10 August 2012

Good Write/Read/Delete rates for ATLAS at UK T1

Had a busy period for ATLASSCRATCHDISK space token at the UK Tier1.

This was in response to recovering files for a Tier 2 which had lost a disk server and wanted replacement files.

We wrote ~35TB/day in 2 days. Deleted 80TB; (240,000 files) in a day.

Data was copied out to the T2. Purely from RAL the rate looked like:
The following shows the transfers to the T2 in question (including other Source Sites but being dominated by transfers from the RAL Tier 1).

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