Tom's Hardware > Forum > Storage > NAS/RAID & Technologies > Abysmal performance on 3ware 9650SE RAID5… why?

Abysmal performance on 3ware 9650SE RAID5… why?

Forum Storage : NAS/RAID & Technologies - Abysmal performance on 3ware 9650SE RAID5… why?

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yegor   09-30-2009 at 05:19:13 AM

I finally got around to installing the 3ware raid card, with 4 x 1.5TB drives, which I put in RAID5 (64KB).

As soon as I start Windows (running Windows 7 64bit) Im getting 80-100MB/s according to HD Tune, which is worse than my ICH10 RAID5 array on the mobo. But the situation gets worse over time, when the write drops to 0.1MB/s. And it copies a file at 1-2MB/s at this point.

Running torrents to the array directly locks up the client in about 15 mins of downloading.... the memory usage goes up to 1.8GB and it freezes. So the write basically drops to nothing.

Any idea whats happening here?

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Bronze Storage badge r_manic   10-13-2009 at 09:52:56 AM

The only idea that comes to mind is that drivers aren't up-to-date or even wrong, or isn't fully compatible with Windows 7 yet. Did your ICH10 array work properly on the OS?

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