Ya finalizaron los backups, llevaron cuatro horas más a causa del load estimo, esto es lo único de dio error 'MySQL table checks':

Start Date: 2007-06-10
Start Time: 02:00AM
EnsimBackup: [STARTED]
Backup directory stucture: [VERIFIED]
MySQL table checks: [FAILED]
MySQL server restart: [SUCCESSFUL]
Appliance Backup: [SUCCESSFUL]
Resellers Backup: [SUCCESSFUL]
Sites Backup: [SUCCESSFUL]
Extra Databases Backup: [SUCCESSFUL]
End Time: 07:18AM
Elapsed Time: 5:18:58 (h:m:s)
EnsimBackup: [COMPLETED]

Gracias
Leandro Ochoa
Ixtus IPP