Abstract
Tape storage is still a cost effective way to keep large amounts of data over a long period of time and it is expected that this will continue in the future. The GridKa tape environment is a complex system of many hardware components and software layers. Configuring this system for optimal performance for all use cases is a non-trivial task and requires a lot of experience. We present the current status of the GridKa tape environment, report on recent upgrades and improvements and plans to further develop and enhance the system, especially with regard to the future requirements of the HEP experiments and their large data centers. The short-term planning mainly includes the transition from TSM to HPSS as the backend and the effects on the connection of dCache and xrootd. Recent changes of the vendor situation of certain tape technologies require a precise analysis of the impact and eventual adaptation of the mid-term planning, in particular with respect to scalability challenge that comes with HL-LHC on the horizon.
Highlights
Karlsruhe Institute of Technology (KIT) is divided into several locations around Karlsruhe
The main university is located in the city centre of Karlsruhe and is called south campus
Around 10 km north of the city centre we have a second campus with many research institutions
Summary
Karlsruhe Institute of Technology (KIT) is divided into several locations around Karlsruhe. The main university is located in the city centre of Karlsruhe and is called south campus. Around 10 km north of the city centre we have a second campus with many research institutions. At this campus the Grid Computing Centre Karlsruhe (GridKa) is located. GridKa is the German Tier Centre of the Large Hardron Collider (LHC) , which is serving all four LHC experiments. At north campus we have currently in one building one IBM TS3500 library, and in our main building we have three SL8500 libraries from Oracle
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