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https://blog.it-kb.ru/2014/06/16/forward-proxy-squid-3-3-on-ubuntu-server-14-04-lts-part-2-prepare-separate-vhd-disk-partition-for-squid-cache-in-fdisk/
Настройка прокси сервера Squid 3.3 на Ubuntu Server 14.04 LTS. Часть 2. Настройка диска для кэша Squid