写入虚拟驱动器的顺序扇区,预读策略可以提高系统性
能。
无预读 - 控制器不使用 Read Ahead(预读)策略。如果数据是随机的并且不写入顺序扇区,无预读策略可以提高系统性能。
自适应预读 仅当最新读取请求访问磁盘驱动器的顺序扇区时控制器才启动“预读”策略。如果最新读取请求访问磁盘驱动
器的随机扇区,则控制器使用“无预读”策略。
写入策略 选择写入策略。
直写 只有在数据写入磁盘驱动器后控制器才发布写入请求完成信号。“直写”策略提供比“回写”策略更好的数据安全
性,因为系统假设数据仅在写入磁盘驱动器后才可以使用。
回写 只要数据在控制器缓存中但尚未写入磁盘驱动器时,控制器即发送写入请求完成信号。“回写”策略可以提供更高的
“写入”性能,但同时降低了数据的安全性,因为系统故障会使数据无法写入磁盘驱动器。
强制回写 - 启用写入高速缓存(不管控制器是否具有操作电池)。如果控制器没有可以工作的电池,则在电源故障时会出现
数据丢失。
磁盘高速缓存策略 选择写入策略。
已启用 控制器支持在创建虚拟磁盘时进行物理磁盘高速缓存设置。
已禁用 控制器禁止在创建虚拟磁盘时进行物理磁盘高速缓存设置。
分配可用的热备用磁盘 选择此选项以分配热备用到虚拟驱动器。热备用是用于从冗余虚拟驱动器重建数据的未用备份物理磁
盘驱动器。热备用只能用于冗余 RAID 级别。热备用还有物理磁盘驱动器大小的要求。热备用必须与虚拟驱动器中包含的最小物
理磁盘驱动器大小相同或更大。如果 RAID 级别和物理磁盘驱动器可用性不满足这些条件,则无法分配热备用。
: 仅从填充在系统的 0-3 插槽中的磁盘驱动器分配热备用。有关插槽信息,请参阅 https://www.dell.com/
poweredgemanuals 上的 PowerEdge Owner's manualPowerEdge 用户手册)。
热备用磁盘 选择将被用作热备用的磁盘。在 Lifecycle Controller 中仅支持一个专用热备用。
加密虚拟磁盘 选择此选项以使用控制器的安全密钥加密虚拟驱动器。
: 只有在创建控制器安全密钥并且选择的磁盘是自加密驱动器 (SED) 时才会创建加密虚拟驱动器。
Configure 39