• Common Serial Number (C)
• Host SCSI Compliance 2007 (OS2007)
• SCSI-3 SPC-2 Compliance (SPC2)
• SCSI-3 compliance (SC3)
• For FC Switch Base Topology (FC−SW), Enable Auto Negotiation (EAN), Point−to−Point (PP) , Unique WWN (UWN).
• For FC Loop Base Topology (FC−AL),  Enable Auto Negotiation (EAN), Unique World Wide Name (UWN)

Additionally for Windows 2008 Failover Cluster, the Persistent Reservation attribute SCSI3_persist_reserv must be enabled on each Symmetrix DMX device used.  This should NOT be done to devices for Windows 2003 clusters. EMC recommends that the SCSI3_persist_reserv attribute be only set on devices that require it.

For detailed information on changing these settings please refer to the Solutions Enabler Symmetrix Device Masking CLI Product Guide, Solutions Enabler Symmetrix Configuration Change CLI Product Guide and Solutions Enabler Symmetrix Array Controls CLI Product Guide available on Powerlink. Some SYMCLI examples are provided below.

No specific bit is required for iSCSI environment, with the following exception: VCM bit is required to enable the iSCSI initiator access login and, optionally, the iSCSI Challenge Handshake Authentication Protocol (CHAP) security configuration.

Please note, making changes globally for each director will affect all hosts connected to that port. In most instances where there are multiple types of hosts (Linux, Windows, Solaris) it may be a better option to set it per initiator.

To see the current director flag settings, run the following Solutions Enabler command:

symcfg list -sid xxxx -v -dir all

You can also set any of the director flags per host initiator. See "Setting the HBA port flags" in the Solutions Enabler Symmetrix Array Controls CLI Product Guide or see "Setting the Heterogeneous Host Configuration" in the Solutions Enabler Symmetrix Device Masking CLI Product Guide for detailed information. If the Symmetrix is running an Enginuity version earlier than 5671.68.71, 5771.104.114, or 5772.55.51 the OS2007 flag can only be enabled via a CE or symconfigure bin file change. Refer to solution emc183161 for details.

To display what director flags have been set per host initiator, run the following Solutions Enabler command.

symmaskdb -sid XXXX list database -v      (without the -v you will not see the flags)

To enable the necessary director flags for an initiator on director 4a port 0 using symmask:

symmask -sid xxxx -wwn xxxxxxxxxxxxx -dir 4a -p 0 set hba_flags on C,OS2007,SC3,SPC2 -enable

symmask refresh  (this command is required after performing the above command)

To enable the necessary director flags for an initiator group using Symaccess:

symaccess -sid xxxx -type init -name myig1 set ig_flags on C,OS2007,SC3,SPC2 -enable

To display the flags from the previous command using symmaccess:

symaccess -sid xxxx -type init show myig1 -detail

To enable the SC3, SPC2 & OS2007 flags globally on the FA 1D port 0 via symconfigure, create a text file similar to below..

set port 1d:0  SCSI_3=enable, SPC2_Protocol_Version=enable, SCSI_Support1=enable;

To show whether the Persistent Reservation attribute has been set on a Symmetrix device for Failover Cluster, run the following command:

symdev show XXXX -sid XXXX

Look for the setting "SCSI-3 Persistent Reserve" - it should be enabled.  If it is not enabled, you will need to run the following symconfigure command to enable it:

symconfigure -sid XXXX -file c:\file.txt

where file.txt has the following contents:

set device XXXX attribute=SCSI3_persist_reserv ;