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Please post your HDtune 2.55 results **SPREADSHEET UP, PLEASE RE-READ FIRST POST** - Page 44

post #431 of 917
Hey ACHILEE5 and Dennyb!

Hey guy's, if my wd320 scores 12.5ms. If i created a partition of 12GB, what would be the ms time? HD Tune does not see partitions so i would like an estimate off you guys if possible. Cheers.
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post #432 of 917
is it single or dual platter? with that low an access time, it's gotta be dual, since my 320GB single platters get ~16ms

my 320's short stroked to 10gb on each in RAID0 gave me ~9ms, so your's would probably be even lower, ~7ms I'd say
    
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post #433 of 917
My hdd is single platter non raid. 7ms sounds great! Thanks for the info. One more questions guys and i will leave for good lol. If i create a partition for every game i have, will they all run at this access speed or does it not work this way?
Edited by BradleyW - 12/13/09 at 3:41pm
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post #434 of 917
that's just too much work, and there's no real benefit

the access time gets worse the more hard drive you use, since it's only that fast on the outer edge...as you get into the middle, it goes way up

I say you only need 2 partitions, maybe 3

1 for OS, 2nd for games, 3rd for other program/files
    
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post #435 of 917
Quote:
Originally Posted by Bazmecc View Post
the access time gets worse the more hard drive you use, since it's only that fast on the outer edge...as you get into the middle, it goes way up
Not quite true. The reason hard drives get slower as they get full is because they can no longer keep writing files sequentially, and they will have to jump around the platters like crazy to read anything. If each game is in it's own partition then that at least makes sure that all the data for that game is kept together no matter what happens.
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post #436 of 917
maybe I worded that wrong

looking at HDTune, the access times are low at the beginning (0%) of the drive and high at the end (100%)

I don't think HDTune cares if there's anything on the drive, access times are low on the outer edge, high on the inner edge

that's how I understood that anyways
    
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post #437 of 917
Quote:
Originally Posted by Bazmecc View Post
maybe I worded that wrong

looking at HDTune, the access times are low at the beginning (0%) of the drive and high at the end (100%)

I don't think HDTune cares if there's anything on the drive, access times are low on the outer edge, high on the inner edge

that's how I understood that anyways
That's because HDTune and other test programs measure access time from the beginning of the drive to random points on the platter and average out the results. The algorithm goes something like this:

- read sector 0
- generate random number X
- start timer
- read sector X
- stop timer
- loop the above
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post #438 of 917
I see...makes sense then...
    
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post #439 of 917
I should be more specific though:

The resulting IOPs do decrease near the end of the drive. IOPs are affected both by both the access time and sequential transfer speed (basically saying how many times can it complete a full operation each second), so when the sequential transfer speed decreases so do the IOPs.

However, this decrease isn't enough to drastically change loading speeds. Putting Windows on a partition at the end of the drive vs at the beginning would only add maybe 1-2s to the boot time, or maybe 1s extra to loading a level in a game. But using a full hard drive with one giant partition (that can't be defragmented anymore) can add a whole minute or two sometimes.

The rules change with certain server apps, but for desktop use it's nothing you need to worry about if you divide the partitions well (except for pure sequential access).
Edited by Manyak - 12/13/09 at 4:54pm
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post #440 of 917
I love my Caviar Black!

 
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