Raid is pants...Look inside and help

easyrider

easyrider

easyrider

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Why is my single Samsung F1 this

samsungbenchsingle.jpg



Raid0 128kb stripe


raid128kb1.jpg
 
I'd guess the controller (Silicon Image?) is the bottleneck, the transfer speed doesn't drop from one end of the array to the other.

Are your BIOS and drivers all up to date?
 
CaptainCrash said:
I'd guess the controller (Silicon Image?) is the bottleneck, the transfer speed doesn't drop from one end of the array to the other.

Are your BIOS and drivers all up to date?
Click to expand...

Yep

Itsa PCI-E raid controller and I'm disappointed...I may as well just run desperate disks...
 
You won't get blistering performance out of a cheapo SI add-in card (PCI-E or not).

I wouldn't be too disappointed anyway - RAID 0 doesn't provide much benefit unless you like running STR benchmarks all day long. In fact, running separate disks can be an advantage in many situations (eg video editing), when you can have one as source and one as destination, so that they're reading and writing concurrently. :)
 
Tbh, i found raid 0 to be a bit underwhelming as well, i was using 2 x 74gb raptors in raid 0, the noise alone was unbearable, switched to a single 320gb sammy f1, bit of a performance drop but at least it was quiet, gonna get a 120gb ssd as my main drive, keep my steam games on a secondary drive.
 
Controlleris likely the problem. Get a decent one like an LSi Megaraid or even an Adaptec and you will notice a huge improvement. I used to use proprietry cheap controllers like VIA etc and swore by them until I started working with servers. The features, reliability, scaleability and performance when compared to the Megaraid cards is not comparable. Sure they're a bit more to buy but the throughput alone is worth the extra IMO. You can find the 8i Megaraid on that buy and sell type place for around £75 from server pulls. I have 4 in my systems now and could not go back to single drives.
 
try setting it up in complete pass through mode and using windows software raid, since thats basically what itll be doing anyway, but this way the cheapo card might not bottleneck it as much.

My cheapo card (bought purely for more sata ports at first) runs my raid 0 array and my read speeds are a tiny bit over a single drive, but the write speeds are much higher. Thats with a SiL 3132 card, not in pass through, but I should probably try that actually....
 
Ch3m1c4L said:
try setting it up in complete pass through mode and using windows software raid, since thats basically what itll be doing anyway, but this way the cheapo card might not bottleneck it as much.

My cheapo card (bought purely for more sata ports at first) runs my raid 0 array and my read speeds are a tiny bit over a single drive, but the write speeds are much higher. Thats with a SiL 3132 card, not in pass through, but I should probably try that actually....
Click to expand...



And not using the card at all?
 
This what i got from atto on my samsung f3 1tb


samsungf31tb.png


2 velociraptor in raid 0 using intel ich10

attoveloci.png


2 crucial 128gb ssds in raid 0
crucialriad.png


As you can see veloci is fast but the ssd just leave it standing

for me raid is just ...:D.was going to get rocket raid pcie card but they bit finicky and i more than happy to stay on sata 2 for now

zia
 
Not being funny that is a £10 host raid card which has rubbish performance, do you not have raid on your mainboard? I would bet Intel ICH9, ICH10 or AMD 750/850 raid would be quicker than the Sil card.
 
nightmare99 said:
Not being funny that is a £10 host raid card which has rubbish performance, do you not have raid on your mainboard? I would bet Intel ICH9, ICH10 or AMD 750/850 raid would be quicker than the Sil card.
Click to expand...

Well I have ACHI enabled for my SSD

If I cannot the drives to the mobo I can't have raid and ACHI enabled at the same time can I?
 
you can have ahci and raid enabled at the same time, depends on the controller.
Nightmare99, I know this, and I have my RAID 5 on 4 of 6 of my onboard ports, and then I have my SSD and dvd drive on the other onboard ports, could swap them over now I found out the card is bootable, but I didnt know this when I first set it up and cba to change it now lol. Should really put my proper hardware 4 port PCI-E 4x card in but Im too lazy to do that as well.
 
Well I have the option of ACHI or raid not both

If I swap to RAID from ACHI will the SSD still boot and will it be ok loading windows?

Then I can just add the two samsungs to the raid stripe...
 
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