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Performance of RAID configuration

Brand-new server with dual Intel Xeon HT processors, 2GB of RAM, configure with Raid on Mother Board (ROMB) on Ultra320 SCSI channel with 128 iTBBU cache memory hook to hot-plug SCSI cage with four (4) Ultra320 Cheetah ST373207LC disks. The RAID configuration is RAID5: 1 array with 4 stripes, 64K stripe size. The OS is Windows 2003 Standard SP1, all drivers are up to date.

Now when we copy a folder of 6GB to another folder on the same server it takes 26 minutes to complete.
Is this normal?? This is in my opinion way to slow considering the configuration.

Can someone explain to me why it is that slow (if the amount of time is normal)???


3 Solutions
I was just running an HP NetRAID 4M with 160 MB/s transfer, and to copy a file that size would have taken about 3 minutes.  So YES, it is much too long.  But remember, if the data is coming from a drive which is not on the high-speed ultra SCSI RAID 5, that will be the bottleneck, not the RAID 5 writes.  Likewise for access over the wire, and especially if from something like a USB drive.  The xfer is no faster than the slowest link.
One thought - has the raid arrays finished building?  Is write caching enabled?
Use a command line utility (you can make batch files with it for automation) when you want to copy, this is much more reliable and usually also faster. Robocopy is part of the resource kit tools.

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