take a look at this solution for appropriate flags:

emc200609

This solution says that all disks have to have the persistent bit enabled but i am not sure if cluster service validation checks all disks presented to the host or only the ones being configured as cluster resources.

emc163247

BEFORE - My Current Settings

SCSI Flags
{
Negotiate_Reset(N) : Disabled
Soft_Reset(S) : Disabled
Environ_Set(E) : Disabled
HP3000_Mode(B) : Disabled
Common_Serial_Number(C) : Enabled
Disable_Q_Reset_on_UA(D) : Disabled
Sunapee(SCL) : Disabled
Siemens(S) : Disabled
Sequent(SEQ) : Disabled
Avoid_Reset_Broadcast(ARB) : Disabled
Server_On_AS400(A4S) : Disabled
SCSI_3(SC3) : Disabled
SPC2_Protocol_Version(SPC2) : Disabled
SCSI_Support1(OS2007) : Disabled
}
Fibre Specific Flags
{
Volume_Set_Addressing(V) : Disabled
Non_Participating(NP) : Disabled
Init_Point_to_Point(PP) : Enabled
Unique_WWN(UWN) : Enabled
VCM_State(VCM) : Enabled
OpenVMS(OVMS) : Disabled
AS400(AS4) : Disabled
Auto_Negotiate(EAN) : Enabled
}


AFTER
SCSI Flags
{
Negotiate_Reset(N) : Disabled
Soft_Reset(S) : Disabled
Environ_Set(E) : Disabled
HP3000_Mode(B) : Disabled
Common_Serial_Number(C) : Enabled
Disable_Q_Reset_on_UA(D) : Disabled
Sunapee(SCL) : Disabled
Siemens(S) : Disabled
Sequent(SEQ) : Disabled
Avoid_Reset_Broadcast(ARB) : Disabled
Server_On_AS400(A4S) : Disabled
SCSI_3(SC3) : Enabled
SPC2_Protocol_Version(SPC2) : Enabled
SCSI_Support1(OS2007) : Disabled
}
Fibre Specific Flags
{
Volume_Set_Addressing(V) : Disabled
Non_Participating(NP) : Disabled
Init_Point_to_Point(PP) : Enabled
Unique_WWN(UWN) : Enabled
VCM_State(VCM) : Enabled
OpenVMS(OVMS) : Disabled
AS400(AS4) : Disabled
Auto_Negotiate(EAN) : Enabled
}

Thanks this is good stuff... If I am reading this correctly I will have to change the following two bold flags?

I also need to enable OS2007

i don't know about OS2007 flag but on my FAs that we use for Exchange 2007 (on windows 2003 servers) i have SCSI_3(SC3) enabled on the FA but SPC2 i set via hba_flag masking command since these FAs are used by other platforms and i don't want them to see this flag.

Well it looks like only hpux 11v3 (with its brand new mass storage something) and win2008 requires OS2007 flag.. However I expect that next releases of other OSes may require this flag ..

OS2007 is a brand new flag that offers compatibility with newer OSes .. Win2008, HPUX and a few other requires this flag .. Don't really remember what does it do .. but I remember it's needed by someone

Have a look at emc173498 and emc183161

Message was edited by:
Stefano Del Corno

brand new indeed ..beside win2k8 and hpux3 ..do you know what other platforms require this flag ? I looked in kb but it only mentioned these two.