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Question ________________________________Response__________________________________
Site and Endpoints
What is the site name? T1-JINR
Which endpoint URLs do your archival systems expose?
How is tape storage selected for a write (choice of endpoint, specification of a spacetoken, namespace prefix). The whole storage is dedicated to single client CMS
What limits should clients respect? Only physical tape limits (all tapes)
---> Max number of outstanding requests  
---> Min/Max requests submitted at one time  
---> Min/Max bulk request size?  
Should clients back off under certain circumstances?  
---> How is this signalled to client?  
---> For which operations?  
Is it advantageous to group requests by a particular criterion (e.g. tape family, date)?  
---> What criterion?  
Can you handle priority requests? No.
---> How is this requested?  
Protocol support
Are there any unsupported or partially supported operations (e.g. pinning) ? All supported by dCache.
What timeouts do you recommend? No timeouts. Tasks beyond reasonable time are handled manually.
Do you have hardcoded or default timeouts? No timeouts
Operations and metrics
Can you provide total sum of data stored by VO in the archive to 100TB accuracy? 6300 TB
Can you provide space occupied on tapes by VO (includes deleted data, but not yet reclaimed space) to 100TB accuracy? 7190 TB
How do you allocate free tape space to VOs? The whole space to CMS VO.
What is the frequency with which you run repack operations to reclaim space on tapes after data deletion? After massive deletion.
Recommendations for clients
Recommendation 1  
---> Information required by users to follow advice  
Recommendation 2  
-- OliverKeeble - 2018-01-30
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Topic revision: r2 - 2018-03-05 - NikolayVoytishin
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