I wonder if there are users in the group with a one PC receiving/processing
system, receiving all BS and HVS-1 imaging and using a RAMDisk.
As many will know I've at last moved to TC V2.14.4 for BS and for the
reception of HVS-1 channels with 'varying degrees of success.'
MDM - MSG-4, IODC, RSS GOES-16, GOES-17, Himawari - and Animator for RSS.
AVHRR Manager, 2 X Metop Manager.
I have good BS SNR, and 'more than adequate' on HVS-1 from a 1 m dish and
Inverto Black Ultra LNB
Now, my single PC system computer - i5-4690K @ 3.5 GHz, 16 GB RAM, 64 bit
Windows 10 - appears to have slowed down since having all the extra
programmes running in regards of opening and loading data for HRPT Reader
Not a problem but one now has to wait a little longer.
I noticed since upgrading to the 'latest' TC, that my previous RAMDisk of
997 MB is not being used.
OK, I know that TC V2.14. xxx is designed to do the job of RAMDisk in temp
folders, and I see it does just that.
However, I had a look at the 'latest' EUM TD 15 yesterday and see that it
has quite a lot of information on configuration and using a RAMDisk.
Not only that, suggesting(?) the use of SSD's against HDD's, for their
Pages 34 - 35.
I know that SSD's are not in favour by some(?) but I wonder if anyone has
any comments/experience on 'still' using a RAMDisk and using SSD's in the
Others have used SSDs successfully, although I haven't here. You may like
to check the life expectancy given your expected data flow - I recall one
system reported here had three SSDs, one for each service.
My own systems are:
PC Alta: receive and process a selected set of the BAS data. 1000 MB
RAMdisk. No HVS processing or reception. 240 GB SSD system disk, two HDs. https://www.satsignal.eu/mrtg/alta-ramdisk.html
PC Stamsund: receive and process selected BAS with 1300 MB RAMdisk. Process
HVS-1 data received over the network from PC Lund. Receive but not process
HVS-2 data, it's deleted soon after reception. Two HDs. https://www.satsignal.eu/mrtg/stamsund-ramdisk.html
PC Kiruna: process selected BAS data received over the network from PC
Harstad. Receive all HVS-1 data direct to separate HD (no RAMdisk) with
selected image data processed. 256 GB SSD, three HDs. No RAMdisk
PC Harstad: receive-only selected BAS data, temp & received on 4000 MB
RAMdisk, moved to HD with Robocopy. Data fed to PC Kiruna. Single 1 TB HD. https://www.satsignal.eu/mrtg/harstad-ramdisk.html
PC Lund: receive all HVS-1 and HVS-2 data. HVS-1 data temp and received on
10 GB RAMdisk, moved as soon as possible to 4 TB HD using Robocopy, where it
is served over the network to PC Stamsund. HVS-2 data temp & received on
the same 10 GB RAMdisk, but deleted soon after reception. https://www.satsignal.eu/mrtg/lund-ramdisk-trees.html
They "just grew" like this! There's quite a lot of data I don't use, but I
want to keep receiving all the HVS-1 and HVS-2 data so that I can compare
with Arne. We both submit automated daily reports to EUMETSAT. I have
TrimTree jobs doing this, which also remove unneeded processed data (e.g.
much of the sounder data). It just grew like this.
All of the systems are capable of loss-free reception when conditions are
right. Instantaneous signal drop-outs are better handled by the TBS
systems, possibly due to a faster AGC response (I've been unable to confirm
this), the system most susceptible to missed data due to disk activity is
Stamsund, without a separate system disk. All systems running latest
Windows-10 (1903) and latest TelliCast.
Arne's system does what you want (all three services), with an 8 GB RAMdisk,
but he uses a much more complicated script. My Robocopy/TrimTree method
does the same job, as far as I understand.
Your turn, you choose!
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