User's Manual

Chapter 9 Protect Screens
NSA-2401 User’s Guide
200
Finding Out More
See Chapter 6 on page 125 for more information on RAID.
See Section 3.7 on page 89 for backup and snapshot tutorials.
9.2 NSA Backup Screens
Use the Protect > Backup menus to create data backups to another volume, an external USB
disk drive, or a computer or another NSA over the network.
The NSA deletes old backups according to the backup job’s purge policy (see Section 9.2.2 on
page 202) before creating a new backup. If you have a backup scheduled to begin at midnight,
then at that time, the NSA deletes files according to the purge policy setting before doing the
back up. If space on the backup NSA is a concern, then configure the NSA to delete old
backups.
After purging old backups, the NSA does not check if enough space is available before backup
commences. The NSA starts transferring files and if not enough space is available, it issues a
log or alert to tell you that the backup failed (due to lack of space) and deletes any files already
transferred.
A full backup copies all files from your NSA to the backup device. It may take some time
depending on how many files you have to back up.
See also this related information:
• Snapshots Versus Backups on page 199 for a comparison of backups and snapshots.
• Section 6.9.8 on page 156 for a comparison of backups and RAID.
• Section 9.1 on page 197 for an overview of protection methods available on the NSA.
" To best protect data, back up data to another NSA or computer or an external
hard drive, and store in an off site location.
9.2.1 Backup Summary
Click the Backup link in the Navigation panel to access the Protect > Backup summary
screen. This screen shows a list of all backup jobs created and scheduled. You can also edit or
delete an existing backups or create a new one from here. Click a column’s heading cell to sort
the table entries by that column’s criteria. Click the heading cell again to reverse the sort order.