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Backups take a long time
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# Internet Speed Of course if the Internet is slow, your backups will be slow. The total throughput is limited by the slowest speed between your Client and your Server. Typically download speeds are much higher than upload speeds. So, the Server’s download speed is typically several times faster than Client’s upload speed. For example, the backup from a Client with an upload speed of 256K to a Server with a download speed of 2.0 MBPS (2000K) will go at 256K, and NOT 2.0 MBPS. Remember that “average” inexpensive broadband connections have a high download speed and a slow upload speed. # Improperly Configured Firewalls Firewalls are designed to stop traffic, and they do it very well. Make sure your firewall isn’t too strict. # Too many files selected. Try using multiple Backup Sets with smaller numbers of files in each. Try being more selective in the files you back up. NEVER back up entire hard drive. No technology on this planet can back up an unreasonable number of files over the Internet. # Files are too big. It takes 2.77 hours to transmit a single gigabyte (1000 Megabytes) over a fast T1 Internet connection running at 1.53 MBPS. It takes much longer with slower Internet connections. That’s just how long it takes, and nothing can speed it up. Some files are just not good candidates for Remote Backup simply because they are too big. # The computer running the RBS Client doesn’t have enough resources. Before RBS can transmit a file to the Server, it has to compress and encrypt that file. This process requires CPU time, disk space, RAM, and swap file space - the more, the faster this process will go. If you are trying to back up a 10 gigabyte file from a Pentium 2 computer with 32 meg of RAM and a slow hard drive, it will take a long time. # Not enough bandwidth. The typical DSL Internet connection is 256K upstream. At that speed it takes over 16 hours to transmit a single gigabyte. Reduce the size of the backup or increase the Internet bandwidth. If you think your backup is too slow, verify the UPSTREAM speed from the Client. There’s where the bottleneck usually is. Typical Internet connections have a much lower UPLINK (upload) speed than their DOWNLINK (download) speed. ISPs often advertise the DOWNLINK speed and downplay the slower uplink speed. You can test your uplink speed at dslreports.com # FULL backup mode is improperly used. It isn’t necessary to back up some files. Don’t back up operating system files, swap files, or anything else that you can either rebuild or reload from a distribution CD. Don’t back up an entire hard drive by selecting the root of the drive. See also: Why does it take so long to do a backup?
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