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тАО10-01-2009 10:32 PM
тАО10-01-2009 10:32 PM
I want to make sure that my O.S. and swap end up on the outside (fast part) of the hard drive. Are partitions created from the outside to inside on the other way around?
Solved! Go to Solution.
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тАО10-01-2009 10:41 PM
тАО10-01-2009 10:41 PM
SolutionThe faster part of the drive is at the beginning - sector 0, where the first partition starts usually.
So put swap as first partition and you'll be fine, but don't expect superb performance because of this (if it starts swapping).
Regards,
Goran
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тАО10-01-2009 11:58 PM
тАО10-01-2009 11:58 PM
Re: HD Partitioning
/dev/sda1 * 1 8 64228+ 83 Linux
/dev/sda2 9 72918 585649575 8e Linux LVM
/dev/sda1 is used for /boot.The partition (/dev/sda2) is in LVM control and We use / on lvol1 and swap on lvol2 .
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тАО10-02-2009 12:33 AM
тАО10-02-2009 12:33 AM
Re: HD Partitioning
Ik have a dedicated disk for swap so I just create a "small" first partition for the swap area and use the rest of disk to store data that hardly never accessed. I sure don't expect miracles but every bit helps.
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тАО10-05-2009 01:24 AM
тАО10-05-2009 01:24 AM
Re: HD Partitioning
Can I assume this works in a simmilar way.
So if I want a really fast disk(partition) I would only use the first 10% of a raid 10 set.
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тАО10-05-2009 03:27 AM
тАО10-05-2009 03:27 AM
Re: HD Partitioning
Before expending too much effort to building RAID sets, make a simple test:
Create three partitions. The first partition should take the first 10 % of the disk, the second 80 %, and the last should take the last 10%.
(The second partition is not important: it was created only to force the third partition to the very end of the disk.)
For a quick test, run "hdparm -t /dev/
For a more accurate test, use bonnie (available in many Linux distributions, but often as an optional package only).
You could do a similar test for RAID sets too.
If you find that the "fast" part is at least 2x as fast as the "slow" part, there might be some real benefit; but if the difference is more like 1.05x (as I'd expect), the benefit would not be worth any significant effort.
If you really need a fast disk so much that you can afford to build RAID 10 sets and then use only the top 10% of them, you should be using your money to buy more RAM and/or Solid-State Drives instead.
MK
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тАО10-05-2009 03:48 AM
тАО10-05-2009 03:48 AM
Re: HD Partitioning
Anyway I got this hardware and I want to make sure that I put it to good use. I just want to establish some good practice guideline for myself.
I see if I can manage those tests, could be interesting. Is there a good live cd that supports bonnie? Must run on HP proliant DL380G5.
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тАО10-05-2009 04:54 AM
тАО10-05-2009 04:54 AM
Re: HD Partitioning
But reality is that this doesn't mean much when things get fragmented.
As for RAID - it depends on how you RAID stuff: if you create individual partitions and then RAID those, the same criterium applies.
Goran
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тАО10-05-2009 10:31 AM
тАО10-05-2009 10:31 AM
Re: HD Partitioning
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тАО10-05-2009 09:05 PM
тАО10-05-2009 09:05 PM
Re: HD Partitioning
Goran