When running diag-level= mem2 or mem1 on a Sun Fire server, the following 
error may occur:

Domain-A.POST: Timeout on {/N0/SB2/P0} for timeout value 2400 seconds
Domain-A.POST: {/N0/SB2/P0} has no heartbeat
 (repeated for each processor)
Domain-A.SC: Excluded unusable, failed or disabled board: /N0/SB2

This causes the system board to be failed or disabled for the domain during 
POST. The result of which could be unnecessary replacement of system boards 
and or memory.                              

Run diag-level= max instead of mem2 or mem1 when the timeout error 
shown above has occurred.

See bugid 4424609.                              

This entry is from http://cccweb.ebay.sun.com/ccc/groups/sunfire/srdbs/

Date: 2001-05-07

Written by: Frank Cerrito, frank.cerrito@Central

Submitted by: Bob Hilliard, bob.hilliard@East