wasbit wrote:
"Jason" wrote in message
...
In article ,
lid says...
nothing lasts forever, but the good ones should last a very long time.
unfortunately, some are not particularly good, possibly counterfeit.

A friend and former colleague is a very experienced EE who
works independently as a software and circuit designer and
also writes technical articles on computer topics for
magazines that you and I probably read (and journal
articles we probably don't...). I have asked him the same
questions about these gadgets. His response: "To a first
approximation ALL such devices on eBay are counterfeit."

Be careful. Buy them from places like Newegg or Frys.

I have a 1TB thumb drive, bought me as a present at a cost of £10 (13.5$).
Considering its price, I was dubious as to its capacity.
Windows shows it as 917GB with 489GB used & 428GB free space.
The 489GB was the most I could scrape together & took nearly a day to
write to the drive.


You can use fsutil to make a test file on your source
drive for testing. Now, watch in amazement, how
(assuming this fits on the remaining space on C: ),
the file takes no time at all to create. If you
use the 7ZIP right-click CRC32 hash calculator,
you'll be able to read this file off your C: drive
at 800MB/sec (even though the storage device might
be capable of much less).

fsutil file createnew C:\users\wasbit\Downloads\big.bin 900000000000

The source drive should be NTFS for this. Once the file is created
on the source drive, *now*, use File Explorer to copy it to
the target device, and then the real testing
will begin.

This allows crafting precisely sized test files.

The source file (big.bin) is likely "sparse" and the file
is technically filled with zeros. This doesn't
matter to the destination drive though, which
will have to do the usual amount of work (as
Windows isn't smart enough to preserve a sparse
file during copy, and expands the fake contents
as needed). Sparse files can be made very quickly.
Sparse files take the normal amount of time to copy
(copy will be limited by the destination write rate).

*******

I would be interested in the brand and model number
of this mythically large (13.5$) storage devices. Was
the brand Godzilla or Mothra ? Did it come
from the ocean ? Was it angry ?

Paul