What is your eSATA speed?

What is your eSATA transfer speed. Mine is around 38-40 MB/s. This figure look acceptable or no?

 

Apparently its ~320MB/s I was moving a 320MB ISO from my external drive to one of my internal drives and it literally finished in one Second.

But I actually think its more like 60~120MB/s, thats what it averages. It just depends on what controller you have, and if its 1st Gen or 2nd Gen. It also depends on the drive itself, and what kind of files you're moving, although that seems kind of slow.

 

It is whatever your hard drive transfer speed is.

 

As you seem to suspect yourself, ~320MB/s is not accurate. You measured bs there. (According to wikipedia, the maximum net read speed of SATA 3Gb/s is 250MB/s.)

I don't think so. Depends on how well the manufacturer implements the standard. Have def. seen various reviews where eSATA limited the speed to 80-90MB/s with a drive that could provide higher throughput when connected via SATA instead.

 

i got a cap of 128MB/s for esata external SSD drive(with a spec >200MB/s).

 

eSATA is supposed to have identical throughput to regular SATA though. I guess SATA I would limit the speed of some SSD's, but SATA II would be sufficient for anything out there.

 

It all depends on what you are transferring as well. If I transfer a movie folder with many large files I get around 110-120MB/s but with my music folder I get 80-90MB/s and if I transfer.. say the Adobe folder from my Program Files directory.. I'm lucky to get 10MB/s.

For what I use it for I'd say I average 70-80.

 

eSATA is identical to SATA.

I get transfer speeds of ~70-80 MBps (for a set of big files, about half that for small files) on my external WD 320 GB 3.5" 7200rpm hard drive.

 

I got about 75-80MB/sec with a 7200 80GB 8MB Seagate HD,i tought it was gonna be faster then the internal drive,nope its slower

I'm gonna put a faster 7200rpm drive in the enclosure en install my games on this drive because of the acces time/loading times...

 

eSATA = SATA

The interface is by far fast enough to handle any normal hard drive so the speed you get is the drive speed not the SATA speed.

The only way to benchmark the eSATA speed would be with a drive so fast that the interface bottlenecks like several fast SSD's in a RAID 0 Array.

 

Maximum speed is also controlled by the chipsetUsing the eSATA port on my Dell E6400 I'm getting the same speed as the internal drive (ie ~200MB/s with an SSD). However, a 3 year old ExpressCard eSATA adaptor tops out at about 40MB/s - only a bit better than USB.

John

 

Thats also not a native eSATA connection so it cant really count.

Its like asking if HDMI quality is better than VGA and then answering with "no it looks the same to me when using my VGA --> HDMI adapter"

Your point is valid that you may find some chipsets slower than others, but still I think any kind of adapter makes a comparison null. For all you know the quality of the adapter itself could have been a problem, let alone any limitations the express card interface it was running through, but yeah it was the express card slot you were benching not true eSATA.

 

It might be worth checking the specifications on that particular ExpressCard eSATA adaptor. ExpressCards can transfer their data through one of 2 different channels, an internal PCI Express or USB 2.0. It may be that that particular ExpressCard adaptor, for whatever reason, was designed to transfer over the USB 2.0 channel instead of the PCI Express.

 

it seems esata can be sata150, sata300, and sata600, depending on what you get.

 

Mine is 100mb/s your seems at 40m/s too slow.

My system is an HP DV7 w/ and USB/SATA ICY box enclosure from years ago with an 1TB Samsung disk(the cheaper 7200rpm i have found).

 

I cap 110MB/s with my Hitachi 7k500 =D

 

with my crap hard drive , max speed is 40-50MB/s... if the file is small...

 

I'm using a WD Black 640GB in a esata enclosure to install and play games on.A lot faster then the internal 500GB 5400rpm.
HDtune shows 110MB bursts with a 92MB avg 12ms ...