(this is transcribed from a support call)

If I add another 100 meters, is the disk nog going to be too small?

the disk starts at about 60 odd % full before we log any data.

I'll have to go check. According to my last calculations, is should be ok.

Let's go check the sizes

here are all the data logs for 1 meter (about 3 months)

root@beaglebone:/usr/openhab2/MASTER/userdata/persistence/rrd4j# ls -l pnpscadawmbus_meter_76312013*
-rw-r--r-- 1 root root 35980 Mar 28 09:03 pnpscadawmbus_meter_76312013_burst.rrd
-rw-r--r-- 1 root root 35980 Mar 28 09:03 pnpscadawmbus_meter_76312013_comms.rrd
-rw-r--r-- 1 root root 35980 Mar 28 09:03 pnpscadawmbus_meter_76312013_dry.rrd
-rw-r--r-- 1 root root 35980 Mar 28 09:03 pnpscadawmbus_meter_76312013_leak.rrd
-rw-r--r-- 1 root root 35980 Mar 28 09:03 pnpscadawmbus_meter_76312013_reading.rrd
-rw-r--r-- 1 root root 35980 Mar 28 09:03 pnpscadawmbus_meter_76312013_reverse.rrd
-rw-r--r-- 1 root root 35980 Mar 28 09:03 pnpscadawmbus_meter_76312013_tamper.rrd
root@beaglebone:/usr/openhab2/MASTER/userdata/persistence/rrd4j# 

so theoretically we should be able to handle an additional 3965 meters

even if we halve that for a fudge factor

we should run out of CPU or signal reception long before we run out of disk space