Technical data

7.5 SCSI

7.5.5 Minimum configuration of the systems

Try to connect the SCSI drives used in the system in a different way, especially if you use sev -

eral SCSI controllers. Proceed as follows, if possible: deactivate all SCSI controllers except one.

This controller should have one SCSI channel only, if possible, and should be part of the con-

trollers listed in 3.4.3 Manufacturer information. Then connect the needed drive or drives ex-

clusively. Apart from defective drives, this strategy mostly allowed us to find a functioning con-

figuration during our tests to execute the planned job.

7.6 USB

Despite the vast support of USB controllers and storage devices (3.5 USB), there are some

rare cases where these controllers and devices do not function as expected. The following

subchapters provide you with hints and solution possibilities.

Note: Please check first of all in chapter 1.4 Edition overview whether your edition of HD-

Shredder supports USB. Otherwise, you need a higher edition of HDShredder to use USB.

7.6.1 Storage device not recognized

Mostly, there are four possible reasons why a USB storage device supported by HDShredder

(3.1 Overview) is not recognized:

• The USB storage device has been connected too late or exchanged after HDShredder has

started. USB storage devices should be connected to the computer before starting HDShred-

der (5.1 Preliminary steps).

• The USB storage device is not directly connected to the USB controller but via a hub (e.g. at

the monitor). Always connect the USB devices, you wish to use with HDShredder, directly to

the USB controller or to the computer.

• The used device is no standard-conform USB mass storage device and does therefore not

belong to the supported devices (3.5.1 Mass-Storage-Class).

• The USB storage device is defective or works faultily. You should then test its functionality by

using it with another PC or another operating system.

Note: If no USB storage device is recognized and if the above mentioned possibilities are ex-

cluded, the corresponding USB controller has probably not been recognized (7.6.3 Control-

ler not found).

7.6.2 Other device problems

Some devices, especially USB sticks, can show malfunctions in case of temperature rise or con-

tinuous operation, i.e. in case of continuous reading or writing big amounts of data. With HD-

Shredder, these problems manifest in read or write errors on the respective USB storage

device, which do not always occur at the same location but after a certain operating time.

Sometimes these hardware problems also lead to very long breaks during the deletion process,

which can be up to several minutes. When selecting the options (5.9.2 General options), de-

activate the option SharedMemory in this case. Only if the problem persists, activate addition-