Drive benchmark tool and questons.

[demingo]

So I jumped on the Dell 2x 1.5tb Seagate deal.

The drives came in today and I decided to thrown them on raid 0. Out of curiosity, I wanted to benchmark them vs the 2x 74gb raptors I use as my system drive.

Not being familiar with HDD benchmarking I grabbed Crystal Disk Mark.

The numbers I got back shocked me.

Seagate 1.5TB 7200.11 in Raid 0

Sequential Read : 254.385 MB/s
Sequential Write : 251.397 MB/s
Random Read 512KB : 49.769 MB/s
Random Write 512KB : 105.393 MB/s
Random Read 4KB : 0.661 MB/s
Random Write 4KB : 2.947 MB/s


WD Raptor 74GB in Raid 0

Sequential Read : 116.132 MB/s
Sequential Write : 111.143 MB/s
Random Read 512KB : 38.293 MB/s
Random Write 512KB : 67.147 MB/s
Random Read 4KB : 0.665 MB/s
Random Write 4KB : 2.562 MB/s


Is this benchmarks tool just plain wrong? Or are the raptor so old that the tigher platters on the 1.5tb drives simple outpace them?

 

[axan]

something is wrong with 1.5tb benchmarks seq read and write are too high, prob result of cache or something.
Grab hdtune and/or hdtach and run the benchmarks again

 

[DougLite]

Part right, part wrong. The density of the new Seagate drives should give them the edge over the Raptor in the sequential metrics. However the results suggest to me that the tests are influenced excessively by cache. As Axan suggest, try HDTune or HDTach.