Connect Sata3 drive to multiple Sata2 ports?

Kotu · 11 May 2014 at 18:53

I was wondering, if it's possible to raid multiple hard drives to gain additional speed, does this mean there might be some way to do a similar thing but backwards?

eg. have a Sata3 drive connected to 2-3 Sata2 ports where the single drive is treated like a raid array

or even to connect a Sata3 drive to 4-5 Sata1 ports and keep is running at near full speed.

Rroff · 11 May 2014 at 18:55

Never seen an interface that does that but I guess technically its not impossible. Usually its just easier to add a SATA3 PCI-e card in.

wazza300 · 11 May 2014 at 18:57

idk what you mean

but yes you can use asmany drives as you want in a raid0 array and the speed should increase with the amount of drives used

Rroff · 11 May 2014 at 19:00

He wants to essentially inverse multiplex several slower SATA connections to create one fatter pipe equivalent to a single SATA3 connection (so as to connect a single drive and get the full performance of it without being bottlenecked by a single link).

wazza300 · 11 May 2014 at 19:04

idk,you'll only ever be as fast as the sata port and the hdd I would have thought

Kotu · 11 May 2014 at 19:12

yes, but multiple sata ports could allow you to use a faster drive.

jh30uk · 11 May 2014 at 19:21

No such thing as SATA 2/3 or I/II hardware wise.

If you are asking if you can somehow connect 1x SATA 6 Gbit/s HDD to 2x SATA 3 Gbit/s ports or 4 or 5 SATA 1.5 Gbit/s Ports to get faster speed, then the answer is no.

A Mech HDD will not even use the 300MB/s SATA 3 Gbit/s can give apart from its Burst Rate so no real loss in speed.

Kotu · 11 May 2014 at 19:42

I wasn't intending it for Mechanical hard drives, I just wanted something which let me use a high speed cost effective SSD on older motherboards.

Instead of
4x 64GB SSD connected to 4x SATA 1.5 Gbit/s for a 6 Gbit/s raid array
I would use
1x 256GB SSD connected to 4x SATA 1.5 Gbit/s for a 6 Gbit/s drive

jh30uk · 11 May 2014 at 19:47

Same answer but it will effect a SSD more as they can hit faster speeds than a Mech HDD.

You cannot do that with your Mobos ports.

Even if someone simply runs out of SATA ports and need more a SATA Port Multiplier still is the speed of the Single port.

http://en.wikipedia.org/wiki/Port_multiplier