Begin forwarded message:

From: L Kreczko <[log in to unmask]>

Subject: xrootd (CMS) load-balancing

Date: 16 October 2014 16:48:39 BST

To: <[log in to unmask]>

Reply-To: Testbed Support for GridPP member institutes <[log in to unmask]>

Dear experts,

A few months ago I've installed the xrootd service (xrootd4) on our
StoRM SE (lcgse02.phy.bris.ac.uk). However, the load is is becoming
very high.
Hence I would like to add our gridFTP servers to do their part.

Looking through the infinite depths of the internet I've found the
following documentation:
https://twiki.grid.iu.edu/bin/view/Storage/HadoopXrootd
http://xrootd.org/doc/prod/cms_config.htm#_Toc339484335

From which I understand that:
- I need to configure our SE with the roles 'server' and 'manager'
(or 'supervisor'?)
- each gridFTP server is configured with role 'server' with
all.manager pointing to the SE

Is it really this simple or am I missing something?
Do I need to change the storage.xml at all (I've seen RAL T1 using a
xrootd-proxy)?
What setup runs at your site?

Cheers,
Luke

--
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Dr Lukasz Kreczko +44 (0)117 928 8724
CMS Group
School of Physics
University of Bristol
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