Media speed

[sinsi]

Anyone know of a good accurate speed tester for HDD/USB drives?

I am getting some crappy readings (via copy/paste in Explorer) and would like some confirmation.
For example, usb2-sata adapter gives me ~15MB/s, usb3-sata is 90MB/s and a flash drive (usb2) is 3MB/s.
I have onboard raid0 setup and barely get 100MB/sec, the same as when there was a single drive.
Compare that to the external usb3 drive.

ffs I can burn a dvd quicker than writing to that flash drive...

[dedndave]

except for the raid, they sound like typical numbers to me
for raid, the cache size may not be optimal

[MichaelW]

For the disks the media rate will vary with the length of the tracks being accessed, with the highest rate at the longer outer tracks.

[dedndave]

yah - a lot of variables come into play, there
how many drives you have striped and so on
partition size - nice if you break it up a little
it may also be affected by system settings like virtual pages or amount of free space on the v-drive (usually the boot drive)

from what i have heard, on-board RAID's are not the greatest

[KeepingRealBusy]

Have you tried HDTune?

Dave.

[hutch--]

Sinsi,

RAID0 is usually knackered by the bus data transfer speed, I have set them up in the past and benchmarked them, usually on board types and they are no faster than a single drive if the single drive is up near the bus limit. I think you can get some peformnce gains with smartarse RAID cards but you mainboard may end up being the limiting factor.

[sinsi]

Hey Dave, HDTune is what I was after, cheers.
Interesting numbers, raid0 (2x1TB) average 250MB/s, 1TB sata3 average 105MB/s, 1TB usb3 average 115MB/s, (not-so-)flash drive average was 15MB/s.
Not as bad as I originally thought.

Maybe I will take the 1TB out and hook it up to usb3...

[KeepingRealBusy]

Glad to have helped.

Dave.