Butterfly seeking error - Unable to get disk Volume extent information-network disk

[Kian]

Dear Sir
I use Burn in test V6.0 to test the network disk.
After long run Burn in test, and it occur a error masseage "Unable to get disk Volume extent information".
In Disk test suite, I select the test mode to "Butterfly seeking".
I find out this phenonmenon is easy to duplicate.
Did anyone have this test error?!
Is this phenonmenon normal or not?!

[Ian (PassMark)]

The BurnInTest disk test's Butterfly seek mode requires access to get the disk geometry. This is not possible for a network drive. This is normal. Please choose another test mode other than Cyclic and Butterfly seeking for a network disk.

We will investigate changing this behavior in the next major version of BurnInTest (e.g. skip the Butterfy seek mode if Cyclic is selected if the disk is a network disk).

[Kian]

Dear Sir
Thanks for your replication.