RAID 0 - How much increase in speed

I don't know if anyone else has posted results like this before as I haven't read the whole thread.

2x Samsung SATA 80gb in Raid 0

Striped80gbSamsungSATA2.jpg


1x Samsung SATA 80gb

SingleSamsung80gbSATA.jpg
 
Rusty_Noob said:
I don't know if anyone else has posted results like this before as I haven't read the whole thread.
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This is one of the issues. These kind of benchmarks are only synthetic and do not reflect real-world performance in applications.

If you were to run a similar test but on game level load times for example, the difference in performance will be nothing like what you're seeing in HD Tune.

No one is disputing that synthetic benchmarks show a big improvement with RAID 0.
 
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eXor said:
Thoughts?
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You know someone has done something wrong when raid0 gives more than 100% performance boost. Because the maximum possible improvement is less than 100%. Even a ramdrive can't boot in 7 seconds, thats barely enough time to post. ;)
 
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I've noticed no improvement going to raid 0 on 2 x 250gb samsung drives. Im about to reformat and will install vista on one drive and all programs on the other. Doubt it will be any different, so is it worth the risk going raid 0?
 
MikeHunt79 said:
Surely RAID 1 is better is you want top speed? :confused:
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If you spend a lot of money on a RAID controller card then there are some out there which support split reads on RAID1 which can provide good speeds. Motherboard based RAID1 however will only read from one drive of the pair so the read speed of the array is limited to that of a single drive. Writes tend to be slower than single drive performance since the controller needs to verify that both drives have completed the write before it reports back to the OS.
 
rpstewart said:
If you spend a lot of money on a RAID controller card then there are some out there which support split reads on RAID1 which can provide good speeds. Motherboard based RAID1 however will only read from one drive of the pair so the read speed of the array is limited to that of a single drive. Writes tend to be slower than single drive performance since the controller needs to verify that both drives have completed the write before it reports back to the OS.
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I just read up on RAID1 over at wikipedia, and thought there were no downsides (faster drive + redundancy), but if the onboard controllers don't work well with it I may just leave it for now. :)
 
Im actually running benchmarks on a new HP 7800 tower on both raid0,raid1 and single drives running windows xp. Gimme a few hours and ill get the controlled results up. Im using both WD caviar RE2 250gb drives and also Raptor wd740adfd drives.
Im using both adaptec raid cards (albeit cheapo ones, the point of these tests is to prove to management that they arnt any good) and the onboard raid setup on the hp boards.
 
when i reformatted my hard drive and bought another hard drive i was considering putting them in raid0, but i had never done it before.
Eventually i decided to do it, and with just windows installed the difference was obvious, booting up took half the time as before, now i have the drives almost full (2x250gb seagates) the difference isnt as noticable but im sure on games the load/save times are definitly quicker :)
 
brendy said:
Im actually running benchmarks on a new HP 7800 tower on both raid0,raid1 and single drives running windows xp. Gimme a few hours and ill get the controlled results up. Im using both WD caviar RE2 250gb drives and also Raptor wd740adfd drives.
Im using both adaptec raid cards (albeit cheapo ones, the point of these tests is to prove to management that they arnt any good) and the onboard raid setup on the hp boards.
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If they are PCI cards then they won't be doing the RAID0 justice.

There's no question RAID0 is faster, its just not much faster when the problem isn't a case of transfering data - but finding it! (seeking)
 
hernaldo said:
If they are PCI cards then they won't be doing the RAID0 justice.

There's no question RAID0 is faster, its just not much faster when the problem isn't a case of transfering data - but finding it! (seeking)
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Tell me about it, pci ex1 isnt going to set the world on fire but it is faster already through the first run of tests so far, saying that a single raptor is coming up better than a raid0 pair of 250gb wd2500y's.
 
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