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 Post subject: HDD Performance Optimization
PostPosted: October 12th, 2015, 16:00 
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Joined: October 12th, 2015, 15:49
Posts: 1
Location: Earth
Hi,

One way to optimize the performance of IO operations is to defragment the files in the HDD.
And sometimea the sectors on the disk gets damaged and they should be marked as bad sector for them be avoided.

According to what I know, a sector's ability to hold data decreases over time, so the speed of reading data from it as well. So there is a condition in which the sector is not bad, but is in fact "low-performance". What I need to know is whether or not in the world of IT there is a name for the operation of moving data from low-performance sectors to higher-performance sectors.

I expect that since common file systems would usually use partitions sequentially from beginning to end, those sectors at the beginning of each partition in the HDD tend to be come low-performance earlier than those at the end of partitions. So shifting data forward in a partition would move it to higher-performance sectors resulting in better IO. :idea:


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 Post subject: Re: HDD Performance Optimization
PostPosted: January 19th, 2016, 19:41 
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Joined: March 14th, 2014, 11:06
Posts: 61
Location: EARTH
Not that trivial.

BIOS comes to play.
If you're so afraid to overuse the fastest disc centre (partition0), then it seems ok to install the OS to non-primary (partition1 or 2...), which are a bit slower.
Also, the FS type and cluster size do make a big difference, which should correspond to the most usual disk/partition use.
Not to mention the OS optimization and settings!
The last, but not the least--is partition setup e.g. via fsutil for NTFS or fstab/hdparm/tune2fs/sysctl.conf/zram etc for ReiserFS/XFS/Ext3/4.
And the swap!


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 Post subject: Re: HDD Performance Optimization
PostPosted: January 19th, 2016, 20:42 
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Joined: April 26th, 2012, 1:52
Posts: 388
Location: Chicago, USA
Somewhere near the outer edges of the disk is the fastest. And the sectors font really slow down unless there is a problem.

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On a clear disk you can seek forever.


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 Post subject: Re: HDD Performance Optimization
PostPosted: January 19th, 2016, 22:05 
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Joined: August 19th, 2007, 17:30
Posts: 1899
Location: In your hard drive.
http://www.pcworld.com/article/255224/h ... mance.html

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Buy your friends Toshiba\Hitachi and your enemies Seagate.


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