How fast are your RAID arrays???

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TJM

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I just got my new RAID-0 striped array up & running.....using (4) Maxtor
DiamondMax Plus 9 (7200 rpm, 8MB cache) and SIIG ATA-133 RAID PCI card.

Using HD Tach 3.0, I'm getting about 82-85 MB/sec. transfer rates. However,
only about 45% faster than a single Maxtor drive (not like the 2X speed
increase claimed for RAID-0 arrays). I am using a 512KB stripe size.

I'd like to know what other folks are getting with their arrays. How do the
SATA RAID cards compare in transfer speed to IDE?
 
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"TJM" <tjm@nospam> wrote in message
news:C7mdnbYlOr7_yT3dRVn-hQ@comcast.com...
> I just got my new RAID-0 striped array up & running.....using (4) Maxtor
> DiamondMax Plus 9 (7200 rpm, 8MB cache) and SIIG ATA-133 RAID PCI card.
>
> Using HD Tach 3.0, I'm getting about 82-85 MB/sec. transfer rates.
However,
> only about 45% faster than a single Maxtor drive (not like the 2X speed
> increase claimed for RAID-0 arrays). I am using a 512KB stripe size.
>
> I'd like to know what other folks are getting with their arrays. How do
the
> SATA RAID cards compare in transfer speed to IDE?

What are you doing that needs that kind of transfer rate speed?
Or is this just a horsepower race?
 
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TJM

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> What are you doing that needs that kind of transfer rate speed?
> Or is this just a horsepower race?

Nothing right now.....unless 1080p desktop NLE becomes feasible in the next
couple years. I was just curious what other people are getting with their
arrays.

I am quite happy with this array. Total cost for (4) Maxtor 160s and SIIG
card was around $500....not bad for a 640GB drive that can play 10 MB/sec.
1080p HD clips with ease :)
 
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TJM wrote:

> I just got my new RAID-0 striped array up & running.....using (4) Maxtor
> DiamondMax Plus 9 (7200 rpm, 8MB cache) and SIIG ATA-133 RAID PCI card.
>
> Using HD Tach 3.0, I'm getting about 82-85 MB/sec. transfer rates. However,
> only about 45% faster than a single Maxtor drive (not like the 2X speed
> increase claimed for RAID-0 arrays). I am using a 512KB stripe size.

Who ever claimed that RAID0 arrays give 2X the speed of a single drive?


-WD


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Will Dormann wrote:

>
>
> Who ever claimed that RAID0 arrays give 2X the speed of a single drive?
>

People who don't know how they work. ;->
 
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"TJM" <tjm@nospam> wrote:

>I just got my new RAID-0 striped array up & running.....using (4) Maxtor
>DiamondMax Plus 9 (7200 rpm, 8MB cache) and SIIG ATA-133 RAID PCI card.
>
>Using HD Tach 3.0, I'm getting about 82-85 MB/sec. transfer rates.

If that is average data speed that is bloody good.

I have two RAID0 here, one is a 2x120 SATA on an Intel motherboard,
that clocked 135 MB/sec burst with an average data rate of 58 M/sec.
Same box has a 2x200 Gig RAID0 on a Promise Fastrack which clocks
around 120 M/sec on HDTach 3.0 with an average rate of 53 M/sec.

Building a 4x400 Gig SATA Raid0 in a couple of weeks in an IBM server
box, will be interesting to see what speed I can get out of that.

Interesting that HDTach wasn't able to test my other Raid which is a
striped set of 3x72 Gig Seagate SCSIs. It saw each drive as an
individual drive ...

Cheers

Kevin Gleeson
Imagine It
West Hobart
Tasmania Australia
www.imagine-it.com.au
 
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