OT: Fast USB Memory Sticks

Generally with USB drives, read speed is always way faster than write speed. It can be 2x as fast. Most of the time even the read speed will be lower that the USB standard in use.
If you were using USB 2.0 (is my guess) drives the 480mbps limit woud be at just under 43 seconds. We all know that 480 mbps is a maximum burst rate and there is no sustained rate spec, so it is bound to vary between manufacturers of USB interface cards and drives.
As you saw with your two drives your old USB drive reads a 1.18G file slightly faster than your new USB drive, but your new USB drive writes [a 1.18G file] faster than your old USB drive.
Of course you will clock 1.18GB of small files [100k-200k each] at much slower speeds for read and crawling slow for write and you may see a difference in the comparative performance of your two drives.
Lately when I have folders with GBs of small files to transfer via USB I prefer to zip them to one file, even without compression, for the convenience of a faster transfer.

Plamen
Systems Administrator
Art Display Co.


--- In vantage@yahoogroups.com, "Len Hartka" <len.hartka@...> wrote:
>
> Good Day:
>
> Off Topic: I recently read that some USB Flash Drives (memory
> sticks, thumb drive) are faster then others. It was not easy to get
> data, but we bought the ones attached and found them to be 0 to 30%
> faster - depending on where you copied to-from.
>
> Test results are below -- C is my local hard drive
> M is a network server.
> Time is mm:ss minutes:second (
> accuracy of +/- 5 seconds)
> File is an ACCESS db 1.18G
> As you can see the results are not simple. Sometimes it is faster
> and sometimes not.
>
>
>
> 4/9/10 - 1,183,952 1.18 G
>
>
>
> M to C 2:00
> ----------------------------------2:00
>
> C to M 1:55 ----------------------------------
> 1:55
>
> M to USB- fast
> 4:40---------------------------------------------------4:40 (12.5%
> faster)
>
> M to USB-old 5:20
> ------------------------------------------------------- 5:20
>
>
>
> C to USB-old
> ----------------------------------------------------3:20
>
> C to USB - Fast
> --------------------------------------- 2:20 ---------------- ( 30%
> faster)
>
> C to USB-old
> ------------------------------------------------ 3:20
>
>
>
> USB-old to C 0:55------------ 0:55
>
> USB-fast to C 1:05 ----------- 1:05 (
> slower by 20% ???)
>
>
>
> USB-fast to USB-old(E)
> ------------------------------------- 3:15 *** ***
>
> USG-old to USB-fast
> ------------------------------------2:20 *** *** ( 28 % faster)
>
>
>
> USB-fast to USB-fast 2:15
> -------------------------- 2:15 ( 30% and 3.0% faster )
>
>
>
> USB-fast to M
> 1:55-----------------------1:55 ( 0% faster)
>
> USB-old to M 1:55 ----------------------
> 1:55
>
>
>
> len.hartka@...
> Leonard C. Hartka, IT Director\ERP Manager
> Sun Automation Group
> 66 Loveton Circle
> Sparks, Md. 21152
> 410-329-3560 ext. 120
> 410-329-3564 FAX
> 443-255-7192 Work Cell
> len.hartka@...
>
> www.Sunautomation.com <http://www.sunautomation.com/>
>
> **************************************************************
>
> Sun Automation Group
>
> Celebrating
>
> 25 Years of Service
>
> to the Corrugated Industry
>
> **************************************************************
>
>
>
>
> This e-mail and any attachments may contain proprietary and/or confidential information. If you are not the intended recipient, please notify the sender immediately by reply e-mail or at 410-472-2900 and then delete the message without using, disseminating, or copying this message or any portion thereof. With e-mail communications you are urged to protect against viruses.
>
>
> [Non-text portions of this message have been removed]
>
Good Day:

Off Topic: I recently read that some USB Flash Drives (memory
sticks, thumb drive) are faster then others. It was not easy to get
data, but we bought the ones attached and found them to be 0 to 30%
faster - depending on where you copied to-from.

Test results are below -- C is my local hard drive
M is a network server.
Time is mm:ss minutes:second (
accuracy of +/- 5 seconds)
File is an ACCESS db 1.18G
As you can see the results are not simple. Sometimes it is faster
and sometimes not.



4/9/10 - 1,183,952 1.18 G



M to C 2:00
----------------------------------2:00

C to M 1:55 ----------------------------------
1:55

M to USB- fast
4:40---------------------------------------------------4:40 (12.5%
faster)

M to USB-old 5:20
------------------------------------------------------- 5:20



C to USB-old
----------------------------------------------------3:20

C to USB - Fast
--------------------------------------- 2:20 ---------------- ( 30%
faster)

C to USB-old
------------------------------------------------ 3:20



USB-old to C 0:55------------ 0:55

USB-fast to C 1:05 ----------- 1:05 (
slower by 20% ???)



USB-fast to USB-old(E)
------------------------------------- 3:15 *** ***

USG-old to USB-fast
------------------------------------2:20 *** *** ( 28 % faster)



USB-fast to USB-fast 2:15
-------------------------- 2:15 ( 30% and 3.0% faster )



USB-fast to M
1:55-----------------------1:55 ( 0% faster)

USB-old to M 1:55 ----------------------
1:55



len.hartka@...
Leonard C. Hartka, IT Director\ERP Manager
Sun Automation Group
66 Loveton Circle
Sparks, Md. 21152
410-329-3560 ext. 120
410-329-3564 FAX
443-255-7192 Work Cell
len.hartka@...

www.Sunautomation.com <http://www.sunautomation.com/>

**************************************************************

Sun Automation Group

Celebrating

25 Years of Service

to the Corrugated Industry

**************************************************************




This e-mail and any attachments may contain proprietary and/or confidential information. If you are not the intended recipient, please notify the sender immediately by reply e-mail or at 410-472-2900 and then delete the message without using, disseminating, or copying this message or any portion thereof. With e-mail communications you are urged to protect against viruses.


[Non-text portions of this message have been removed]