What if your RAID 0 doesn't peform like expected?

Y

Youri Carma

Gawd
Joined
Dec 3, 2006
Messages
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I noticed in my new comp config my 4x WD3200KS in Raid 0 didn't perform like on my old comp!?

HDTune_Benchmark_Intel___Raid_0_-1.png


Than I discovered that installing the RAID console in Windows is essential!

Than you have to " ENABLE VOLUME WRITE-BACK CACHE ", That's all.


Maybe can save some of you guys a headache knowing this.

InyelMatrixStorageController.jpg


HDTune_Benchmark_Intel___Raid_0_Vol.png
 
Nice array speeds.
Maybe we should get a thread going for everyones speed and array type....
 
Yeah, That a very good idea!

- What is the fastest RAID 0 performing harddisk right now?
The WD's or the Seagates?
- How well does these onboard RAID Controllers work on the diffirent mobo platforms?
How good or bad do the handle the RAID 0 config.?

Is the rule "more HD's in RAID 0 more speed" realy truth?
 
Youri Carma said:
Yeah, That a very good idea!

- What is the fastest RAID 0 performing harddisk right now?
The WD's or the Seagates?
- How well does these onboard RAID Controllers work on the diffirent mobo platforms?
How good or bad do the handle the RAID 0 config.?

Is the rule "more HD's in RAID 0 more speed" realy truth?
Click to expand...

The fastest disk would probably be the raptors
Yes the more hd's for raid 0 the better. All work together to move data, so the more the better.

From wiki

RAID 0
Striped set (minimum 2 disks) without parity. Provides improved performance and additional storage but no fault tolerance. Any disk failure destroys the array, which becomes more likely with more disks in the array. A single disk failure destroys the entire array because when data is written to a RAID 0 drive, the data is broken into fragments. The number of fragments is dictated by the number of disks in the drive. The fragments are written to their respective disks simultaneously on the same sector. This allows smaller sections of the entire chunk of data to be read off the drive in parallel, giving this type of arrangement huge bandwidth. When one sector on one of the disks fails, however, the corresponding sector on every other disk is rendered useless because part of the data is now corrupted. RAID 0 does not implement error checking so any error is unrecoverable. More disks in the array means higher bandwidth, but greater risk of data loss
 
IDD

But this problem can be easely solved by buying a for example 500 Gb external backup disk

with for example a e-sata (For speed ;-) ) connection or Gigabit Lan connection.

Now you can easely make image backups of your OS and databackup....no worries :)

Because this is not as expensive as it used to be I would recommend this solution.
 
Of course the limitations of raid 0 can be over come I have 2 external backup drives :)
 
Same deal! :)

But I was thinking more like "Fastest RAID 0 Disk" outside the noisy and expensive Raptors.

You hardly can hear my HD's running.

Diskfailure always can happen but the quality of HD's is pretty good nowadays considering the previous HD quality.

RAID = Array of Inexpensive Disks (That's what it used to say) ;)
 
I'll try this when I get home, I'll post my benchmark results before and after. Using 2x Seagate 7200.10 320gb drives with ICHR9 southbridge.
 
So to get the true performance of raid 0 you need to install Intel's software? I just loaded the driver and installed windows. But if i install the software it will be faster?:confused:
 
Not Intel software per se, depending on the kinda mobo you have but most of the cases yes.

Indeed only with the Raid Controller software installed gives you the full performance with

your Raid Controller.
 
Youri Carma said:
Not Intel software per se, depending on the kinda mobo you have but most of the cases yes.

Indeed only with the Raid Controller software installed gives you the full performance with

your Raid Controller.
Click to expand...

Mine uses the Intel Matrix Storage Technology software. I think the controller is the ICH9R. So if i install the software then i should get better performance?
 
From reading here you need to install the matrix/intel software to be able to enable write cache.
Enabling is what increases performance.
 
Make a test with HD Tune before and after enabling the Diskcache Write-Back, like I did, and see the diffirence yourself.

http://www.hdtune.com/

Maybe make a posting here as well if you feel like it.

The software can be found on your mobo installation disk Matrix Storage Controller or something like that.

Don't forget to enable it once installed.
 
A wise word but dont let me stop the fun...

Using write back cache can cause hard drive corruption if you have a power cut as unwritten data is stored in a cache until it can be written to the drive.
Anything in the cache is lost on instant power down or system crash.

I cant help you with the probability of failure but at least you know there is a risk :)
 
Just in the last 2 weeks I took out 2 80GB and one 300GB drive from my case and popped in 2 of the new 74GB 16MB cache raptors in Raid-0 just as a games drive so if in the rare event any drive fails, it's only a matter of replacing the drive and reinstalling games. I also use it as a cache drive for Premiere. I must say games load very fast especially good loading levels in MP games, and I don't really notice any more noise although I play most games with a descent set of headphones anyway.... the games load noticeably faster than when they were installed on my single 150GB raptor...... very happy :)
 
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