What is symmask?
Question: 	How to do device masking
Question: 	How do I perform device masking?
Environment: 	EMC SW: Solutions Enabler SYMCLI
Environment: 	OS: Microsoft Windows
Environment: 	OS: UNIX
Fix: 	A device masking example is as follows from the White Paper 'Using
SYMCLI to Perform Device Masking:"

symmask -sid xxx add dev xxx -wwn 100000000c92xxxx -dir 14d -p 0

After completing masking changes, update Symmetrix director cache with the
latest VCMDB data with symmask refresh command.

NOTE: Within EMC ControlCenter, the "make active" option works the same as
"symmask refresh"

For additional information  refer to the EMC Engineering White Paper on
'Using SYMCLI to Perform Device Masking'  (H8264_SYMCLI_Dev_Mask_ldv.pdf),
found in the Document Library on Powerlink.
Notes: 	The following command lists host HBAs that have a channel to a
Symmetrix unit and generates an WWN for any HBA that does not have a WWN
assigned yet.

symmask discover hba

Symmetrix ID          : 000187000000
Device Masking Status : Success

  Identifier        Type   User-generated Name
  ----------------  -----  ---------------------------------
  200000e069800269  Fibre  Solaris/hba1
  200000e069800270  Fibre  200000e069800270/200000e069800270
Notes: 	The follow command checks the device masking database.

symmaskdb -sid xxxlist database |more

Symmetrix ID            : 000187000000

Database Type           : Type3
Last updated at         : 04:58:55 PM on Thu Feb 24,2005

Director Identification : FA-3A
Director Port           : 0

                               User-generated
Identifier        Type   Node Name        Port Name         Devices
----------------  -----  ---------------------------------  ---------
10000000c92fxxxx  Fibre  oedell-2         10000000c92f4d68  0001:000A
10000000c926xxxx Fibre  10000000c926xxxx 10000000c92xxxx  006F:0078
	
		
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