default cron jobs

[sparkymark]

Hi

these are the default cron jobs in my server on plesk 8.0.1.

are they all necessary or likely to interfere with other wb operations such as FTP?

15 Crontab tasks total Number of entries per page: 10 25 100
S
Min

H

DM

M

DW
Command
*/15 * * * * /usr/local/psa/admin/sbin/backupmng >/dev/null 2>&1
0 1 * * 1 /usr/local/psa/libexec/modules/watchdog/cp/secur-check
0 1 * * 1 /usr/local/psa/libexec/modules/watchdog/cp/send-report weekly
0 3 * * 7 /usr/local/psa/libexec/modules/watchdog/cp/clean-reports
10 1 * * * /usr/local/psa/libexec/modules/watchdog/cp/clean-sysstats
14 5 * * * /usr/local/psa/bin/mysqldump.sh >/dev/null 2>&1
15 1 * * * /usr/local/psa/libexec/modules/watchdog/cp/pack-sysstats day
15 1 * * 1 /usr/local/psa/libexec/modules/watchdog/cp/pack-sysstats week
15 1 1 * * /usr/local/psa/libexec/modules/watchdog/cp/pack-sysstats month
15 1 1 * * /usr/local/psa/libexec/modules/watchdog/cp/pack-sysstats year
17 7 * * * /usr/local/psa/admin/bin/php /usr/local/psa/admin/plib/report/autoreport.php --auto daily >/dev/null 2>&1
17 7 * * 1 /usr/local/psa/admin/bin/php /usr/local/psa/admin/plib/report/autoreport.php --auto weekly >/dev/null 2>&1
17 7 1 * * /usr/local/psa/admin/bin/php /usr/local/psa/admin/plib/report/autoreport.php --auto monthly >/dev/null 2>&1
20 1 * * * /usr/local/psa/libexec/modules/watchdog/cp/clean-events
7 4 * * * /usr/local/psa/admin/sbin/statistics >/dev/null 2>&1

image here: