As mbarns already said first witch os source you use? For BartPE it will be XP or Win Server 2003. I guess you use last one.
For HP ProLiant DL160 G6 Server series & M$ Win Server 2003
here is dl. you need.
Here is appropriate SATA RAID Controller Driver (cp010928.exe).
In drivers\SCSIAdapter create folder (for ex. HP_DL_160_G6, open cp010928.exe with WinRAR and expand it in new created folder.
If you use core BartPE next important step is to add / use post processing infCacheBuild routine. Make test build and try access your raid array.
If you're still have problems with access to the data see whether there is a "HpAHCIsr" service was launched and working. If not, make a plugin in which will only be one inf file with reg keys related to the mentioned service. You need to expand data from reall working os (M$ Win Server 2003). Just for example here is part of Avira AVP8 inf file (AVP8 plugin) where you can see the settings and start for the AVGIO service:
CODE
0x4, "ControlSet001\Enum\Root\LEGACY_AVGIO","NextInstance", 0x00000001
0x1, "ControlSet001\Enum\Root\LEGACY_AVGIO\0000","Service","avgio"
0x4, "ControlSet001\Enum\Root\LEGACY_AVGIO\0000","Legacy", 0x00000001
0x4, "ControlSet001\Enum\Root\LEGACY_AVGIO\0000","ConfigFlags", 0x00000000
0x1, "ControlSet001\Enum\Root\LEGACY_AVGIO\0000","Class","LegacyDriver"
0x1, "ControlSet001\Enum\Root\LEGACY_AVGIO\0000","ClassGUID","{8ECC055D-047F-11D1-A537-0000F8753ED1}"
0x1, "ControlSet001\Enum\Root\LEGACY_AVGIO\0000","DeviceDesc","avgio"
0x4, "ControlSet001\Enum\Root\LEGACY_AVGIO\0000","Capabilities", 0x00000000
0x4, "ControlSet001\Enum\Root\LEGACY_AVGIO\0000\Control","*NewlyCreated*", 0x00000000
0x1, "ControlSet001\Enum\Root\LEGACY_AVGIO\0000\Control","ActiveService","avgio"
0x4, "ControlSet001\Services\avgio","Type", 0x00000001
0x4, "ControlSet001\Services\avgio","Start", 0x00000003
0x4, "ControlSet001\Services\avgio","ErrorControl", 0x00000001
0x2, "ControlSet001\Services\avgio","ImagePath","\??\B:\Programs\AVP8\avgio.sys"
0x1, "ControlSet001\Services\avgio","DisplayName","avgio"
0x7, "ControlSet001\Services\avgio","DependOnService","FltMgr"
0x7, "ControlSet001\Services\avgio","DependOnGroup"
0x1, "ControlSet001\Services\avgio\Enum","0","Root\LEGACY_AVGIO\0000"
0x4, "ControlSet001\Services\avgio\Enum","Count", 0x00000001
0x4, "ControlSet001\Services\avgio\Enum","NextInstance", 0x00000001
For network controller first you need to determine witch one you have, on support page is 9 possible options. The solution is similar to the previous case just put necessary files in drivers\Net\xxx folder.
I hope this will help you.