To have an acceptable throughput you would need to use a Gigabit Ethernet
network card in your computer. If you plug DiskSense unit into a network switch,
the switch has to be rated for Gigabit speeds (as well as all other intermediate switches
between the unit and PC where Atola Insight Forensic software is installed).
Gigabit Ethernet will give you the maximum speed of about 140 Mb/s when imaging via network.
This does not affect the imaging speed when imaging onto a Target drive attached directly to the unit, in which case the imaging speed will be up to 500 MB/sec.
There are few things to check to ensure high speed connection:
- Check that your Ethernet adapter supports Gigabit Ethernet. If it
doesn't, then you would have to obtain a new Ethernet adapter that supports Gigabit Ethernet.
- If DiskSense is not directly attached to the PC but to a networking switch, then
please make sure that the switch does support Gigabit Ethernet (as well as all
other intermediate switches, if any). Ethernet adapter in the PC still must support
- A misconfigured network switch or network adapter can cause a negative impact on the speed as well.
- Verify that all intermediate network cables between the unit and the PC
are 5e category or higher (cat. 6).
- For maximum performance, DiskSense Ethernet unit should be connected
directly to the Ethernet adapter on the PC without any intermediate network switches.
There are other things that could affect transfer speeds like network
adapter drivers, motherboard drivers, antivirus software and so on. However, complying with
the rules above is enough for most cases.
To verify the network speed you can do the following:
- Launch the Atola Insight Forensic software
- Connect a good and fast hard drive to the Source port of the DiskSense unit
- Navigate to Imaging, select Imaging to File option
- In the file selection dialog enter file name null. This special file name will force Insight to skip
writing, thus target write speed will not affect the measurement. Data
is still transferred through Ethernet.
- Begin imaging
If everything is working properly, you should see speeds of 50 MB/s or higher.