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10-13-2004, 09:17 PM
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#1 |
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Member (5 bit)
Join Date: Oct 2004
Location: the burbs of northern va
Posts: 21
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raid0 or raid 0+1, faster?
i just have a pretty simple question, which is a faster operation for getting data from your drive and relaying it...today i was in my favorite computer geek store and a fellow in there said raid0 was faster...i hope hes wrong on advice from another geek that said raid0+1 was faster, cause thats what i have...sheesh...and if ya could please insert a reason as to why ones faster, nothing to complicated tho...thanks...ps..this web sites either maiking me smarter by the day or its making me more confused by the minute..lol...thanks...
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10-13-2004, 09:21 PM
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#2 |
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Member (9 bit)
Join Date: Jun 2004
Posts: 279
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RAID0 is faster
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10-13-2004, 10:30 PM
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#3 |
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Member (5 bit)
Join Date: Oct 2004
Location: the burbs of northern va
Posts: 21
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disgusted
major, couldnt you have lied..lol...i just changed it yesterday and the wife said b4 i did...leave it alone...but did i..?...nooooooo....and it cost me almost 400 to get slower..to paraphrase charley brown.." good grief " ...
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10-13-2004, 10:34 PM
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#4 |
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Member (9 bit)
Join Date: Jun 2004
Posts: 279
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hehe...RAID0 splits data over 2 drives and RADI0+1 uses 4 drives, 2 exactly the same pairs. Only 2 of them are used to read data, the others are just for backup. I am not very sure about this, but I am sure RAID0 is the fastest.
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10-13-2004, 10:54 PM
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#5 |
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Member (10 bit)
Join Date: Jul 2003
Location: Corpus Christi, Tx
Posts: 667
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For reading data off the drive I would say they are going to be about the same. A read operation should still be (in effect) Raid 0 for both drives.
A write operation may give a slight advantage to the Raid 0 because it is only writing to one array where the Raid 0+1 is basically writting to two arrays. Regardless the difference is likely academic and would only show up in a benchmark. -Spartan |
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10-14-2004, 02:13 AM
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#6 |
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Member (14 bit)
Join Date: Feb 2000
Location: Offenbach/Main (Germany)
Posts: 8,485
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None is faster than the other.
RAID 0 is for speed. RAID 1 is for safety. RAID0+1 is for both. You still have two hard drives in RAID 0, and additionally each drive gets mirrored. That is done by the RAID controller. So RAID0 and RAID0+1 have both RAID0, so can't be faster than one another. RJ
__________________
All's right with the world when your PC is working right. 
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10-14-2004, 08:29 AM
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#7 |
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Member (9 bit)
Join Date: Jun 2004
Posts: 279
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But when writing data the bandwidth will be shared.
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10-22-2004, 09:33 AM
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#8 |
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Member (4 bit)
Join Date: Mar 2004
Posts: 13
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Bandwidth is the same, as the data sets being written and read are identical. As long as you have the cash, striped and mirrored is the way to go...
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10-22-2004, 10:09 AM
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#9 |
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Red-eyed Moderator
Staff
Premium Member
Join Date: Dec 1999
Location: Regina, Saskatchewan, Canada
Posts: 17,576
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I have benchmarked that kinda setup with SCSI (not sure if IDE or SATA should be any different), and yes... you have to benchmark it to see it, but if you have a good RAID controller, RAID 0+1 is MARGINALLY faster... the reason being, data is retrieved from whichever of the two mirrored drives locates the data first.
__________________
-At Ford, quality is job #1, job #2 is making them explode. ~Norm MacDonald, SNL News -Switching to Glide..Balancing in my head..inside of me... taking the glide path instead. |
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10-22-2004, 10:23 AM
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#10 |
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Member (4 bit)
Join Date: Mar 2004
Posts: 13
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Yeah, was thinking that. But in this perfect world, in which we all have perfect PC's (I get confused otherwise) all drives are the same, and their heads are always in the same position.
Damn PC's and their illogical logic! But in seriousness, I feel that doubling your hard drive count for a tiny performance gain is not worth it. The data security is lovely, but how many of us are going to be that dimayed if we lose our data. If we were total work fiends, a good name brand box would be all we needed, and who would touch it. Isn't being hell bent on breaking your computer what it's all about??? |
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