| Bandwidth Requirements Calculator | | | |
| © 2003 Remote Backup Systems, Inc | | | |
| http://remote-backup.com | | | |
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| This calculator can help you determine how much bandwidth you will need | |
| for your Remote Backup Service. Enter the number of customers you will | |
| service, their average backup size, the average compression ratio for their |
| data types, and your peak Service Hours. | | | |
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| Number of Customers - Enter the number of active Clients you will service. | |
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| Average Backup Size - This is basically an educated guess. The "average" | |
| business client using RBackup Remote Backup sends about 150 megabytes | |
| (pre-compression) of native files per day. | | | |
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| Average Compression Ratio - RBackup compresses average business data | |
| about 75%. Word processing, accounting, and some database files | | |
| compress as much as 90%. Pictures and music compress less than 5%. | |
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| Service Hours - If your customers will send you data 24 hours a day, enter |
| 24 here. If most of them will send data between 5PM and 7AM, enter 14. This |
| number greatly effects your bandwidth requirements because the calculator | |
| figures the bandwidth needed to complete all backups within this period. | |
| For example, a 12 hour Service period will require twice the bandwidth of a |
| 24 hour Service period if the periods are fully loaded. | | |
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| The result is your Bandwidth Requirement for the DOWNLOAD speed of | |
| your Server's Internet Connection, specified in megabits per second. | |
| By using our exclusive Server Locator, many RBS Servers are operated on | |
| inexpensive Cable Modems or DSL lines. These types of connections | |
| can be bought inexpensively because their UPLOAD speed is slower than | |
| their DOWNLOAD speed. What matters most to an RBS Server is its | | |
| DOWNLOAD speed. | | | |
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| Typical DOWNLOAD Speeds in Megabits per Second | | |
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| Cable Modem | 1.0, 2.0, 3.0 | | |
| DSL | 1.0, 1.5, 2.0, 3.0, 4.0 | | |
| T1 | 1.5 | | |
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| The Calculator | | | |
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| Number of Customers | The number of Clients active on your Server. | | |
| Average Backup Size | Native backup size, in megabytes | | |
| Average Compression Ratio | RBackup compresses average business data about 75%. | | |
| Service Hours | The number of hours per day your Server is available to accept backups. | | |
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| Bandwidth Requirement (mbps) | Bandwidth Requirement, in megabits per second | | mbps |