If using this data to size your own system, then for FSY files
on a RAMdisk a general indication would be to use a RAMdisk of
around 300MB such as that on PC Feenix, perhaps less if you
only take Meteosat-9 and Meteosat-8 data, and don't take
[EUMETSAT Data Channel 4] (which now may have large MODIS L1 data
files if you have requested EUMETSAT to send that data).
For a separate EUMETCast partition such as on PCs Alta, Gemini & Stamsund
for use with the new TelliCast 2.5.17 client, I recommend using
at least twice the peak size shown in the graphs above. These
days, using up to 2GB for a FAT32 partition should not eat into
your hard disk space excessively! Remember that the data flow
can be 30-50GB per day, so if processing stops for a period, you
many want to size the disk partition for the amount of data to
be collected during any processing stoppage.
One feature of the 2.5.17 client is that as the temporary files are now
on disk rather separately than in an FSY file set, when the client is
restarted the older tempeorary files from the last run are not cleared
out. Therefore I am running a scheduled task to clear out data
more than one day old on a nightly basis.
This will account for periods of up to two days with the temporary
files occupying up to two or three times their normal disk space.
This affects both a RAMdisk or hard-disk based temporary files location
on a TelliCast restart, and hard-disk based temporary files in the event
of a computer restart.
PC Hydra is a special case, as it collects much data which is not
processed, so that can amount to 12GB or more before it is deleted
automatically, using the special feature of the MSG Data Manager, Setup,
Options, File Controls, RX disk space control, Auto-clean minutes.
PCs Hydra is running the new client, but with the tmp_directory
experimentally on a RAMdisk since 2010 Nov 21. The RAMdisk is sized at
300MB (on the 3GB RAM Hydra). Hydra is running 64-bit Windows-7.
Please note that between 2010 Nov 09 and Dec 10 some 294MB of training
material was sent on a repeated daily basis, and this stayed in the
"\received\Info-Channel-2\training" directories on PCs Gemini and
Stamsund. On PC Hydra, because the unprocessed EUMETCast
\received\ files are deleted after 150 minutes (2.5 hours), there is
less visible increase in the space used on partition T:
Please see:
http://www.eumetsat.int/Home/Main/News/ProductServiceNews/801950?l=en
