Chapter 11 Packages

11.15.3 Backup: Step 3

Use this screen to specify compression, encryption and purge policies for the backup job. This step is only available if you are doing an archive backup or a synchronization backup to a remote target.

Figure 141 Protect > Backup: Step 3

The following table describes the labels in this screen.

Table 82 Protect > Backup: Step 3

LABEL

DESCRIPTION

Compression

Select Yes if you want NSA to compress the files for your backup. Otherwise, choose No.

 

In an Archive backup, compression is a method of packing computing files in a way that

 

saves hard disk space.

 

For a Synchronization backup (to a remote target), the source data will be compressed

 

before the transmission to reduce the transmission time. It is used in slow networks only.

 

 

Encryption

Select Yes if you want NSA to encrypt the files for your backup. Otherwise, choose No.

 

In an Archive backup, this means using a password to secure files.

 

For a Synchronization backup (to a remote target), this means securing the file transfer

 

session. However the final file stored on the remote NSA is unencrypted. This takes a long

 

time. Make sure you really need this feature before enabling it.

 

 

Bandwidth

Restrict the bandwidth of synchronization backups to help stop them from using all of your

 

network connection’s available bandwidth. This is more important when backing up to a

 

remote NSA or computer through the Internet.

 

 

Purge Policy

The NSA maintains the files that have been included in your backups. However to save hard

 

disk space, you can choose to delete files that have been included in previous backups.

 

• Select Keep All Old Backup files to store all files that have been included in previous

 

backups.

 

• If you want to store a certain number of backup files, select Keep Only the last n

 

backup files (1-30). Enter a value (n) from 1 to 30 to specify how many backups the

 

NSA stores. All backup files older than the last one are deleted. You will not be able to

 

recover files that existed (only) in those previous backups. Select this if backup space is

 

limited and recovery of old files is not important.

 

• If you want to store all backups for a certain time period, select Keep Backups for n

 

day(s)(1-3650). Enter a value (n) from 1 to 3650 to specify how many days the NSA

 

stores all backup files. After this day has expired, all backup files will be deleted.

 

 

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Media Server User’s Guide