I recently found out that OMSA4.5 only has Storage Manager option (by default), Array Manager option is "hidden". To activate it, you have to type in this command to command line:

C:\OpenManage\windows\SystemsManagement\sysmgmt.msi ENABLEAM=YES

Then you will be able to install Array Manager instead of Storage Manager. C:\OpenManage folder represents folder where you have unpacked your OMSA .exe file that you've downloaded from Dell Support Site.

安装完成后运行array manager会提示array manager server is not installed.
运行array manager 实用程序会提示不支持windows2003自带的Perc 3/Di驱动5.9.x版本，需要2.8.0.6076版本
要让array manager 运行
需要运行PE2650_PV775N_RAID_FW_WIN_A12.EXE
将Perc3/Di的firmware升级到 v2.8.1.6098
然后运行ws03a04.exe将我的电脑-硬件管理中SCSI-raid的2003自带驱动
5.9.x 替换为2.8.0.6076