Proper EMC Symmetrix config for VMware SRM

The Fiber Channel SAN Configuration PDF file says on page 57:

The following settings are required for ESX Server operations on the Symmetrix networked storage system:

  • Common serial number (C)
  • Auto negotiation (EAN) enabled
  • Fibrepath enabled on this port (VCM)
  • SCSI 3 (SC3) set (enabled)
  • Unique world wide name (UWN)
  • SPC‐2 (Decal) (SPC2) SPC‐2 flag is required

Here is a sample output:

c:\symcfg -FA  1D -p 0 list -v

SCSI Flags
Negotiate_Reset : Disabled
Soft_Reset : Disabled
Environ_Set : Disabled
HP3000_Mode : Disabled
Common_Serial_Number : Enabled
Disable_Q_Reset_on_UA : Disabled
Sunapee(SCL) : Disabled
Siemens : Disabled
Sequent(SEQ) : Disabled
Avoid_Reset_Broadcast(ARB) : Disabled
Server_On_AS400(A4S) : Disabled
SCSI_3(SC3) : Enabled
SPC2_Protocol_Version(SPC2) : Enabled

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

Enabling SC3 and / or SPC-2 bit on a Symmetrix FA port will require a VMFS volume to be resignatured!


Check for more about that bit and also check this KB at

About PiroNet

Didier Pironet is an independent blogger and freelancer with +15 years of IT industry experience. Didier is also a former VMware inc. employee where he specialised in Datacenter and Cloud Infrastructure products as well as Infrastructure, Operations and IT Business Management products. Didier is passionate about technologies and he is found to be a creative and a visionary thinker, expressing with passion and excitement, hopefully inspiring and enrolling people to innovation and change.
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