1. Can we extend the memory in future (i.e. the memory slots are full already) ?

 No, they are not fully equipped. The PowerEdge R910 server has 64 RAM-slots. In the PPU M and L, 32 slots are occupied, in the PPU XL all 64 slots are occupied. But I doubt that you can mix RAM-slots with memory banks of different size, i.e. the PPU M can be extended to max. 256 GB RAM and the PPU L to 512 GB RAM. 

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2. Can  'GRIMSEL' copy the images from RAM disk to a network disk via, e.g. nfs?

Yes it can - you are free to define the target for GRIMSEL, the source is fixed to the RAM disk of the PPU. 

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3. Any limitations according to the license agreement?

 The viewer ALBULA is for free - you can use and install it on as many computers as you like. FURKA and GRIMSEL are written such that they interact with the PILATUS detector server, therefor they will run most efficient in combination with the PILATUS detector server. You can install FURKA also in other environments but GRIMSEL comes and works only in combination with the PPU. To operate FURKA at full speed, you require a valid license, which is tied to the private 10 GB/s network with the PILATUS detector server. 

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4. FURKA and GRIMSEL don't do anything

  • One of the GRIMSEL storages directories is blocking: GRIMSEL does not start up properly if one of the directories where it is supposed to write is blocking. Comment out the storage in /etc/grimsel_dectris.conf and restart GRIMSEL 
  • PPU is not connected properly to the detector server: Perform one of the rsync listing commands logged in /etc/furka_dectris.log on the command line. If everythink is set up correctly the files on the detector ramdisk should be displayed.

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