Trying to create a 1TB database

Looking at transfer speeds to my external hard drive via esata and usb2.
My laptop doesn't support usb 3 or firewire 800


Western Digital My Book Studio Edition II 2TB Desktop External Hard Drive
2 x 1TB 7200rpm drives inside, USB 2.0, eSATA, Firewire400 & 800, RAID 0

Rotational Speed
7200 rpm

http://www.wdc.com/en/products/products.aspx?id=210

http://www.dell.com/us/enterprise/p/latitude-e6520/pd


http://superuser.com/questions/200229/how-can-i-calculate-how-much-time-it-will-take-to-transfer-10-tb-at-different-sp

https://www.google.com/search?q=10TB%2F+1000Mbps

search on google: 1TB/ 100Mbps


dd if=/dev/zero of=/run/media/pvz/4a4f8581-b326-4b06-8910-da03a7a8af68/temp bs=1M count=1024 conv=fdatasync,notrunc
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 10.2618 s, 105 MB/s


1TB/ 100MBps =
   (1 terabyte) / (100 MBps) = 2.91271111 hours


  (1 terabyte) / (100 Mbps) = 23.3016889 hours
More about calculator.


http://www.wolframalpha.com/input/?i=10+terabytes+at+60mbps

http://www.wolframalpha.com/input/?i=1+terabytes+at+105MBps

http://superuser.com/questions/9229/how-long-would-it-take-to-transfer-1tb-over-usb

http://www.calctool.org/CALC/prof/computing/transfer_time

Nice list of transfer technologies and their speeds
http://techinternets.com/copy_calc

http://www.convert-me.com/en/convert/data_transfer_rate/tebibytepday.html


Transfer and write speed using esata:

dd if=/dev/zero of=/run/media/pvz/4a4f8581-b326-4b06-8910-da03a7a8af68/temp bs=1M count=1024 conv=fdatasync,notrunc
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 10.2618 s, 105 MB/s


Transfer and write speed using usb 2:
 dd if=/dev/zero of=/run/media/pvz/4a4f8581-b326-4b06-8910-da03a7a8af68/temp bs=1M count=1024 conv=fdatasync,notrunc
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 39.7351 s, 27.0 MB/s


I am getting about Firewire 800 speeds: 800 (786.432 Mbit/s) based on http://techinternets.com/copy_calc

So between FireWire 800 and Sata 1.

Why I am I not getting Sata 2 or 3 speeds?