HDD issues.
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Re: HDD issues.
The firmware doesn't "scatter" any data. The OS determines where the data are written. AV drives incorporate the ATA Streaming feature set which allows the drive to skip difficult sectors whereas a typical desktop drive will become bogged down with error recovery. The philosophy is that AV applications can tolerate missed video frames or audio dropouts.-- Law of Expanding Memory: Applications Will Also Expand Until RAM Is FullComment
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Re: HDD issues.
The ROM does not decide where the data goes. No drive "scatters" data. The OS tells the drive to write to LBA n, and the drive then writes to LBA n. However, the drive has a "translator" which determines how the logical blocks are mapped to the drive's physical CHS addresses. Even so, the data are still laid down in serpentine fashion, in LBA order, except for the grown defects. Please read the Tracks and Zones article. It was written by a Seagate employee who is a highly regarded member of the data recovery community.-- Law of Expanding Memory: Applications Will Also Expand Until RAM Is FullComment
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Re: HDD issues.
I'm not aware of any modern file system that doesn't allow for fragmentation, but then I haven't looked much beyond Microsoft. In fact that last time I saw a file system that would only write files in contiguous space was in the 1980s.
PATA has a speed limit related to the selected UDMA mode whereas SATA can transfer data at a much faster rate, especially for SSDs. You would only use IDE compatibility mode for legacy OS-es or in the absence of a suitable SATA driver. For example, some HDD manufacturers' firmware updates are delivered via DOS based utilities which sometimes have trouble communicating in SATA mode.
As for glass platters, the data recovery guys often relate horror stories about shattered platters, or platters that have suffered a prolonged head crash, to the point that all the oxide has been scraped off and the platters have become transparent.
https://upload.wikimedia.org/wikiped...iled_Disks.png
http://www.nitroware.net/images/stor.../deskstar2.jpgComment
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Re: HDD issues.
I'm not aware of any modern file system that doesn't allow for fragmentation, but then I haven't looked much beyond Microsoft. In fact that last time I saw a file system that would only write files in contiguous space was in the 1980s.
PATA has a speed limit related to the selected UDMA mode whereas SATA can transfer data at a much faster rate, especially for SSDs. You would only use IDE compatibility mode for legacy OS-es or in the absence of a suitable SATA driver. For example, some HDD manufacturers' firmware updates are delivered via DOS based utilities which sometimes have trouble communicating in SATA mode.
As for glass platters, the data recovery guys often relate horror stories about shattered platters, or platters that have suffered a prolonged head crash, to the point that all the oxide has been scraped off and the platters have become transparent.
https://upload.wikimedia.org/wikiped...iled_Disks.png
http://www.nitroware.net/images/stor.../deskstar2.jpg
http://www.howtogeek.com/115229/htg-...defragmenting/
It's a little old, 2012 I think, but it's still valid. I'm not sure how the newer file systems in Linux deal with fragmentation, like Btrfs (B-Tree File System or Binary Tree File System).-- Law of Expanding Memory: Applications Will Also Expand Until RAM Is FullComment
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Re: HDD issues.
I split off the SSD discussion into this new thread:
https://www.badcaps.net/forum/showthread.php?t=49114"The one who says it cannot be done should never interrupt the one who is doing it."Comment
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Re: HDD issues.
Thank you.-- Law of Expanding Memory: Applications Will Also Expand Until RAM Is FullComment
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