[rrd-users] populate RRD with old data

[Vargas, Miguel]

I have a database with two years of 15min router interface utilization data.
I would like to get this data into RRD so I can graph it MRTG style, i.e.
daily, weekly, monthly, yearly.  

I created RRAs like this:
rrdtool create $ifname.rrd --start 1009861200 --step 900 
DS:In:GAUGE:3600:U:U 
DS:Out:GAUGE:3600:U:U 
RRA:AVERAGE:0.5:1:128 
RRA:AVERAGE:0.5:2:432 
RRA:AVERAGE:0.5:8:420 
RRA:AVERAGE:0.5:96:390 
RRA:MAX:0.5:1:128 
RRA:MAX:0.5:2:432 
RRA:MAX:0.5:8:420 
RRA:MAX:0.5:96:390

My question is, how do I populate my RRAs with the old data?  If I do a
rrdtool update with a time stamp from a year ago, will it go into the
correct RRA?

TIA
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