[mrtg] RRDRowCount / RRDRowCount??

[Marcelo Balbinot]

Hi, I use mrtg with rrd to generate graphs of traffic from interfaces. I 
need to store all collections every 5 minutes for 1 year, without loss 
of resolution.

RRDRowCount [xx]: 105120
Does this configuration above solve my problem?
I was in doubt about other options
RRDRowCount30m, RRDRowCount2h, RRDRowCount1d
Should I configure all of them?

My main goal is to be able to view a chart from the 1st to the 30th of a 
month that has passed and can have the complete data without loss of 
resolution.

-- 
Marcelo Balbinot