SATA III already a bottleneck

[jaybee]

So what is on the horizon after SATA III? SSDs in raid 0 are already going to hit a bottleneck with it surely? Not that anyone "needs" more than 600MBps reads....or do they? Servers/databases requiring fast storage? Seems that we need a sata 4 already?

Thoughts?

 

[OpenToSuggestions]

Only a few Sata 3 drives are out and I am yet to see a USB 3 device for sale in the UK.

I would think Sata 3 will be mainstream for many years - Just because a hard drive in a lab supports it does not mean the public will see it anytime soon.

Look at PCIE 2, only the dual gpu cards use it. Set a 5850 to 8x instead of 16x and the performance drop is only 1-2%. Just because a bandwidth exists does not mean components will use it fully.

 

[rpstewart]

SSDs in raid 0 are already going to hit a bottleneck with it surely?

No. Each channel of the controller is independent and should (if the controller is any good) be capable of the full 6Gbps. Now whether the controller is capable of dealing with multiple channels at full tilt and pushing that data out onto the bus is another matter.

 

[jaybee]

No. Each channel of the controller is independent and should (if the controller is any good) be capable of the full 6Gbps. Now whether the controller is capable of dealing with multiple channels at full tilt and pushing that data out onto the bus is another matter.

Arrrr! I did not know this. Are you sure? So even if you had 6 x SSDs in raid 0 doing 2000+ MB per second reads, it's still ok since 1 single SSD is reading at below 600 MB per second?

 

[Gundog48]

Think I will be looking to get an SSD as I am getting my SATA 3 mobo soon. But USB 3.0, what is actually going to use that other than about the 500 external disks currently on the market?

 

[pastymuncher]

Only a few Sata 3 drives are out and I am yet to see a USB 3 device for sale in the UK.

I would think Sata 3 will be mainstream for many years - Just because a hard drive in a lab supports it does not mean the public will see it anytime soon.

Look at PCIE 2, only the dual gpu cards use it. Set a 5850 to 8x instead of 16x and the performance drop is only 1-2%. Just because a bandwidth exists does not mean components will use it fully.

You can get USB 3 external hard drive caddies now.

 

[FreeStream]

Arrrr! I did not know this. Are you sure? So even if you had 6 x SSDs in raid 0 doing 2000+ MB per second reads, it's still ok since 1 single SSD is reading at below 600 MB per second?

Yes he is correct.

Each port on the controller will support 600MB/sec.

I can't remember off the top of my head what 1x PCI-E is but I'm sure SATA3 is less than it.

 

[lukext]

PCI-E 2.0 X1 is 500MB/s

from wiki:

The PCIe 2.0 standard doubles the per-lane throughput from the PCIe 1.0 standard's 250 MB/s to 500 MB/s

so that means Sata III > 1x PCI-E 2.0?