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Data Transmission Rates
Delta Blocks: Optimize backups & restores
Regardless of your connection speed, nightly backups and file restores typically take just
minutes using our patented Delta Block Incremental technology that transfers only changes within the files you have changed that
day.
Duplicate File Recognition: Save time & space
In addition, our patented Duplicate File Recognition (DFR) technology prevents duplicate
files from being transferred and stored. So if you have identical files saved in multiple locations -- such as an email attachment in
your inbox and in a folder on your hard drive -- you avoid spending network time and backup space to store it each time. It also
recognizes common program and Windows system files stored at our data center to optimize your initial backups.
Initial Backup Data Transfer Rates
Your first backup transfers all your selected data to our data centers. Subsequent backups take a fraction of the
time as they transfer only daily changes. For the larger plans or slower connections, we suggest letting the initial backup run over
the weekend. You can also stop the backup at any point and let it resume later where it left off.
Estimated Internet Upload Rates (Kbps or Mbps)
Estimated initial transfer time for our backup plans at maximum capacity (*=not recommended):
Example
Connections |
Modem |
ISDN |
DSL or
partial T1 |
T1, DSL
or Cable |
T2 |
| Data Amount |
33.6K |
56K |
64K |
112-128K |
256K |
512K |
1.54M |
6.3M |
| 100 MB Backup |
3:00 |
2:00 |
2:00 |
1:00 |
0:30 |
0:15 |
0:08 |
0:02 |
| 4 GB Backup |
* |
80:00 |
70:00 |
35:00 |
18:00 |
9:00 |
3:00 |
1:00 |
| 10 GB Backup |
* |
* |
* |
* |
44:00 |
22:00 |
8:00 |
2:00 |
| 30 GB Backup |
* |
* |
* |
* |
* |
65:00 |
22:00 |
6:00 |
- These are very rough estimates and may vary by a factor of two or more depending on your ISP's actual upload speeds.
- Our backup software compresses your data about 50% before sending it to the data center. Actual compression varies
greatly by the type of file. (Zip files, video and graphics are usually already fully compressed; many text files can be compressed
up to 90%.)
- Full system backups may be faster because many common system files are already archived in our library and do not need
to be duplicated.
- Other factors may affect your transfer speeds, including your computer's operating system, processing power and
memory; traffic on the your local network, your ISP and the Internet. Your actual connection speed may vary greatly and may not be
as high as your ISP claims.
- Most of the time upload speeds are considerably slower than download speeds, especially with some
Internet connections such as cable modem and satellite.
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