View file cms-master/application/language/russian/number_lang.php

<?php
$lang['terabyte_abbr'] = "Тб";
$lang['gigabyte_abbr'] = "Гб";
$lang['megabyte_abbr'] = "Мб";
$lang['kilobyte_abbr'] = "Кб";
$lang['bytes'] = "Байт";