ZyXEL NSA-220 Plus User Guide - Page 220
Backup: Step 3, Table 68
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Chapter 8 Package Management 8.10.3 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 93 Protect > Backup: Step 3 The following table describes the labels in this screen. Table 68 Protect > Backup: Step 3 LABEL Compression DESCRIPTION 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. Encryption 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. 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. Bandwidth 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. 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. 220 NSA-220 Plus User's Guide