Installing and Configuring the Director 2/64
95
Director 2/64 Installation Guide
Note:
Set the same value for R_A_TOV on all directors and edge switches in a
multi-switch fabric. If the value is not the same on all units, the fabric segments. Also,
the value for R_A_TOV must be greater than the value configured for E_D_TOV.
E_D_TOV
Adjust the E_D_TOV in tenth-of-a-second increments. An error condition occurs
when an expected response is not received within the time limit set by this value.
The default value is 20 tenths (2 seconds). Set a value between 2 tenths through
600 tenths (.2 through 60 seconds).
Note:
Set the same value for E_D_TOV on all switches and directors in a multi-switch
fabric. If the value is not the same, the fabric segments.
Switch Priority
Setting this value determines the principal director for the multi-switch fabric.
Choose Principal (highest priority), Default, or Never Principal (lowest
priority) from the Switch Priority drop-down list.
Setting these priority values determines the principal director selected for the
multi-switch fabric. For example, if you have three directors in the fabric and set
one as Principal, one as Default, and one as Never Principal, the unit set to
Principal becomes the principal director in the fabric.
If all directors are set to Principal or Default, the director with the highest
priority and the lowest WWN becomes the principal director. The following are
some examples of principal director selection when directors have these settings:
■
If you have three directors and set all to Default, the director with the lowest
WWN becomes the principal director.
■
If you have three directors and set two to Principal and one to Default, the
director with the Principal setting that has the lowest WWN becomes the
principal director.
■
If you have three directors and set two to Default and one to Never Principal,
the director with the Default setting and the lowest WWN becomes the
principal director.
