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PERC 5/i RAID Card: Tips and Benchmarks - Page 196

post #1951 of 7257
Quote:
Originally Posted by Manyak
Meh, those aren't that good, not worth the money you'd spend on them. The platter density is way too low, you'd be better off with giant 7200RPM drives instead.
but I don't need biiig space

here is link to some french forum ...
http://forum.hardware.fr/hfr/Hardwar...9.htm#t6677911

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post #1952 of 7257
scales pretty well
    
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post #1953 of 7257
more about this drive and PERC 6/i with my mobo

http://translate.google.com/translat...&sl=auto&tl=en
post #1954 of 7257
Quote:
Originally Posted by RobiNet View Post
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OMG... save your money bro. Are those really 10,000rpm?

7200.10 drives cream those with eyes closed.
Edited by USlatin - 4/1/09 at 2:07pm
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post #1955 of 7257
Quote:
Originally Posted by RobiNet View Post
but I don't need biiig space

here is link to some french forum ...
http://forum.hardware.fr/hfr/Hardwar...9.htm#t6677911

single


2x in raid 0 on dell perc 5/i
You misunderstand my point. Higher platter density = data gets bunched closer together = faster read speed + faster seek times. And average seek time is not a good representation of what you will get in real world applications. Average seek time = approximately 1/2 the time it takes for the head to go from the beginning of the drive to the end of it. But when you're actually reading a program it almost never has to move that far. So while a 7200RPM hard drive with a 12ms average seek time on 320GB platters might have to move the head a fraction of a mm, the 10kRPM drive with a 7ms seek time might have to move it a full mm. So in real world applications, the 7200 wins.


Honestly, if you're going to spend that amount of money just for an OS drive, you're better off getting one or two of Intel's SLC SSDs - 32GB, 250MB/s, 0.1ms seek, $400.
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post #1956 of 7257
The numbers say it all, 7200.10 drives are about 60% faster than those.
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post #1957 of 7257
Quote:
Originally Posted by USlatin View Post
The numbers say it all, 7200.10 drives are about 60% faster than those.
and the 7200.11 drives fail 60% more often

i kid, but not really. ugh. 7200.11

My 750GB 7200.10's are still running stong. vintage seagate ftw!
    
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post #1958 of 7257
Quote:
Originally Posted by DJZeratul View Post
and the 7200.11 drives fail 60% more often

i kid, but not really. ugh. 7200.11

My 750GB 7200.10's are still running stong. vintage seagate ftw!
lol too true the 7200.11's are a black mark for seagate. we still have yet to see about the 7200.12's though.
post #1959 of 7257
I've heard the term 'short throw' come up many times in this thread. What and how do you do it and is it worth it?

Is it like partitioning the first 20-30% of the drive and not use the rest?

We'll also have to see how the 7200.12's stack up. Recently brought a .12 500GB for a friend's build. Local store didn't have any WD640 Blue/Blacks in stock, after i've almost exclusivly brought WD's. The last Seagate i brought was a 320GB 7200.9 or so.
Edited by zha50 - 4/1/09 at 3:25pm
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post #1960 of 7257
Quote:
Originally Posted by Manyak
Honestly, if you're going to spend that amount of money just for an OS drive, you're better off getting one or two of Intel's SLC SSDs - 32GB, 250MB/s, 0.1ms seek, $400.
I've read in few places, that SSD aren't so fast in real world ...

my Vista 64bit + source code of my programs (I'm software developer) + example/test files from my clients - all takes 50-60GB - so when I'll have RAID 5 with 8x 36GB - I'll have 252GB total space - then 30% of front of each drive (10,8GB) give me 75,6GB partition - it should be fast enough with 512MB cache module

but after reading post #1929:

Quote:
Originally Posted by devsk
quick update: Got my 512Mb module from newegg. Works fine. But gains are questionable at best. Plain 'dd' tests with my RAID5 of 2x1TB and 1x750GB seagate 7200.11 drives:

Write: 156 MB/s vs. 150 MB/s
Read: 178 MB/s vs. 168 MB/s

Random read 4k in iozone: 2918KB/s vs. 2362KB/s
Random write 4k in iozone: 1550KB/s vs. 1533KB/s
... I'm not sure if I should care about bigger cache ... then PERC 6/i should be even better solution ... anybody know if PERC 6/i requires special battery or one from PERC 5/i should work fine ?

and about SATA drives - maybe bigger SATA drives should be faster, but how much - 30-40%? 90-100MB/s instead of 60MB/s ... but they will be more expensive - 2x-3x, heavier and bigger - 3.5" vs. 2.5", require more power ...
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