Which drive's the bottleneck?

krnmastersgt

Platinum Member
Jan 10, 2008
2,873
0
0
My 1.5TB Seagate Barracuda is apparently dying on me, before I run any tools I was checking through my back-ups of the drive to make sure I had roughly everything covered.

The important data is backed up, thought I had a full copy of the drive but apparently I didn't so I'm doing so right now onto a GoFlex 3TB (bought it on sale at Costco awhile ago). Problem is that the write speed is being choked to around ~25 MB/s average write speed. The 1.5TB is plugged in internally to a SATA 2 port, and the GoFlex is plugged in via USB 3.0 port.

Not sure why it's writing so slowly, I wasn't expecting huge numbers but this is pretty damn slow considering it's just large media files for the most part that are being copied over (vary in size from 120 MB to 1.3 GB a piece). Is this write speed normal or is one of the drives being unnaturally slow?

Edit: On another note, do people typically use the basic Windows file transfer, whatever it is or is there some better freeware out there for large file tranfers? I seem to get huge spikes when initially copying and then the speed just tapers off into nothingness when writing from my SSD to the GoFlex.

Edit 2: Contemplating just cracking this GoFlex open and sticking it into my system to see if the SATA -> USB 3.0 -> motherboard -> SATA is in anyway delaying the write speeds. That and if this drive is a 7200 RPM 3 TB drive, which all my Googling seems to suggest, this is also the cheapest way of getting a 3 TB internal drive o_O (which makes me think this drive is a 5400RPM :()
 
Last edited:

ShintaiDK

Lifer
Apr 22, 2012
20,378
146
106
Sounds like the GoFlex is running USB2.

Remember USB downgrades to the lowest device on the chain. And some USB pors are shared on your mobo.

5400rpm drives are far from slow compared to another HD. Specially in large file transfers.

However, all HDs are dead slow ;)
 

BrightCandle

Diamond Member
Mar 15, 2007
4,762
0
76
25MB/s is even a bit low for USB 2.0 but neitherless I suspect the costco external box doing the USB 2.0 -> SATA conversion is the most likely culprit. Even todays thoroughly rubbish hard drives achieve 100MB/s in big file copies(on small files its just under 1MB/s though).