[j-nsp] M40e route engines

[Clinton Work]

A "show chassis routing-engine" reports model as RE-3.0. I assume that 
the old name is Routing Engine 1600?

http://www.juniper.net/techpubs/software/junos/junos64/swconfig64-system-basics/html/system-basics-overview3.html#1013951

Is the best practice to remove the 128MB installation flash once a 
router goes into production? Leaving the 128MB flash in the RE0 PCMCIA 
slot gave me some problems during a JunOS upgrade last night.