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Dell Studio XPS raid performance SUCKS?

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DJCheney   10-21-2009 at 08:45:34 PM

I just bought a Dell Studio XPS 435MT for use in video editing and light 3D rendering. For performance I ordered a RAID 0 striped C drive with 2 500GB drives. I added an SIIG eSATA II card and 2 external 1TB drives as source and target drives.

When I use DiskTT to check read/write/random performance:
- external drives average: 75/94/4.2 MB/sec on 1GB@32k, 24/26/1.3 on 1GB@4k
- internal RAID 0 avarage: 21/23/2.1 MB/sec on 1GB@32k, 4/5/0.6 on 1GB@4k

Huh???

ty for any suggestions!

Dave


Message edited by DJCheney on 10-22-2009 at 03:29:16 PM
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Bronze Storage badge r_manic   10-22-2009 at 11:01:57 AM

Sorry, what are you perplexed about? What the stats mean or the actual values themselves?

Message quoted 1 times
------------------------------ Desktop | E7300 | P5KPL-AM | 2GB DDR2 667MHz | NVIDIA 9500 GT | ST3320613AS | w2228h
XPS M1330 | T8300 | Dell 0U8042 | 2GB DDR2 800MHz | NVIDIA 8400M GS | WD2500BEVS-75US | 1280 x 800
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DJCheney   10-22-2009 at 03:25:35 PM

r_manic wrote :

Sorry, what are you perplexed about? What the stats mean or the actual values themselves?



er, did you look at the numbers?

the internal RAID 0 throughput is about 35% of the speed of a single external drive, when it should be about 150% or more... it seems to be operating at about 1/5th the speed I expect. This on a brand new Dell, with the RAID 0 configured at the factory. I'm wondering what could possibly be wrong. When Windows 7 arrives, perhaps I'll de-configure the raid and speed things up!


Message edited by DJCheney on 10-22-2009 at 03:30:20 PM
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Bronze Storage badge cjl   10-22-2009 at 03:48:02 PM

What benchmark are you using? Also, if this is an Intel controller, download the Intel Matrix Storage Manager and make sure the write-back cache is enabled.

------------------------------ Asus P6T deluxe
i7 965 @ 4.2GHz (200*21), 1.384V
12GB Corsair Dominator DDR3-1600 CAS 7
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DJCheney   10-23-2009 at 06:04:52 AM

DiskTT is Disk Throughput Tester... though I am open to suggestions..

http://disktt.en.softonic.com/

Dave

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