Backing Up with Tape Drives: Security Is What Counts

Cost Comparison: How Many Gigabytes For Your Money?

The cheapest tape drive is not automatically the best-value archiving concept. The table gives an overview for 1 GB of data storage.

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Up To 50 GB Capacity
ManufacturerDell PowervaultOnstreamSeagateTandbergTandberg
Product110T DLT VS 80ADR2 60Sitapestor DAT 40DLT VS 80SLR100
Time to fill the media (in test lab)254 minutes163 minutes142 minutes254 minutes176 minutes
Time for 200 GByte20:49 hours17:16 hours23:27 hours20:29 hours11:33 hours
Measured transfer rate in test lab *)88%77%86%88%95%
Tape price per gigabyte$2.09$2.16$0.95$2.48$2.07
More than 50 GB Capacity
ManufacturerExaByteHPOnstreamSeagateTandberg
ProductVXA-2SDLT 320ADR2 120SiViper 200SDLT 320
Time to fill the media (in test lab)258 minutes203 minutes329 minutes154 minutes203 minutes
Time for 200 GByte10:07 hours4:09 hours17:27 hours4:51 hours4:09 hours
Measured transfer rate in test lab *)86%82%76%68%82%
Tape price per gigabyte$1.11$0.94$1.58$0.89$1.34

*) Manufacturer's specification is 100 percent.

Evaluation