All USB-Disk copy performance tests were performed using FlexTk Version 1.7.10 on a dual-CPU Xeon server equipped with 2GB of RAM
and a Western Digital SATA 250GB hard disk. As the external USB-Disk we have used Western Digital
MyBook 250GB drive connected to a USB2 port.
Each benchmark was performed twice - the first time we copied data from the local disk to the USB disk
and the second time we copied the same data from the USB disk to the local disk. Before each benchmark
we reformatted the destination disk and rebooted the test server.
Large-Files Copy Performance
(1000 Files, 4MB each)
Madium-Sized-Files Copy Performance
(10,000 Files, 400KB each)
In order to get a better understanding of how different data sets impact the copy performance, we have used numerous 4GB
data sets including a set of 100,000 files 40KB each, a set of 10,000 files 400KB each, a set of 1,000 files 4MB each and
a set of 100 files 40MB each. In addition, we have used a 6.1GB real-life data set that included about 150,000 files with
1/3 small files, 1/3 medium-sized files and 1/3 large files.
Small-Files Copy Performance
(100,000 Files, 40KB each)
Small-Files Copy Performance
(150,000 Files, 6.1GB Total Size)
In this case the situation changes and the FlexTk's copy engine shows equal or slower performance than the built-in Windows
tools. The USB disk copy performance is generally limited by the throughput of the USB interface, which is significantly
slower that the performance of the used hard disks.
* This performance review has been prepared for information purposes only and we are strongly advice
you to make your own performance evaluations using your specific hardware components and datasets.
