Short-Stroked Velociraptors [Access Times?] - Overclock.net

candy_van · 07-30-09

Just picked up a 300GB Velociraptor WD3000HLFS on the cheap (total impulse buy LOL), I was wondering what kind of access times were possible with 2x short stroked in RAID 0?

Not having SSD-speed pipe dreams here, just curious

ritchwell · 07-30-09

I have an access time of 6.8ms on my velociraptor raid. Been thinking of short stroking these drives, as of now i haven't gotten around of trying to do the procedure maybe when my window 7 disk comes on Oct. 22 i will delete my main Vista OS on the velociraptor and short stroke it.

candy_van · 07-30-09

DEEWWWW ITTT...and run benchmarks

PR1M3R · 07-30-09

Just throwing a guess based on some SS RAID's I have done, but if you went with a small Short Stroked partition, I think you could see in the 4.x range

candy_van · 07-30-09

Quote:

Originally Posted by PR1M3R

Just throwing a guess based on some SS RAID's I have done, but if you went with a small Short Stroked partition, I think you could see in the 4.x range

4ms range would be glorious

(chugging along at 16ms now). How small a partition you figure? I'd like to leave around 200+ GB or so for programs/games...sound reasonable?

the_beast · 07-30-09

I very much doubt you will get down to 4ms with such a large partition.

You would probably have to stick to ~50GB of space to get that low, if it is even possible with those drives. 5-5.5ms would be more likely.

Darren9 · 07-30-09

I only have the 150's but i'm just on 5ms with a 60GB volume.

candy_van · 07-30-09

OK, so would 6-7ms range be accurate if I wanted to keep say 100-150GB? Or would I basically be keeping access times stock with a volume that large?

**DuckieHo** · 07-30-09

Quote:

Originally Posted by the_beast

I very much doubt you will get down to 4ms with such a large partition.

You would probably have to stick to ~50GB of space to get that low, if it is even possible with those drives. 5-5.5ms would be more likely.

Hmmmm..... can't someone write a calulator? We know the average seek time.... we also know the rotation speed, the total data density, number of platters, and size of the platter.

Etra1n · 07-30-09

it may be wrong but essentially just apply a half-life rule to these scenarios. If you partitioned your disks at 150 GB you would cut the access time in half. If you did it again it would do the same result.

I'd say realistically it would prob be like 12 ms for 300 GB drives... 6-7 for 150 GB drives... around 5 for 75 GB and so on.

So not entirely half but close to that logic.

		Overclock.net - Overclocking.net > Components > Hard Drives & Storage
Short-Stroked Velociraptors [Access Times?]

07-30-09	#6 (permalink)
the_beast Mobo Master Join Date: Feb 2009 Location: London, UK Posts: 1,827 Rep: 233 Unique Rep: 171 Trader Rating: 0	I very much doubt you will get down to 4ms with such a large partition. You would probably have to stick to ~50GB of space to get that low, if it is even possible with those drives. 5-5.5ms would be more likely.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)