0000276: Investigate archival storage extension

  

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ID Category Severity Reproducibility Date Submitted Last Update
0000276 [TMS] minor always 29-06-10 09:04 07-03-11 13:22
Reporter Arno Schoenmakers View Status public  
Assigned To
Priority normal Resolution fixed  
Status closed  
Summary 0000276: Investigate archival storage extension
Description Suggest new hardware for archive.

See below for additional info.

A.
Additional Information Hi Josh and Arno,



Adding it all up:

Data production per half year: 1.8 TB

Extra for 2nd 10B: 0.9 TB

                                                    ------

total 2.7 TB



which is more tham the available 1.9 TB



So, we need another bit of storage.



Arno, can you make a spec of what we need?



Kind regards,

        Harm

>>> Gyula Jozsa <jozsa@astron.nl> 6/28/2010 2:57 PM >>>
Hi all,

I did not go through all proposals, since they are mostly standard ones, using the capacity equivalent of 1024 channel line observations with an integration time of 60s. There is one project, though, R10B/010, for which I calculate the following:

Setup: 1024-channel 2 pol line observation plus 6x64 4 polarisation continuum bands, integration time 10s

Since a usual (1-minute integration time) observation needs 1800 Mbyte/12h and I calculate at the moment 574 h total observing time, I get to

60s/10s * 1800 MByte*(1024+6*128)/1024 channels /12 hours*574 hours Mbyte = 900 000 MByte disk space for this project alone.

Cheers,
Josh
 
Arno Schoenmakers wrote:

WSRT archive diskspace usage since 2006 (Gbyte unless denoted differently):

  

2006: 517 + 650 + 650 + 650 + 650 + 450 = 3.6 Tbyte
2007: 214 + 650 + 650 + 650 + 650 + 527 = 3.3 Tbyte
2008: 158 + 650 + 650 + 333 = 1.8 Tbyte
2009: 340 + 650 + 650 + 650 + 33 = 2.3 Tbyte
2010: 620 + 650 + 18 = 1.3 Tbyte (up to 28-6-2010)

  

Still Available: 650 + 650 + 600 = 1.9 Tbyte

  

Should be just enough for this year. There is an additional 650 Gbyte partition but that is also used for system backups and such.

  

   Arno

  

  


  
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- Notes
(0000293)
Arno Schoenmakers
08-07-10 07:22

Delegated to Teun; he will come up with suggestions.

Note: Old archive must be transferred to new archive.

 

- Issue History
Date Modified Username Field Change
29-06-10 09:04 Arno Schoenmakers New Issue
08-07-10 07:22 Arno Schoenmakers Note Added: 0000293
08-07-10 07:22 Arno Schoenmakers Status new => progressing
07-03-11 13:22 Arno Schoenmakers Status progressing => closed
07-03-11 13:22 Arno Schoenmakers Resolution open => fixed