Software compression should be used with software encryption for a backup job. First, Backup Exec compresses the files and then it encrypts them. However, backup jobs will take longer to complete when both software encryption and software compression are used.
Most any backup application can perform software encryption -- that is, as part of the backup process, and before the backup job is written, the data is encrypted using a module in the backup application software. Plusess: It works for any backup target (LTO-1, DAT, SDLT, disk.) MInuses: Encryption is CPU intensive, and it may slow down your backup job Since the data is encrypted when it gets to the tape drive, you will get no compression Passphrase-generated keys won't be as secure as random keys You *must* have processes to backup your encryption keys, else loss of the backup server means you've lost all your backup data. May require purchase of encryption module from backup app vendor LTO-4 and LTO-5 drives from HP all support hardware encryption. You provide the key, the drive does all the work with no loss of performance or compression. ![]() Backup Exec encrypts the following types of data: • User data, such as files and Microsoft Exchange databases. • Metadata, such as file names, attributes, and operating system information. • On-tape catalog file and directory information. ![]() Backup Exec Software Encryption And Compression Fittings ReviewsBackup Exec does not encrypt Backup Exec metadata or on-disk catalog file and directory information. You can use software compression with encryption for a backup job. First Backup Exec compresses the files, and then encrypts them. However, backup jobs take longer to complete when you use both encryption and software compression. Symantec recommends that you avoid using hardware compression with software encryption. Hardware compression is performed after encryption. Data becomes randomized during the encryption process. Backup Software With No CompressionCompression does not work effectively on data that is randomized.
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