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Tom's Hardware > Forum > Storage > Hard Drives > To short stroke or not

To short stroke or not

Forum Storage : Hard Drives To short stroke or not

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Hello all,


I have 2 WD velociraptors 300g that I plan on raiding. My main boot drive is ssd 64gig. Storage will be a 1TB something.

I've noticed that at about 160g read point on HD tune performance starts a gentle decent towards lousy numbers. Before that point, hangs around the 120mb/s mark.

I was thinking of stroking it at 200g. This will still give 2/3 storage and cuts off before the numbers reach their lowest.

Any opinions would be helpful.

Thanx

Reply to LLJones
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What are the WD's going to be used for that you feel it worth "short-stroking" them? With your system driven by a SSD, you'll get little real world benefit for "secondary" drives... IMO

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Reply to tecmo34

The WD are to be used for system programs, office etc, and games. I want to limit the ssd to as few programs as possible, size dependent.

According to the graph, the wd are at 80 mb/s at the end, but at about 100 by 200g. This is why I was going to cut them off there. This also reflects hd tune findings.

I was thinking that it would keep the performance above 100mb/s at all times and still retain decent storage size.

It's just an idea I'm kicking around. Trying to squeeze a little more performance out of it, that's all.

I guess in reality, it would be more of a medium stroke than short. :)

Thanx for the fast response.

Reply to LLJones

Short stroking should also have an effect on random access times (less head travel distance) although I've never seen benchmarks. So you're still allowing 2/3 of the drive to be used.

Regular application load performance you probably won't get that much benefit from what you describe. It's already a velociraptor, and I assume you mean raid 0.

Reply to gtvr

RAID 0 is correct. I think I'll try a benching them in full configuration and then at 2/3. This won't happen for another couple of weeks, damn job keeps interfering with my life, but I'll post the results when I do. HDD storage is so cheap now, to loose a couple hundred gigs is not a problem.

Showing my age, I remember shelling out a couple of hundred more to get the optional 3.2 gig drive upgrade vs the stock 2.2 or something. This is a great time to be building computers for low cost. I still have a soft spot for 5 1/4 floppies though.

I have to rip my build apart to fix a NB cooling problem with my MB. That's when I'll
install the ssd, upgrade to W7 etc.

Thank you all for the help. It is appreciated.

Reply to LLJones

About a year ago I tried short stroking a pair of WD blacks (Think it was the 640s). It did provide a nice boost (No where near an SSD). It cut the access time from 12.5 mSec to about 9.5 mSec.

Reply to RetiredChief
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