rohit1986
1 Copper

Need more info about consistent_lun Switch !!

Hi All ,

While creating a IG group in VMAX , we used the switch option "consistent_lun" , kindly let me know what its purpose and suppose while creating an IG group if I forgot to add this will it make any changes .

symaccess -sid XXXX create -type initiator -name IG_Na1 -consistent_lun


Regards ,

Rohit

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ShubhamMishra
1 Nickel

Re: Need more info about consistent_lun Switch !!

-consistent_lun switch provides a static LUN ID to the device being allocated, normally if this switch is not used, VMAX allocates a LUN ID to the device which may change (dynamic lun addressing in enabled in VMAX).

Some applications require the LUN address to be consistent, then we can use the switch -consistent_lun.

Hope this helps...

Tarz31
1 Nickel

Re: Need more info about consistent_lun Switch !!

Hi,

Consistent_lun basically ensures that host lun_id's are same across the your HBA's (IG's)..

This also ensure that if you add any new paths (wwn's) to your IG's the same host lun_id'will be used for these new paths as well .

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