View Full Version : 2 x 640GB Seagates in Raid 0

09-10-2008, 09:42 PM
In case anyone was wondering what they can do in performance here it is:

This is using the Intel ICH10R controller and latest driver for it. Remember 1 x 640gb drive does 97.2mb read.


09-11-2008, 10:14 AM
High latency though. What's your stripe size?

09-11-2008, 11:53 AM
128 Stripe Size and the Access Time is what one drive will do.

You will see many ppl SLICE a 100GB off and get 8.9-12.2 access time with a 64 stripe size or just 64 stripe on 640gb total, but what good is that as it is only good for small file transfers and when doing larger sizes it will BE very very slow.

I transfered 46GB of data from my USB unit to my D: partition in 40 minutes, the USB drive (which the standard max is (36MB) only does 36mb transfer. This of course is standard as the USB is slower then the Main PC and even if i went to transfer back the same amount ... i will be limted to what the USB can handle.

I have 4 partitions altogether and its straight Raid 0 ... not any other volume was created as with this controller you can do a Raid 0/1 on the same volume, but there is no real benefit for this as if one drive fails your still dead in water.

Don't be fooled by those HDTACH benchmarks that are 100GB sliced although access time will no doubt be faster and read will be around 233mb-250mb and burst rate will be a crazy 3000mb, but they are using 64 stripe most of the time GOOD for the OS, but not much more and remember its is only transfer read, so again no real use.

128 stripe is the recommended size for most ppl's usage.


If you turn off AAM i think on WD drives thats why you see ppl with 12.2 ms in HDTACH over the full 640GB . so with it ON .. the Access time is 14-15ms... /ubbthreads/images/%%GRAEMLIN_URL%%/smile.gif

I am not sure about seagate yet if such an option is available (maxter had that option), but with with AAM off the WD will be louder as the same for what Maxtor was and still is.

I like these drives nice and quiet and COOL 25C temps.

09-11-2008, 02:44 PM
too bad raptors are still high in price, now that would make a definitely make a difference.IMO

09-11-2008, 03:14 PM
1 x 640GB WD drive is about the same perfromance as 1 x my seagate 640GB drive. .. Which Both out perform 1 x 74GB raptor and 1 x 150GB raptor drive and yes in RAID 0 two of these drives will still out perform 2 x Raptor drives.

Access time No doubt will be faster by a few mili-seconds on the raptor drives. Price per performance and SPACE goes to the 640GB drives.

1 x seagate 640gb on my setup = 97.2 read.

The WD 640GB = 96.2mb read in their test.
The raptor 150GB = 77.5mb read in their test.
The Raptor 74gb = 65.1mb read in their test.


09-11-2008, 03:23 PM
Here is another recent HDtach result and now a HDtune Result, access time is lower now. The fastest access time i have seen in HDtune is 14.2ms.

HDtune uses a a larger file algorithm (for basic test) in testing as opposed to HDtach which allows for 8mb or 32mb, i ran the 8mb test for HDtach like 98% ppl do.

You can run HDtach and HDtune many times and get different results and cause i am running vista. It makes it even more difficult to get 100% accuarate results.

Vista has that Built In Auto Defrag that runs in the background and it accesses the drive throught the testing and all day long you will see your HD light flickering, it mostly does its auto defrag at bootup, but will continue to do so throughout the day as files are being used and defrag is working.


For price/performance and warranty (5 years) and are Quiet, plus Run Cool .. goes to the seagate 640GB drives.