Here i rar-pack an iso image of ~ 2gb, locally (drive D), test it for integrity and then move it through KC_2 to an external drive (E). After that i test the archives with winrar (crc32), here is what i get:
19:06 29-Mar-09
! E:\MSBS.03.SE\NRM_E0.part03.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
19:31 29-Mar-09
! E:\MSBS.03.SE\NRM_E0.part02.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part03.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part08.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part14.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
19:59 29-Mar-09
! E:\MSBS.03.SE\NRM_E0.part05.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part07.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part08.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part11.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part13.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part16.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
00:40 30-Mar-09
! E:\MSBS.03.SE\NRM_E0.part01.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part09.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
16:16 31-Mar-09
! E:\MSBS.03.SE\NRM_E0.part02.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part10.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part13.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
18:41 31-Mar-09
! E:\MSBS.03.SE\NRM_E0.part09.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part12.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part14.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part16.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part17.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
18:48 31-Mar-09
! E:\MSBS.03.SE\NRM_E0.part03.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part16.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part17.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
19:24 31-Mar-09
! E:\MSBS.03.SE\NRM_E0.part13.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
20:08 31-Mar-09
! E:\MSBS.03.SE\NRM_E0.part03.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part13.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
20:10 31-Mar-09
! E:\MSBS.03.SE\NRM_E0.part04.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part07.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part11.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part13.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part16.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
20:23 31-Mar-09
! E:\MSBS.03.SE\NRM_E0.part02.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part03.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part05.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part16.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
00:24 01-Apr-09
! E:\MSBS.03.SE\NRM_E0.part07.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part15.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
01:27 01-Apr-09
! E:\MSBS.03.SE\NRM_E0.part02.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part09.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part16.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! E:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
As you see, i got the confirmation here about the random read errors using the KC_2. Files are sometimes correctly read and sometimes not!
OK, now copying Rars back from external disk E to local disk C, through KC_2, (as my concern is also : could i get back my data despite all this?)
results -->
00:31 01-Apr-09
! C:\MSBS.03.SE\NRM_E0.part05.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! C:\MSBS.03.SE\NRM_E0.part06.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! C:\MSBS.03.SE\NRM_E0.part07.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! C:\MSBS.03.SE\NRM_E0.part09.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! C:\MSBS.03.SE\NRM_E0.part14.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! C:\MSBS.03.SE\NRM_E0.part16.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! C:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
Copying (only crc failed rars) again to local disk C:, through KC_2,
results -->
00:35 01-Apr-09
! C:\MSBS.03.SE\NRM_E0.part06.rar: Packed data CRC failed in NRM_E0.iso. The volume is corrupt
! C:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRM_E0.iso. The file is corrupt
Now copying only crc failed rars again, from E to local disk C, through KC_2,
results -->
00:35 01-Apr-09
! C:\MSBS.03.SE\NRM_E0.part06.rar: Packed data CRC failed in NRMLFPP_EN0.iso. The volume is corrupt
! C:\MSBS.03.SE\NRM_E0.part18.rar: CRC failed in NRMLFPP_EN0.iso. The file is corrupt
we are getting better!
Now copying only crc failed rars 06 & 18 again to local disk C, through KC_2,
results -->
00:38 01-Apr-09
No errors found during test operation.
So it is now obvious that KC_2 (at least the one i own) is able to WRITE data correctly. but is not able to READ it correctly, resulting in random crc read errors. In this test he failed to read part18 (5mb) multiple times, but when i paused the overwrite process (after moving part06 (100mb), KC_2 was finally able to read it correctly. I was able then to extract all the packed data correctly, on drive C. So now to store my data to an external disk, i need it packed in rar format so to be able to test it multiple times for crc errors, until i get KC_2 to read it correctly at least once..
No need to mention that i have done these tests with a lot more data and other 3.5 IDE drives (sygate), the results are the same. KC_2 writes the data correctly but fails to do so when reading it!
I did not experience this with other brands such as some disk docking stations, and still hope scythe get this issue really fixed once forever..we really like the product for its portability, functionality and design..but we need it to be reliable.