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SCSI RAID vs IDE RAID performance

Last response: in Storage
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February 27, 2001 9:11:13 PM

Ok. People were asking me to do this comparison since I have both IDE RAID and SCSI RAID on my system. The results from SiSandra are not what I expected. My SCSI RAID gets lower marks than the IDE RAID (I'm assuming higher is better). Also, my drives have a 3.9 ms seek time but Sandra reports like 10 ms but the IDE is only 8.

Here are the Marks

SCSI RAID

Buffered Read : 34
Seq Read : 38
Random Read : 6
Buffered Write: 15
Seq Write : 35
Random Write : 19
Avg Seek : 10 ms

IDE RAID

Buffered Read : 69
Seq Read : 53
Random Read : 7
Buffered Write: 38
Seq Write : 36
Random Write : 9
Avg Seek : 8 ms

This is so weird and I'm not sure what's going on. I'm running Windows 2000 SP1 and you can click on the link to see my full system specs.

Anyone have any ideas on what's going on and how I can fix this?

http://www.anandtech.com/mysystemrig.html?id=1683

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The worth of your opinion is in direct proportion to the number of people who have asked for it
February 27, 2001 9:33:10 PM

Stormblade......id be VERY interested in hearing about this as well..as anyone whos been around these boards will tell you ive been debating IDE vs SCSI raid for awhile....only thing is..i think we need more info here, which drives your using, controllers, settings, MB, the whole 9 yards.

Please advise as i know i, and probably alot of others are real interested

Rama

" He who (BLEEPS) nuns, will later join the church " Joe Strummer, The Clash - "Death or Glory"
February 27, 2001 10:00:19 PM

The link I provided at the bottom is a link to my complete system configuration. Drive types, controller types, amount of memory, Operating system etc.

On the advice of a few people I've gotten rid of Sisandra. So now I'm in need of a decent benchmarking utility. Right now I grabbed a disk benchmarking utility from ATTO and the results are a bit more in line with what I was thinking.

According to these benchmarks it shows the SCSI RAID to be faster on read and writes than the IDE RAID. However, I still want to get some good benchmark utilities.

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The worth of your opinion is in direct proportion to the number of people who have asked for it
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February 27, 2001 11:35:00 PM

I currently run an IDE RAID0 with 3 drives

Benchmark Breakdown
Buffered Read 79 MB/s
Sequential Read 72 MB/s
Random Read 4020 kB/s
Buffered Write 47 MB/s
Sequential Write 50 MB/s
Random Write 12 MB/s
Average Access Time 15 ms (estimated)

I ran sisoft sandra 2001 on W2k
I use maxtor 20 GB 7200 RPM ATA100 w/ Promise FastTrak 100
What version of Sisoft did you use and what IDE Drive/ Controller?
February 27, 2001 11:39:15 PM

I currently run an IDE RAID0 with 3 drives

Benchmark Breakdown FAT32
Buffered Read 79 MB/s
Sequential Read 72 MB/s
Random Read 4020 kB/s
Buffered Write 47 MB/s
Sequential Write 50 MB/s
Random Write 12 MB/s
Average Access Time 15 ms (estimated)


Benchmark Breakdown NTFS
Buffered Read 66 MB/s
Sequential Read 71 MB/s
Random Read 5 MB/s
Buffered Write 45 MB/s
Sequential Write 51 MB/s
Random Write 15 MB/s
Average Access Time 11 ms (estimated)

I ran sisoft sandra 2001 on W2k
I use maxtor 20 GB 7200 RPM ATA100 w/ Promise FastTrak 100
What version of Sisoft did you use and what IDE Drive/ Controller?
Which file format do you use?
!