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Please do not post questions about data recovery cases here (use this forum instead). This forum is for topics on finding new ways to recover data. Accessing firmware, writing programs, reading bits off the platter, recovering data from dust...HDD Performance Optimization
October 12th, 2015, 16:00
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.
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.
Re: HDD Performance Optimization
January 19th, 2016, 19:41
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!
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!
Re: HDD Performance Optimization
January 19th, 2016, 20:42
Somewhere near the outer edges of the disk is the fastest. And the sectors font really slow down unless there is a problem.
Re: HDD Performance Optimization
January 19th, 2016, 22:05
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