Backup of EA

DIGIT backups the file-system at SASCOMP2.

The backup of the file-system for SAS Web Analytics datamart & backups takes currently between 10 and 20hrs. This also includes taking an own snapshot by zipping the whole datamart in the backup directory (currently 1 version=200gb).

A separate filesystem for the backup should be better as it this allows:
 * to keep 2 full zipped backups to make sure the backup is taken synced.
 * to make the backup service quicker as it will backup in parallel (the datamart and backup filesystem).


 * Size estimate:
 * Data Bckp as from 01.09.2010 (before needed to backup filesystem: 2 versions x (200GB + 100GB for growth)
 * Mountpoint: /ec/prod/sas/sascomp2/backup
 * Size: 600 GB
 * Ownership: saswa / (Full access)

Problems
Backup does not seem being reliable because of too many failures. Main reasons appear to be size of files (too big), and investigations are being run.

Solution

 * 1) set flag on folders which can be backup (no risk that they'll be changed, moved ...)
 * 2) reduce the volume of the data backup