Raid 0 and Sata III

Jonathan90 · 14-12-2013, 13:48

Hey guys im a little confused does the setup saturate the one sata III ie am i limited to 6 gigabit or will it be maximized at say 12 gigabit 2 seperate ports. hope someone gets what i mean.

Graham M · 14-12-2013, 15:05

You will never get double the speed, but it will be an improvement possibly.

qasdfdsaq · 14-12-2013, 15:33

Quote:

Originally Posted by Jonathan90

Hey guys im a little confused does the setup saturate the one sata III ie am i limited to 6 gigabit or will it be maximized at say 12 gigabit 2 seperate ports. hope someone gets what i mean.

Depends on the RAID controller. Most early ones were limited to 5 Gbps across all ports combined.

Jonathan90 · 15-12-2013, 02:41

Just wondering is it 6gbps per port or overall i saw some benchmarks with over 1 gigabytes per sec read speed.

Just to clarify theses are ocz vectors im talking about

qasdfdsaq · 15-12-2013, 20:46

Neither.

It's the bandwidth of your RAID controller.

Matth · 15-12-2013, 23:55

SATA ports (unless you are using a port multiplexer) are independent, but a single PCI-E x2 lane offers somewhat less than one full SATA 3 channel performance.

A chipset integrated controller often has better throughput than a card (since the chipset controller is on the NB-SB transport link) - though in the case of the AMD SB850 southbridge, this link has the performance of a PCI-E x4

Of course, chipset RAID is usually CPU assisted, though for simple RAID 0, there are no parity calculations

damien c · 16-12-2013, 06:31

I have ran 2 Corsair Force 3 120Gb ssd's in Raid 0 with each drive, having a read and write speed of around 550MBp/s.

When I ran them in raid the speed in benchmarks maxed out at around the 1.1GBp/s.

I honestly though really didn't see any improvement in overall performance, and it was only the odd program that actually used that sort of speed, so I bought a 240Gb ssd and gave the 2 120Gb ssd's to my dad.

16-12-2013, 07:07

never seen the point of raid0 in the home. A second hard drive is more likely to help specially when running apps that read and write a lot of data like movie editing etc when you are much better having source and destination ofndifferent drives.

Of course mirroring is different as it gives some degree of data security

chrispuk2004 · 16-12-2013, 08:23

I too run 2 120GB SSD's in RAID0 with 1 GBps Speed and 240GB capacity. Well worth it

Jonathan90 · 17-12-2013, 15:34

that's the answered I was looking for looks like a purchase needs to be made thanks guys

idi banashapan · 17-12-2013, 20:20

Quote:

Originally Posted by chrispuk2004

I too run 2 120GB SSD's in RAID0 with 1 GBps Speed and 240GB capacity. Well worth it

ditto