Dell Studio XPS raid performance SUCKS?

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
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  1. Sorry, what are you perplexed about? What the stats mean or the actual values themselves?
  2. r_manic said:
    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!
  3. 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.
  4. DiskTT is Disk Throughput Tester... though I am open to suggestions..

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

    Dave
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