[IGS-DCWG-188] compression file changes ...

[Nacho Romero]

Dear all,

At the last IGS workshop at the IC+DC splinter meeting we approved the 
recommendation ...

2018-4. To coordinate DC, IC and NC so as to move away from Z 
compression for all IGS files (data and products) and into using gzip (.gz)


Please provide us comments on the following;

1) I propose that we announce this change now with the date 01 June 2019 
, and at that point we publish all the newly submitted files (data and 
products) as .gz in all IGS DCs, whether the owner submits it that way 
or not ... do you agree that DCs should enforce such a change or should 
we insist all the owners transition their own submitted files?


2) Do we change all the historical files to .gz ? This will generate 
"new files" which the myriad of sync processes (private and public) 
running between all sort of servers will cause a lot of duplications ... 
I propose we leave the old files as they are for now to avoid a lot of 
potential duplication of files in IGS and user's servers

3) are you aware of specific places were the .Z compression is 
requested? required? recommended? ... I think the site guidelines are 
generic enough, what do you think?


We have some other recommendations to discuss with you in the next few 
days, and in the next months I will organize a telecon so we can all 
agree a way forward for each one.

Please let us know your comments on this specific recommendation and I 
will collate all the discussion points for the coordination telecon. Thanks.

-- 
Best regards,
Nacho
_______________________________________________________________

Ignacio (Nacho) Romero
Aerospace Engineer, PhD
CSC Ltd @ ESA/ESOC/OPS-GN
Satellite Navigation Engineer @ ESOC Navigation Support Office
IGS Infrastructure Committee Chair
www.navigation-office.esa.int
www.canaryspaceconsulting.co.uk
_______________________________________________________________
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