Thousands concurrent parallel read write accesses over tens of millions of small files is a terrible performance tuning problem for e-mail servers.
You must understand and fine tune all your infrastructure chain, following the previous articles for data storage and multipath on Debian 5.x Lenny.
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The IBM DS 8300 Data Storage Systems are multi millions dollars flexible high availability and performance SAN machines.
But you may left much of such performance and availability behind if you do not configure then correctly for Debian GNU / Linux.
See how to ask for performance data storage space on them. Or what you need to configure on them.
Read more »The Servico Federal de Processamento de Dados (SERPRO), (a US$ 1 billion annual revenue Brazilian government owned IT enterprise), announced during the Debian Day Brasil 2008 Porto Alegre that it has selected Debian GNU/Linux as the preferred distribution for its hundreds of GNU/Linux development and production servers.
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