Hi  Lunoffset Sets the record in the database to hold base and offset information about a skip hole in the host-visible sequence of LUN addresses. The base value is essentially the host’s first missing LUN in the skiphole. The offset is the hole size (number of addresses needed to skip over the hole). When the host asks for a LUN that is equal to, or greater than the skip hole base value, the offset is added to the LUN value requested by the host to render the actual LUN (device) in the EMC Solutions Enabler Symmetrix 174 Array Controls Version 7.0 CLI Product Guide Device Masking Symmetrix array.  For Example: for host A you mask devices 0000-0003 and 0007-0009 to Host B. Here Host B needs to see LUN 000 first, you would have to set lunoffset ON with a base value of 000 and an offset of 7.  To set Lunoffset use : symmask -sid SymmID set lunoffset on offset base -awwn awwn -dir # -p # To see the LUN ID seen by Host : symdev -sid SymmID show dev    ( Under Lun Symm and LUN HOST coulumn you can see the Lun addressed in Symm and LUN addressed  to Host.)  Regards Amita
Hi  What is lun offset in symmetrix ? how to list the lunoffset ? How it will affect the lun number seen by the host for the corresponding sym device? Because lun number looks differnt from the symmetrix to the host if the lun is offset
Lun Offset in symmetrix